Academic literature on the topic 'Micro-for-Nano'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Micro-for-Nano.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Micro-for-Nano"

1

Lee, Dong-Weon, and Il-Kwon Oh. "Micro/nano-heater integrated cantilevers for micro/nano-lithography applications." Microelectronic Engineering 84, no. 5-8 (May 2007): 1041–44. http://dx.doi.org/10.1016/j.mee.2007.01.104.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Namazu, Takahiro. "OS12-1 MEMS and Nanotechnology for Experimental Mechanics(invited,Mechanical properties of nano- and micro-materials-1,OS12 Mechanical properties of nano- and micro-materials,MICRO AND NANO MECHANICS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 183. http://dx.doi.org/10.1299/jsmeatem.2015.14.183.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Singh, Dolly, Deepti Singh, Sunmi Zo, and Sung Soo Han. "Nano-Biomimetics for Nano/Micro Tissue Regeneration." Journal of Biomedical Nanotechnology 10, no. 10 (October 1, 2014): 3141–61. http://dx.doi.org/10.1166/jbn.2014.1941.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ayatollahi, Majid R., and Behnam Saboori. "OS12-14 Experimental Study of Brittle Fracture for Epoxy/MWCNT Nano-Composites under Out-of-Plane Loading(Mechanical properties of nano- and micro-materials-4,OS12 Mechanical properties of nano- and micro-materials,MICRO AND NANO MECHANICS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 196. http://dx.doi.org/10.1299/jsmeatem.2015.14.196.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Squires, Todd M. "Micro-plumes for nano-velocimetry." Journal of Fluid Mechanics 832 (October 26, 2017): 1–4. http://dx.doi.org/10.1017/jfm.2017.688.

Full text
Abstract:
Fluid flows through nano-scale channels depend sensitively on the physical and chemical properties of the walls that surround them. The sub-micron dimensions of such channels, however, are impossible to resolve optically, which rules out most methods for flow visualization. Classic calculations by Squire (Q. J. Mech. Appl. Maths, vol. IV, 1951, pp. 321–329) and Landau & Lifshitz (Fluid Mechanics, vol. 6, 1959, Pergamon) showed that the laminar flow driven outside a capillary, by fluid emerging from the end of the capillary, is identical to the flow driven by a point force proportional to the average velocity in the capillary. Secchi et al. (J. Fluid Mech. 826, R3) analyze the dispersion of a solute that is injected along with the fluid, whose concentration decays slowly with distance but with a strong angular dependence that encodes the intra-capillary velocity. Fluorescence micrographs of the concentration profile emerging from the nanocapillary can be related directly to the average fluid velocity within the nanocapillary. Beyond their remarkable capacity for nano-velocimetry, Landau–Squire plumes will likely appear throughout micro- and nano-fluidic systems.
APA, Harvard, Vancouver, ISO, and other styles
6

KURNIA, Willy, and Masahiko YOSHINO. "A19 Nano Plastic Forming-Coating-Roller Imprinting (NPF-CRI) Process for Rapid Fabrication Technique of Nano and Micro Structures(M4 processes and micro-manufacturing for science)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 285–88. http://dx.doi.org/10.1299/jsmelem.2009.5.285.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Gheorghe, Ion Gheorghe, Liliana Laura Badita, Adriana Cirstoiu, Simona Istriteanu, Veronica Despa, and Stergios Ganatsios. ""Mechatronics Galaxy" a New Concept for Developing Education in Engineering." Applied Mechanics and Materials 371 (August 2013): 754–58. http://dx.doi.org/10.4028/www.scientific.net/amm.371.754.

Full text
Abstract:
This paper initiates the launch and the integration of a new scientific concept: "Mechatronics Galaxy", a support of industrial research for European sustainable and strategic development. This new concept is based on achievement and development of evolutionary and integrative-synergistic concepts regarding micro-nanomechatronics engineering, micro-nanoelectronics engineering and micro-nanoIT engineering for: spatial, temporal and functional integration;intelligent adaptive behaviour based on perception, self-learning, self-diagnostics and systemic reconfiguration; adequate flexibility of software and hardware structures; predictive development of micro-nano-mechatronics structures and of the intelligent computerized applicability with high added value; simultaneous mix-integrative design of micro-nano-products, micro-nano-systems and micro-nano-technologies; a strategy of technological impact in economy, industry, society and education. Thus, the new concept "Mechatronics Galaxy" creates and develops micro-nano-mechatronics engineering, based on fundamental and applied techniques: micro-nano-mechatronics, micro-nano-robotics, micro-nano-integronics, micro-nano-sensoristics, micro-nano-actuators, micro-nano-processing and intelligent micro-nano-manufacturing.
APA, Harvard, Vancouver, ISO, and other styles
8

Nakata, Shinya, Yuma Kitada, Stefan Wagesreither, Alois Lugstein, Koji Sugano, and Yoshitada Isono. "OS12-2 Evaluation of Piezoresistivity for VLS-Grown Silicon Nanowires Under Enormous Elastic Strain(Mechanical properties of nano- and micro-materials-1,OS12 Mechanical properties of nano- and micro-materials,MICRO AND NANO MECHANICS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 184. http://dx.doi.org/10.1299/jsmeatem.2015.14.184.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

OOHIRA, Fumikazu, and Takaaki SUZUKI. "PRE-K APPLICATIONS OF MICRO-NANO TECHNOLOGIES FOR OPTICAL AND BIOLOGICAL FIELDS(MM/Micro/Nano Precision Equipments I,Technical Program of Oral Presentations)." Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment : IIP/ISPS joint MIPE 2009 (2009): 195–200. http://dx.doi.org/10.1299/jsmemipe.2009.195.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Cao, Sheng Zhu, Xue Kang Chen, Gan Wu, Jian Ping Yang, and Rui Wang. "Micro Louvers for Micro and Nano-Satellites Thermal Control." Advanced Materials Research 317-319 (August 2011): 1658–61. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1658.

Full text
Abstract:
Micro and Nano-satellites with their low thermal capacitance are vulnerable to rapid temperature fluctuations. Therefore, thermal control becomes more important, but the limitations on mass and electrical power require new approaches. Possible solutions to actively vary the heat rejection of the satellite in response to variations in the thermal load and environmental condition are the use of variable emissivity devices, such as micro louvers, micro thermal switches, etc. Micro louvers with small volume, low weight, less power consumption and large emissivity variation, will be the more suitable solution for micro and Nano-satellites thermal control. In this paper, a polyimide based micro louver is developed. The device structure was designed, the actuation voltage was analyzed theoretically and fabrication process was described. The main parameters were tested and results were presented.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Micro-for-Nano"

1

Carmo, Cátia Vanessa Saldanha do Carmo. "Micro-and Nano-Technologies for Food Applications." Doctoral thesis, Universidade Nova de Lisboa. Instituto de Tecnologia Química e Biológica António Xavier, 2016. http://hdl.handle.net/10362/58238.

Full text
Abstract:
Dissertation presented to obtain the PhD degree in Chemistry-Nanotechnology
Nano- and microtechnology is one of the hottest topics in food science and technology. Current applications of nano- and microtechnology in the food sector includes the processing and formulation of food ingredients into nano- and micro- structures/-sized/-encapsulated or engineered particle additives. These systems have been incorporated in food to improve functionality, enhancing physical properties (i.e. colour, texture), protecting chemical ingredients from degradation (i.e antioxidants, flavour) and biological degradation (i.e. antimicrobials), and increasing bioavailability. Moreover, it has been used for the development of active/intelligent packaging, sensors and for encapsulation of bioactives, flavour and nutrients.(...)
N/A
APA, Harvard, Vancouver, ISO, and other styles
2

Berti, Francesca. "New micro-and nano-technologies for biosensor development." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4455.

Full text
Abstract:
Recent advances in micro- and nanotechnology have produced a number of new materials which exhibit exceptional potential for the design of novel sensing strategies and to enhance the analytical performance of biosensing systems. In this thesis three different types of miniaturisation pathways were investigated for electrochemical biosensing applications. Vertically aligned carbon nanotube thin films were designed and tested as platforms for DNA immobilisation and for the development of a model electrochemical genosensor. The sensor format involved the immobilisation of oligoucleotide probes onto the sensor surface, hybridisation with the target sequence and electrochemical detection of the duplex formation. By combining such an electrode platform with an enzyme labeling, a detection limit of oligonucleotide targets in the nanomolar range was achieved. A novel magnetic particle-based microfluidic sensor was also realised by integrating a microfluidic platform with a new analytical procedure based on the use of paramagnetic beads for the detection of real PCR samples. The hybridisation reaction was carried out on probe-modified beads in a flow-through format, thus enhancing the surface area-to-volume ratio and consequently the sensitivity. Moreover, the magnetic properties of the beads greatly facilitated the delivery and removal of reagents through the microfluidic channels. This format allowed the detection of nanomolar levels of double-stranded DNA sequences, with high reproducibility and fast time of analysis. Finally, polyaniline nanotubes arranged in an ordered structure directly on gold electrode surfaces were realised and employed to create a model molecularly imprinted (MIP) polymer -sensor for catechol detection. The advantages of using nanostructures in this particular biosensing application have been evaluated by comparing the analytical performance of the sensor with an analogous non-nanostructured MIP-sensor that we had previously developed. A significantly lower limit of detection (one order of magnitude) was achieved, thus demonstrating that the nanostructures enhanced the analytical performance of the sensor.
APA, Harvard, Vancouver, ISO, and other styles
3

Jiang, Kyle. "Advanced micro and nano fabrications for engineering applications." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/7052/.

Full text
Abstract:
This document is a compilation of my selected research publications in micro and nano fabrications. The papers are largely arranged in chronological order to show the development of research interests. The research works are grouped into three sections. Section one consists of 34 research papers on micro fabrication in various materials. The research was motivated by the development of a finger nail sized micro engine as explained in Papers 1 and 2. Section two of the document includes some research activities and achievements on nanocomposite materials embedded in metallic and ceramic matrices. Section 3 includes the papers to reflect the research in developing nanostructure fabrication processes. The research contained in this DSc submission shows a continuous exploration and development of novel micro/nano fabrication processes. Although the submission covers research activities spanning 15 years, from 2000 to 2015, many of the research results represent the top technology of the time. They have contributed to the ever progressing manufacturing capability of the world. The research has encompassed both theoretical and experimental studies, contributing to the understanding of the processes and materials involved.
APA, Harvard, Vancouver, ISO, and other styles
4

Yan, Jize. "Micro/nano-electro-mechanical resonators for signal processing." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613372.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Tang, Ying Kit. "A risk analysis methodology for micro/nano manufacturing." Thesis, University of Greenwich, 2012. http://gala.gre.ac.uk/8054/.

Full text
Abstract:
This research concerns the development of a risk analysis and mitigation methodology for assessing the impact of uncertainties and complexity of the design requirements arising in new process and product developments in micro and nano manufacturing. The risk analysis methodology integrates different computational approaches for process and product analysis, including the reduced order modelling using design of experiments, risk analysis using sampling-based and analytical methods and optimisation techniques. The integrated risk analysis and optimisation methodology is applied to two applications: (1) the FIB sputtering process control, and (2) a flip chip design. Three different FIB processes using different ion sources were investigated in order to evaluate their process performance with respects to different process parameter uncertainties. A critical comparison of the process capability against the specification limits of different processes was studied. As parts of the research, a new modified computational model is developed for a material sputtering process using focused ion beam (FIB). This model allows the analysis of micro- and nano-structures shape with the FIB machine controlled through multiple beam scans and different beam overlapping. The FIB model related studies also address the modelling requirements for including material re-deposition effects that occur during FIB milling. The model has been validated using an experimental test case. Good agreement is observed between the analytical shape using the model and the actual experiment. The validated model enhances the accuracy of the dwell time prediction. This approach overcomes the dependence of a trial-and-error approach of the process control in nano-manufacturing industry. The proposed methodology is also used to address a design problem of a flip chip design. A novel method for the evaluation of the environmental impact of the flip chip design in a multi-disciplinary optimisation problem is proposed. The goal is to address materials constraints due to environmental regulations and to handle different types of requirements such as the reliability and cost. An optimal flip chip design reliability function is identified. The approach allows electronics manufacturers to consider the environmental impact amongst different design alternatives at an early stage of the design of the product before any real prototyping in order to reduce the total manufacturing life cycle.
APA, Harvard, Vancouver, ISO, and other styles
6

Sandison, Mairi Elizabeth. "Micro- and nano-electrode arrays for electroanalytical sensing." Thesis, Connect to e-thesis, 2004. http://theses.gla.ac.uk/1025/.

Full text
Abstract:
Thesis (Ph.D.) - University of Glasgow, 2004.
Includes bibliographical references (p. 183-203). Print version also available. Mode of access : World Wide Web. System requirements : Adobe Acrobat reader required to view PDF document.
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Xue. ""Cage" Nano and Micro-particles for Biomedical Applications." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS316/document.

Full text
Abstract:
Les systèmes à délivrance de médicaments sont des technologies conçues pour administrer des molécules actives de façon optimisée afin d’améliorer leurs effets thérapeutiques tout en minimisant les effets secondaires. En effet, ces systèmes permettent une libération au niveau d’une cible thérapeutique. Les particules de type «cage» ont récemment attiré une attention particulière en raison de leur capacité accrue à (co)incorporer et à protéger des molécules actives vis-à-vis de dégradations in vivo. Les cyclodextrines (CDs) sont des exemples type de molécules "cage", possédant une cavité hydrophobe et une surface extérieure hydrophile. Nous avons élaboré tout d’abord des assemblages supramoléculaires à base de CDs d'environ 100 nm par une méthode douce consistant à mélanger deux solutions aqueuses de polymères neutres : 1) polymère de β-CD et 2) dextrane greffé avec la benzophénone, molécule invitée formant des complexes d’inclusion avec les CDs. La procédure de préparation « verte» en une seule étape rend la formulation attractive, malgré sa relativement faible capacité d’encapsulation (5%pds). Afin d'améliorer cete charge, nous avons élaboré des particules hybrides organiques-inorganiques (MOFs) à base de CDs. Avantageusement, les CD-MOF comportent non seulement des cavités de CD, mais aussi de larges pores engendrés lors l’auto-assemblage de CDs. Le lansoprazole a été incorporé avec succès (23%pds) dans les CD-MOFs et nous avons montré que chaque CDs était capable d’accueillir une molécule de principe actif. Cependant, l’inconvénient majeur des CD-MOFs est leur faible stabilité en milieu aqueux, limitant leur domaine d’application. Une modification de surface est apparue donc nécessaire pour améliorer leur stabilité. Notre stratégie a été d’incorporer les CD-MOFs dans des matrices d'acide polyacrylique (PAA). Des microsphères composites d’environ 650 nm ont été élaborées avec succès et ont permis une bonne stabilité et une libération prolongée sur plus de 48 h. Avantageusement, ces particules composites n’étaient pas toxiques in vitro même à des concentrations élevées. Ainsi, nous nous sommes orientés vers l’étude comparative de MOFs plus stables dans l’eau, à base de trimesate de fer. Les MIL-100 (Fe) (Material of Institute Lavoisier) figurent parmi les premiers MOF étudiés en tant que nanomédicaments (nanoMOFs). Ces particules, parfaitement stables dans l'eau, se dégradent dans des milieux contenant des phosphates en perdant rapidement leur caractère cristallin et leurs ligands constitutifs. De façon étonnante, nous avons constaté que malgré leur dégradation, ces MOFs conservent leur taille intacte. Une analyse approfondie basée sur la microscopie de Raman a permis d’obtenir des informations pertinentes sur la morphologie et la composition chimique de particules individuelles. Ainsi, il a été montré qu’un front d'érosion délimitait nettement un cœur intact et une coquillé inorganique érodée. Cependant, ni l’encapsulation ni la modification de surface des MOFs n’altérait leur intégrité. Enfin, nous avons étudié la co-encapsulation de deux molécules actives utilisées en combinaison (amoxicilline et clavulanate de potassium) dans les nanoMOFs stables à base de MIL-100 (Fe). Les antibiotiques ont été incorporées par imprégnation et chaque molécule s’est localisée préférentiellement dans un compartiment (large ou petite cage) corroborant parfaitement les simulations par modélisation moléculaire. De plus, il a été découvert, de manière surprenante, qu’un grand nombre de nanoMOFs se localisait au voisinage des bactéries (S.aureus) dans des cellules infectées. En se dégradant dans ces cellules, les nanoMOFs contenant les antibiotiques ont réduit de manière importante la charge bactérienne intracellulaire. Ces études révèlent le potentiel des particules de type «cage» pour une incorporation efficace de molécules actives et leur libération contrôlée et ouvrent de nombreuses possibilités d’application
Drug delivery systems are engineered technologies to administer pharmaceutical ingredients to improve their therapeutic effects, aiming at minimizing their side effects by means of targeted delivery and/or controlled release. “Cage” particles recently drew special attention since they could act as “drug containers” which potentially load large amount of drugs, improve their stability and offer the possibilities to co-encapsulate synergetic drugs. Cyclodextrins (CDs) are typical “cage” molecules with a hydrophobic cavity and a hydrophilic outer surface. Taking advantage of the host-guest interactions between β-CD and benzophenone (Bz), CD based nanoparticles (CD-NPs) were the first formulation investigated. CD-NPs of around 100 nm were instantaneously produced by mixing two aqueous solutions of neutral polymers: 1) poly-CD containing β-CDs, and 2) Bz grafted Dex (Dex-Bz). The “green” and facile preparation procedure makes it attractive formulation, whereas its limitation lies on the low drug payloads (~ 5 wt%). In order to improve the drug loading capacity of CDs, porous CD based metal organic frameworks (CD-MOFs) were synthesized, which contain not only CD cavities, but also large pores built up by CDs self-assembly. Lansoprazole (LPZ) was incorporated in CD-MOF microcrystals (~ 6 µm) reaching payloads as high as 23.2 ± 2.1% (wt). Remarkably, each CD cavity was able to host a drug molecule, offering new opportunities for the use of CD-MOFs for drug delivery purposes. However, these particles disassembled in aqueous media, which limits their application for oral and intravenous administration. Surface modification is therefore necessary to improve their stability in water. The drug loaded CD-MOF nanocrystals (~ 650 nm) were successfully embedded in polyacrylic acid (PAA) polymer matrices. The composite microspheres exhibited spherical shapes and sustained drug release over a prolonged period of time (over 48 h). Drug loaded MOF/PAA composite microspheres were not toxic in vitro (cell viability ~ 90%) even at very high concentrations up to 17.5 mg/mL. MOF/PAA composite microspheres constitute an efficient and pharmaceutically acceptable MOF-based carrier for sustained drug release. However, the process of surface modification was complicated and lead to larger particles and reduced drug payloads. Water-stable MOFs are a novel type of hybrid particles, showing a high potential as drug carriers. Iron trimesate MOFs, namely, MIL-100 (Fe) (MIL stands for Material of Institute Lavoisier) was among the first nano-scaled MOFs used for drug delivery. These particles were stable in water but degraded in phosphate buffer saline (PBS) losing their crystallinity and constitutive trimesate linkers. However, it was discovered that they kept their morphology intact. A thorough analysis based on Raman microscopy was carried on to gain insights on both the morphology and chemical composition of individual particles. It was evidenced the formation of a sharp erosion front during particle degradation. Noteworthy, the MOFs did not degrade during drug loading nor surface modification. Co-encapsulation of two synergic antibiotics (amoxicillin and potassium clavulanate) in MIL-100 (Fe) nanoMOFs was achieved following a “green” procedure by soaking nanoMOFs in aqueous solutions of both drugs. Molecular modelling showed that each drug preferentially located in a separate nanoMOF compartment. Surprisingly, nanoMOFs were prone to co-localize with bacteria once internalized in infected macrophages. NanoMOFs acted synergistically with the entrapped drugs to kill intracellular S. aureus, in vitro. These results pave the way towards the design of engineered nanocarriers in which each component synergistically plays a role in fighting the disease. These studies unravel the potential of “cage” particles for efficient drug entrapment and controlled release and open numerous possibilities for applications
APA, Harvard, Vancouver, ISO, and other styles
8

Zanchetta, Erika. "Innovative patternable materials for micro- and nano- fabrication." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423686.

Full text
Abstract:
The research activity of this thesis is focused on the development and optimization of new directly patternable organically modified TiO2, Al2O3 and ZrO2 based sol-gel materials whose peculiar characteristics and performances were optimized and exploited for the final specific application. In particular, the main strategy that lies at the basis of all the thesis work is the combination of top down and- bottom up approach for the final device realization. In fact, special attention has been set to materials design and synthesis (bottom up) and subsequently to the micro- and nano- fabrication of patterns on the corresponding film surface with different lithographic techniques (top down) in order to achieve the required properties, according to the final application. As it concerns the bottom up approach, the sol-gel has been assumed as the main synthetic method since, by mixing different organic-inorganic precursors, new materials with unique properties and microstructures can be created. In fact, by using organically modified precursors (such as trimethoxyphenylsilane, 3-glycidoxypropyltrimethoxysilane, 3-(Trimethoxysilyl)propyl methacrylate) or organic monomers it was possible to produce hybrid materials with the organic and inorganic components intimately mixed at a molecular scale, with the twofold effect of obtaining new properties and conferring them the patternability. Moreover, the addition of tetrafunctional precursors (Titanium isopropoxide, Zirconium butoxide, Aluminum-tri-sec-butoxide) allowed to increase the reticulation degree, taking part to the inorganic network formation, to improve the material mechanical properties (such as scratch, abrasion, plasma etching resistance) and to confer particular characteristics to the final materials, i.e. to modulate the refractive index. On the other hand, as it regards the top down approach, different lithographic techniques (photolithography, X-ray lithography, electron beam lithography and nanoimprint lithography) have been exploited in the realization of high refractive index patterns, high selective etching masks features, adaptive-optics devices and stamps for microinjection moulding directly with the synthesized materials. The structural and chemical changes induced inside the material by the interactions with the source used in the lithographic process have been deeply investigated in order to optimize both the synthesis of the best sol-gel systems and the final lithographic procedures. In conclusion the development of all the above mentioned advanced materials and innovative processing was pushed by the main target of improving, simplifying and decreasing costs and time of the overall micro- and nano- fabrication process in order to obtain better final features quality, with respect to traditional lithographic procedures.
L’attività di ricerca del presente lavoro di tesi è stata finalizzata allo sviluppo e all’ottimizzazione di nuovi materiali sol-gel a base di ossidi di TiO2, Al2O3 e ZrO2, organicamente modificati, per diverse applicazioni, sfruttando alcune delle loro caratteristiche peculiari e ottimizzandone le prestazioni. Nella fase iniziale del lavoro particolare attenzione è stata rivolta alla sintesi e all’ingegnerizzazione dei materiali stessi (approccio bottom up). Nella fase successiva i materiali sviluppati sono stati micro- e nano- strutturati mediante tecniche litografiche differenti (approccio top down) al fine di valorizzarne proprietà specifiche a seconda della particolare applicazione finale. La combinazione tra l’approccio top down e quello bottom up è stata dunque la principale strategia adottata al fine di raggiungere gli obiettivi prefissati. Per quanto riguarda l’approccio bottom up, la strategia di sintesi adottata è stata il metodo sol-gel. Infatti, l’utilizzo di precursori organico-inorganici permette di sintetizzare nuovi materiali con proprietà e microstrutture uniche. Utilizzando precursori organicamente modificati, come ad esempio trimetossifenilsilano, glicidossipropiltrimetossisilano, metacrilossipropiltrimtossisilano, è stato possibile infatti ottenere materiali ibridi avanzati le cui componenti, organica e inorganica, sono intimemente mescolate a livello molecolare. Inoltre, in fase di sintesi, possono essere aggiunti precursori tetra funzionali, tra cui Titanio isopropossido, Zirconio butossido, Alluminio-tri-sec-butossido, per: aumentare il grado di reticolazione, poiché partecipano alla formazione del network inorganico, con relativo incremento delle proprietà meccaniche del materiale (resistenza al graffio, all’abrasione, all’attacco con plasma), e conferire particolari caratteristiche al materiale finale, come ad esempio la modulazione dell’indice di rifrazione. I materiali così sintetizzati sono stati quindi direttamente micro- e nano- strutturati mediante tecniche litografiche differenti (fotolitografia, litografia a raggi X e a elettroni, litografia nanoimprint), approccio top down, al fine di ottenere pattern ad elevato indice di rifrazione, maschere per il silicio altamente selettive, dispositivi per ottica adattiva e stampi per micro-iniezione. Uno studio approfondito dell’interazione del materiale con le sorgenti utilizzate nei vari processi litografici ha permesso inoltre di ottimizzare sia la sintesi dei sistemi sol-gel stessi sia i parametri di processo litografico. Quindi, lo sviluppo e l’ottimizzazione contemporanei dei materiali avanzati e dei processi litografici innovativi appena citati hanno permesso di ridurre in termini di costi e tempo l’intero processo di micro- e nano- fabbricazione dei dispositivi finali realizzati, rispetto al processo litografico tradizionale, ottenendo strutture qualitativamente superiori.
APA, Harvard, Vancouver, ISO, and other styles
9

Serrà, i. Ramos Albert. "New electrochemical strategies for synthesising micro- and nano- structures." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/399918.

Full text
Abstract:
Nowadays, researchers have spent considerable effort on the development of new materials, with new properties and characteristics, and new methods of synthesis, in order to meet the demands of a market that is constantly evolving. In this sense, “New electrochemical strategies for synthesising micro- and nano-structures” proposes, generalizes and discusses the development of novel electrochemical methods, strategies or media to prepare different kinds of micro- and nanostructured materials. The leitmotiv could be focused on the possibility of preparing micro-patterned (Cu), nanoparticulated (Co, CoNi, CoPt), composited (CoPt-Ni), mesoporous (CoNi, CoPt, Pt, CoNi@Pt or CoNi@Au) or nanopowdered (CoPt) deposits with various shape (films, nanorods or nanowires) by using the proposed strategies (Electrochemical nano-Fabrication using Chemistry and Engineering (EnFACE) technology or classical/ionic liquid microemulsions as a soft electrodeposition templates) to obtain micro/nanomaterials for specific magnetic, catalytic or biomedical applications. The present thesis is organized in eight chapters, in which several published scientific papers in international journals with our original results have been included in order to discuss and analyze our work. The first one introduces the electrodeposition (Chapter 1) – history, theoretical fundaments, advantages and disadvantages and introduce the state-of-the-art of electrochemical micro- and nano-fabrication –, which is fundamental in order to understand our work. The aims and the experimental details of our research are presented and detailed in chapter 2 and chapter 3, respectively. It is important emphasize that “New electrochemical strategies for synthesising micro- and nano-structures” could be grouped into three main areas, according the aims introduced above: (a) The optimization of EnFACE technology as an alternative method to classical masked-electrodeposition to prepare metallic microstructures on large conductive substrates, with the final objective of proposing this technology as a scalable, economic and environmentally-friendly synthesis approach to microfabrication; this could be relevant in the electronics and sensors industries. This work is presented in chapter 4; (b) Proposing, discussing and analyzing the use of different types of classical microemulsions as new electrochemical media for synthesising nanostructures — that is, a new shape-controlled electrodeposition approach based on the use of soft-template systems. In this sense, the possibility of obtaining different types of Co-based structures with varied geometries and shapes as a function of the microemulsions conditions has been demonstrated. However, the low or moderate deposition rates and efficiencies leading us to explore and propose the use of alternative (water-in-ionic liquid) microemulsions as soft-template electrochemical media with improved conductivity and low environmental impact for shape-controlled electrodeposition. These electrodeposition media were tested to prepare magnetic nanostructured materials (nanoparticulated CoPt magnetic films or CoPt-Ni composites) with controlled size, composition and magnetism. Based on our results, the use of water –in-ionic liquid (W/IL) microemulsions have been revealed to be a versatile, green, simple and inexpensive approach to 1) synthesizing nanoparticles with controlled size and composition, and therefore magnetic behavior, by controlling the droplet size and aqueous solution concentration respectively, or 2) developing layers of composites using a one-step procedure, in which simultaneous electrodeposition from aqueous droplets and continuous ionic liquid components could take place. This work is presented in chapter 5; (c) Proposing, generalizing and discussing new electrochemical strategies (electrodeposition in water-in-ionic liquid, bicontinuous and ionic liquid-in-water microemulsions) for synthesising mesoporous nanomaterials ((Pt, CoPt, CoNi, CoNi @Au or CoNi@Pt) for catalysis (the electrooxidation of methanol or ethanol in order to propose competitive electrocatalysts with poor- Pt content for fuel cell reactions) or drug delivery with enhanced therapeutic effect as a consequence of their magnetic stimulation. This results are presented in chapter 6. Lastly, to complete the thesis, the main conclusions obtained are collected in chapter 7, while a summary of the thesis in Catalan language is given in chapter 8.
En aquesta tesi s’estudien i proposen noves estratègies de síntesi de micro- i nano-estructures metàl·liques amb potencials aplicacions en els camps de l’electrònica, catàlisi i alliberament de fàrmacs. El leitmotiv de la tesi serien (a) l’optimització de la preparació de micro-estructures de coure sobre grans àrees superficials, mitjançant la tecnologia EnFACE (Electrochemical nano-Fabrication using Chemistry and Engineering); demostrar, analitzar i generalitzar la viabilitat d’utilitzar (b) microemulsions clàssiques i (c) microemulsions base líquid iònic, com a plantilles toves, per a la síntesi diferents tipus de nano-estructures magnètiques (nanopartícules, compòsits, materials mesoporosos), permetent modular-ne les seves propietats, forma i característiques; i finalment (d) testar l’ús de les nano-estructures mesoporoses com a electro-catalitzadors per l’oxidació d’alcohols o vehicles intel·ligents per a l’alliberament de fàrmacs en medis cel·lulars. La tesi s’estructura en vuit capítols i inclou diverses publicacions en revistes científiques. En el primer capítol s’introdueix breument l’estat de l’art de l’electrodeposició de micro- i nano-materials, així com una breu ressenya històrica i els fonaments imprescindibles per a la comprensió del treball. El capítol 2 introdueix els objectius, mentre que en el capítol 3 es descriuen i detallen les condicions experimentals i equips emprats per a la síntesi, caracterització i aplicació dels materials fabricats. El capítol 4 es focalitza en la micro-fabricació fent una breu introducció a l’estat de l’art, així com discutir i optimitzar l’ús de la tecnologia EnFACE per a la micro-fabricació d’estructures de coure sobre substrats de grans dimensions. El capítol 5 es centra en la discussió i anàlisi de la viabilitat de l’ús de microemulsions clàssiques i base líquid-iònic per a l’electrodeposició amb forma controlada, basada en l’ús de plantilles toves. Finalment, el capítol 6 explora i estableix unes condicions de síntesi de nano-fils mesoporosos de diferents materials (base Co i Pt) per a la preparació d’electro-catalitzadors amb grans àrees superficials i alta activitat catalítica per a l’oxidació d’alcohols així com el seu ús com a vehicles dosificadors de fàrmacs. Finalment, el capítol 7 resumeix les conclusions de la tesi i el 8 presenta un resum en català.
APA, Harvard, Vancouver, ISO, and other styles
10

Perre, Emilie. "Nano-structured 3D Electrodes for Li-ion Micro-batteries." Doctoral thesis, Uppsala universitet, Institutionen för materialkemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-119485.

Full text
Abstract:
A new challenging application for Li-ion battery has arisen from the rapid development of micro-electronics. Powering Micro-ElectroMechanical Systems (MEMS) such as autonomous smart-dust nodes using conventional Li-ion batteries is not possible. It is not only new batteries based on new materials but there is also a need of modifying the actual battery design. In this context, the conception of 3D nano-architectured Li-ion batteries is explored. There are several micro-battery concepts that are studied; however in this thesis, the focus is concentrated on one particular architecture that can be described as the successive deposition of battery components (active material, electrolyte, active material) on free-standing arrays of nano-sized columns of a current collector. After a brief introduction about Li-ion batteries and 3D micro-batteries, the electrodeposition of Al through an alumina template using an ionic liquid electrolyte to form free-standing columns of Al current collector is described. The crucial deposition parameters influencing the nucleation and growth of the Al nano-rods are discussed. The deposition of active electrode material on the nano-structured current collector columns is described for 2 distinct active materials deposited using different techniques. Deposition of TiO2 using Atomic Layer Deposition (ALD) as active material on top of the nano-structured Al is also presented. The obtained deposits present high uniformity and high covering of the specific surface of the current collector. When cycled versus lithium and compared to planar electrodes, an increase of the capacity was proven to be directly proportional to the specific area gained from shifting from a 2D to a 3D construction. Cu2Sb 3D electrodes were prepared by the electrodeposition of Sb onto a nano-structured Cu current collector followed by an annealing step forcing the alloying between the current collector and Sb. The volume expansion observed during Sb alloying with Li is buffered by the Cu matrix and thus the electrode stability is greatly enhanced (from only 20 cycles to more than 120 cycles). Finally, the deposition of a hybrid polymer electrolyte onto the developed 3D electrodes is presented. Even though the deposition is not conformal and that issues of capacity fading need to be addressed, preliminary results attest that it is possible to cycle the obtained 3D electrode-electrolyte versus lithium without the appearance of short-circuits.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Micro-for-Nano"

1

Parameswaranpillai, Jyotishkumar, Nisa V. Salim, Harikrishnan Pulikkalparambil, Sanjay Mavinkere Rangappa, and Ing habil Suchart Siengchin, eds. Micro- and Nano-containers for Smart Applications. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8146-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Collins, Michael W., and Carola S. Koenig, eds. Micro and Nano Flow Systems for Bioanalysis. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4376-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Collins, Michael W. Micro and Nano Flow Systems for Bioanalysis. New York, NY: Springer New York, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Singh, Satya Bir, Prabhat Ranjan, and A. K. Haghi. Materials Modeling for Macro to Micro/Nano Scale Systems. Boca Raton: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003180524.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Li, Bingbing, and Tifeng Jiao, eds. Nano/Micro-Structured Materials for Energy and Biomedical Applications. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7787-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Guo, Yi, ed. Selected Topics in Micro/Nano-robotics for Biomedical Applications. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-8411-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Guo, Yi. Selected Topics in Micro/Nano-robotics for Biomedical Applications. New York, NY: Springer New York, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Micro and nano techniques for the handling of biological samples. Boca Raton: Taylor & Francis, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gusev, Evgeni, Eric Garfunkel, and Arthur Dideikin, eds. Advanced Materials and Technologies for Micro/Nano-Devices, Sensors and Actuators. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-3807-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

L, Garfunkel Eric, Dideikin Arthur, and SpringerLink (Online service), eds. Advanced Materials and Technologies for Micro/Nano-Devices, Sensors and Actuators. Dordrecht: Springer Science+Business Media B.V., 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Micro-for-Nano"

1

Gao, Wei, Kang-Won Lee, Young-Jin Noh, Yoshikazu Arai, and Yuki Shimizu. "In-Process Micro/Nano Measurement for Micro Cutting." In Micro-Cutting, 315–44. Chichester, UK: John Wiley & Sons Ltd, 2013. http://dx.doi.org/10.1002/9781118536605.ch11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cortés, Pilar, Mary Cano-Sarabia, Joan Colom, Jennifer Otero, Daniel Maspoch, and Montserrat Llagostera. "Nano/Micro Formulations for Bacteriophage Delivery." In Methods in Molecular Biology, 271–83. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7395-8_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Martins, Albino, Rui L. Reis, and Nuno M. Neves. "Micro/Nano Scaffolds for Osteochondral Tissue Engineering." In Osteochondral Tissue Engineering, 125–39. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76711-6_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Vernerey, Franck J., Wing Kam Liu, Elisa Budyn, Ji Hoon Kim, and Albert To. "Multiresolution Mechanics for Nano/Micro-Structured Materials." In Computational Mechanics, 1–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75999-7_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Tu, Jiawei, Hao Wan, and Ping Wang. "Micro/Nano Electrochemical Sensors for Ion Sensing." In Micro/Nano Cell and Molecular Sensors, 187–227. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1658-5_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Stenmark, L., and F. Bruhn. "Micro/Nano-Technologies for High Performance Spacecraft." In Smaller Satellites: Bigger Business?, 411–12. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-3008-2_60.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pang, Wei, Menglun Zhang, and Ji Liang. "Piezoelectric Micro/Nano Mechanical Devices for Frequency Control and Chemical Sensing." In Micro/Nano Technologies, 817–46. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-5945-2_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lima, Rui, Takuji Ishikawa, Yohsuke Imai, and Takami Yamaguchi. "Confocal Micro-PIV/PTV Measurements of the Blood Flow in Micro-channels." In Micro and Nano Flow Systems for Bioanalysis, 131–51. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4376-6_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Quintero-Borregales, Lucía M., Silvia Goyanes, and Lucía Famá. "Containers for Encapsulation of Aroma/Flavour for Food Applications." In Micro- and Nano-containers for Smart Applications, 359–92. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8146-2_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bhatt, Latika, Ruchi Kholiya, and Srishti Tewari. "Containers for Encapsulation of Fragrances/Aroma/Odour for Textile Applications." In Micro- and Nano-containers for Smart Applications, 155–78. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8146-2_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Micro-for-Nano"

1

Janson, Siegfried. "Micro/Nanotechnology for Micro/Nano/Picosatellites." In AIAA Space 2003 Conference & Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-6269.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Yi-Shiuan Wu, Fan-Gang Tseng, Chuen-Hung Tsai, and Ching-Chang Chieng. "Micro and nano structured reaction device for micro DMFC." In 2008 3rd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2008. http://dx.doi.org/10.1109/nems.2008.4484449.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Montanarella, Federico, Atul Sontakke, Vasilii Khanin, Anne Berends, Valerio Favale, Mohamed Tachikirt, Mike Krames, and Marie Anne van de Haar. "Nano-Engineered Phosphors for (Micro)LEDs." In International Conference on Emerging Light Emitting Materials. València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2022. http://dx.doi.org/10.29363/nanoge.emlem.2022.003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kuang-Chao Fan, Yejin Chen, and Weili Wang. "Probe technologies for micro/nano measurements." In 2007 7th IEEE Conference on Nanotechnology (IEEE-NANO). IEEE, 2007. http://dx.doi.org/10.1109/nano.2007.4601349.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Fatikow, S., V. Eichhorn, A. Sill, A. Steinecker, C. Meyer, L. Occhupinti, S. Fahlbusch, et al. "NanoHand: micro/nano system for automatic handling of nano-objects." In International Symposium on Optomechatronic Technologies, edited by Lixin Dong, Yoshitada Katagiri, Eiji Higurashi, Hiroshi Toshiyoshi, and Yves-Alain Peter. SPIE, 2007. http://dx.doi.org/10.1117/12.754400.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Lungui Zheng, Zheng You, Gaofei Zhang, and Qingqing Song. "Design of micro momentum wheel controller for micro-nano satellite." In 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC). IEEE, 2011. http://dx.doi.org/10.1109/aimsec.2011.6010991.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Torabi, Mohsen, Xiang Zhou, and Kaili Zhang. "Thermoelastic analysis for freestanding micro-hotplates for micro/nano gas sensors." In 2013 IEEE 13th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2013. http://dx.doi.org/10.1109/nano.2013.6720814.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Okuda, Keisuke, Naoyuki Niimi, Hiroaki Kawata, and Yoshihiko Hirai. "Hybrid nanoimprint for micro-nano mixture structure." In European Mask and Lithography Conf 2007. SPIE, 2007. http://dx.doi.org/10.1117/12.736928.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Zheng, Si-Yang. "Develop Micro/Nano Technologies for Cancer Diagnosis." In 2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2021. http://dx.doi.org/10.1109/mems51782.2021.9375338.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Guo, Hang, Hui Li, Amit Lal, and James Blanchard. "Nuclear microbatteries for micro and nano Devices." In 2008 9th International Conference on Solid-State and Integrated-Circuit Technology (ICSICT). IEEE, 2008. http://dx.doi.org/10.1109/icsict.2008.4735068.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Micro-for-Nano"

1

Painter, Oskar, Kerry Vahala, Jeff Kimble, and Tobias Kippenberg. Micro-and Nano-Optomechanical Devices for Sensors, Oscillators, and Photonics. Fort Belvoir, VA: Defense Technical Information Center, October 2015. http://dx.doi.org/10.21236/ada622998.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

O'Connor, Charles J., Leszek Malkinski, and N. Babu. Nanoscale Engineering of Multiferroic Hybrid Composites for Micro- and Nano-scale Devices. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada568709.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kim, Whung W. Consolidation of Al2O3 Nano-Ceramic Powders for High Power Micro-Wave Window. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada474908.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Muhlstein, Christopher L. Micromechanics of Damage Accumulation in Micro- and Nano-Scale Laminates for Microelectromechanical Systems. Fort Belvoir, VA: Defense Technical Information Center, April 2009. http://dx.doi.org/10.21236/ada510313.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Kovalev, Valeri I. Nonlinear Optical Wave Equation for Micro- and Nano-Structured Media and Its Application. Fort Belvoir, VA: Defense Technical Information Center, March 2013. http://dx.doi.org/10.21236/ada582416.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kimball, Clyde, Nicholas Karonis, Laurence Lurio, Philippe Piot, Zhili Xiao, Andreas Glatz, Nicholas Pohlman, et al. Unique Methodologies for Nano/Micro Manufacturing Job Training Via Desktop Supercomputer Modeling and Simulation. Office of Scientific and Technical Information (OSTI), November 2012. http://dx.doi.org/10.2172/1055326.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

McClements, David. Bioactive Encapsulation for Military Food Applications: Request for Enhanced Nano and Micro Particle Fabrication and Characterization Facilities. Fort Belvoir, VA: Defense Technical Information Center, January 2016. http://dx.doi.org/10.21236/ad1008500.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Michael J. Sepaniak. Chemically Functionalized Arrays Comprising Micro and Nano-Electro-Mechanizal Systems for Reliable and Selective Characterization of Tank Waste. Office of Scientific and Technical Information (OSTI), October 2008. http://dx.doi.org/10.2172/944406.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Baral, Aniruddha, Jeffery Roesler, and Junryu Fu. Early-age Properties of High-volume Fly Ash Concrete Mixes for Pavement: Volume 2. Illinois Center for Transportation, September 2021. http://dx.doi.org/10.36501/0197-9191/21-031.

Full text
Abstract:
High-volume fly ash concrete (HVFAC) is more cost-efficient, sustainable, and durable than conventional concrete. This report presents a state-of-the-art review of HVFAC properties and different fly ash characterization methods. The main challenges identified for HVFAC for pavements are its early-age properties such as air entrainment, setting time, and strength gain, which are the focus of this research. Five fly ash sources in Illinois have been repeatedly characterized through x-ray diffraction, x-ray fluorescence, and laser diffraction over time. The fly ash oxide compositions from the same source but different quarterly samples were overall consistent with most variations observed in SO3 and MgO content. The minerals present in various fly ash sources were similar over multiple quarters, with the mineral content varying. The types of carbon present in the fly ash were also characterized through x-ray photoelectron spectroscopy, loss on ignition, and foam index tests. A new computer vision–based digital foam index test was developed to automatically capture and quantify a video of the foam layer for better operator and laboratory reliability. The heat of hydration and setting times of HVFAC mixes for different cement and fly ash sources as well as chemical admixtures were investigated using an isothermal calorimeter. Class C HVFAC mixes had a higher sulfate imbalance than Class F mixes. The addition of chemical admixtures (both PCE- and lignosulfonate-based) delayed the hydration, with the delay higher for the PCE-based admixture. Both micro- and nano-limestone replacement were successful in accelerating the setting times, with nano-limestone being more effective than micro-limestone. A field test section constructed of HVFAC showed the feasibility and importance of using the noncontact ultrasound device to measure the final setting time as well as determine the saw-cutting time. Moreover, field implementation of the maturity method based on wireless thermal sensors demonstrated its viability for early opening strength, and only a few sensors with pavement depth are needed to estimate the field maturity.
APA, Harvard, Vancouver, ISO, and other styles
10

R.W. Carpick and M.E. Plesha. Development and Integration of Single-Asperity Nanotribology Experiments & Nanoscale Interface Finite Element Modeling for Prediction and Control of Friction and Damage in Micro- and Nano-mechnical Systems. Office of Scientific and Technical Information (OSTI), March 2007. http://dx.doi.org/10.2172/922930.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography