Готові списки джерел за темами / Nanoparticle tags

Добірка наукової літератури з теми "Nanoparticle tags"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Nanoparticle tags"

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Gao, Zhiqiang, and Zichao Yang. "Detection of MicroRNAs Using Electrocatalytic Nanoparticle Tags." Analytical Chemistry 78, no. 5 (March 2006): 1470–77. http://dx.doi.org/10.1021/ac051726m.

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2

Yang, Chih-Tsung, Lin Wu, Ping Bai, and Benjamin Thierry. "Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags." Journal of Materials Chemistry C 4, no. 41 (2016): 9897–904. http://dx.doi.org/10.1039/c6tc03981b.

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3

He, Han, Lauri Sydänheimo, Johanna Virkki, and Leena Ukkonen. "Experimental Study on Inkjet-Printed Passive UHF RFID Tags on Versatile Paper-Based Substrates." International Journal of Antennas and Propagation 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/9265159.

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We present the possibilities and challenges of passive UHF RFID tag antennas manufactured by inkjet printing silver nanoparticle ink on versatile paper-based substrates. The most efficient manufacturing parameters, such as the pattern resolution, were determined and the optimal number of printed layers was evaluated for each substrate material. Next, inkjet-printed passive UHF RFID tags were fabricated on each substrate with the optimized parameters and number of layers. According to our measurements, the tags on different paper substrates showed peak read ranges of 4–6.5 meters and the tags on different cardboard substrates exhibited peak read ranges of 2–6 meters. Based on their wireless performance, these inkjet-printed paper-based passive UHF RFID tags are sufficient for many future wireless applications and comparable to tags fabricated on more traditional substrates, such as polyimide.
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4

Boca, Sanda, Dumitrita Rugina, Adela Pintea, Nicolae Leopold, and Simion Astilean. "Designing Gold Nanoparticle-Ensembles as Surface Enhanced Raman Scattering Tags inside Human Retinal Cells." Journal of Nanotechnology 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/961216.

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Apart from the traditional development of surface-enhanced raman scattering (SERS) substrates for ultrasensitive spectroscopic analysis, an increasing interest is given nowadays to the design of the so-called SERS nanotags which integrate multiple SERS applications into single plasmonic nanoparticles. The fabrication of SERS tags is still a challenging task due to the complicated fabrication process. Typically, SERS tags are hybrid nanoconstructs consisting in a unique plasmonic nanoobject encoded with specific reporter molecules and enveloped in a protective shell that provides both biocompatibility and targeting function. Herein, we produce effective SERS tags consisting in small aggregates of gold nanoparticles (mainly dimers and trimers) which are captured from solution and then transferred into cells to perform as individual plasmonic nanostructures. Actually the small aggregates formed under controlled conditions are stabilized in solution by interlocking into a polymeric envelope made of thiol-modified poly(ethylene) glycol (PEG-SH). No further encoding operation is necessary in our case since part of ascorbic acid used as reducing agent remains attached in the interparticle junctions, providing persistent and strong SERS signal when the fabricated tags are internalized by human retinal cells. Our studies demonstrate a promising potential of new SERS-active nanoparticles to serve as effective reporters for biomedical tracing and imaging.
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Liu, Guodong, Hong Wu, Alice Dohnalkova, and Yuehe Lin. "Apoferritin-Templated Synthesis of Encoded Metallic Phosphate Nanoparticle Tags." Analytical Chemistry 79, no. 15 (August 2007): 5614–19. http://dx.doi.org/10.1021/ac070086f.

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6

Huang, Chien Wen, Yao Wu Hao, James Nyagilo, Digant P. Dave, Li Feng Xu, and Xian Kai Sun. "Porous Hollow Gold Nanoparticles for Cancer SERS Imaging." Journal of Nano Research 10 (April 2010): 137–48. http://dx.doi.org/10.4028/www.scientific.net/jnanor.10.137.

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Surface enhanced Raman spectroscopy (SERS) is a promising molecular imaging modality capable of simultaneously detecting multiple molecular biomarkers. With the biocompatibility and functionalizability of Au, Au-nanoparticle based Raman tags possess the potential for in vivo SERS cancer biomarker detection. Here, we report the large scale synthesis of a new type of Au nanoparticles, Porous Hollow Au Nanoparticles (PHAuNPs), and demonstrate their potential application as SERS imaging tags. PHAuNPs feature a sub-20 nm porous shell and a 50 nm void core. Such unique morphology enables them to strongly absorb and scatter near infrared lights due to the surface plasmon resonant effect of Au. This makes them particularly suitable for in vivo applications, where NIR wavelengths are considered as a ‘clear window’ for deeper penetration of light. The construction and characterization of PHAuNP-based Raman nanotag, including attachment of Raman dye, pegylation and their stability, are described. Cytotoxicity of Raman nanotags are tested using the radioactive [3H]thymidine incorporation method. The results show that pegylated Raman nanotags are stable and non-toxic and can potentially be used for in vivo applications.
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Yang, Chih-Tsung, Lin Wu, Ping Bai, and Benjamin Thierry. "Correction: Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags." Journal of Materials Chemistry C 4, no. 44 (2016): 10562. http://dx.doi.org/10.1039/c6tc90191c.

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Анотація:
Correction for ‘Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags’ by Chih-Tsung Yang et al., J. Mater. Chem. C, 2016, 4, 9897–9904.
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Zolfigol, Mohamad Ali, Maliheh Safaiee, and Neda Bahrami-Nejad. "Correction: Dendrimeric magnetic nanoparticle cores with Co-phthalocyanine tags and their application in the synthesis of tetrahydrobenzo[b]pyran derivatives." New Journal of Chemistry 40, no. 9 (2016): 8158–60. http://dx.doi.org/10.1039/c6nj90033j.

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Анотація:
Correction for ‘Dendrimeric magnetic nanoparticle cores with Co-phthalocyanine tags and their application in the synthesis of tetrahydrobenzo[b]pyran derivatives’ by Mohamad Ali Zolfigol et al., New J. Chem., 2016, 40, 5071–5079.
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An, Xingda, Ayan Majumder, James McNeely, Jialing Yang, Taranee Puri, Zhiliang He, Taimeng Liang, John K. Snyder, John E. Straub, and Björn M. Reinhard. "Interfacial hydration determines orientational and functional dimorphism of sterol-derived Raman tags in lipid-coated nanoparticles." Proceedings of the National Academy of Sciences 118, no. 33 (August 13, 2021): e2105913118. http://dx.doi.org/10.1073/pnas.2105913118.

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Анотація:
Lipid-coated noble metal nanoparticles (L-NPs) combine the biomimetic surface properties of a self-assembled lipid membrane with the plasmonic properties of a nanoparticle (NP) core. In this work, we investigate derivatives of cholesterol, which can be found in high concentrations in biological membranes, and other terpenoids, as tunable, synthetic platforms to functionalize L-NPs. Side chains of different length and polarity, with a terminal alkyne group as Raman label, are introduced into cholesterol and betulin frameworks. The synthesized tags are shown to coexist in two conformations in the lipid layer of the L-NPs, identified as “head-out” and “head-in” orientations, whose relative ratio is determined by their interactions with the lipid–water hydrogen-bonding network. The orientational dimorphism of the tags introduces orthogonal functionalities into the NP surface for selective targeting and plasmon-enhanced Raman sensing, which is utilized for the identification and Raman imaging of epidermal growth factor receptor–overexpressing cancer cells.
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Tian, Zhiyuan, Jiangbo Yu, Changfeng Wu, Craig Szymanski, and Jason McNeill. "Amplified energy transfer in conjugated polymer nanoparticle tags and sensors." Nanoscale 2, no. 10 (2010): 1999. http://dx.doi.org/10.1039/c0nr00322k.

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Більше джерел

Дисертації з теми "Nanoparticle tags"

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Blank-Shim, Silvia Angela [Verfasser]. "Design of Affinity Tags for Bare Magnetic Nanoparticles / Silvia Angela Blank-Shim." München : Verlag Dr. Hut, 2018. http://d-nb.info/1162767553/34.

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Moutet, Pierre. "Assemblage dirigé de nanoparticules colloïdales par nanoxérographie : développement et application à la réalisation de marquages sécurisés." Thesis, Toulouse, INSA, 2014. http://www.theses.fr/2014ISAT0046/document.

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Анотація:
L’assemblage dirigé de nanoparticules colloïdales sur des surfaces est une étape clé pour l’étude et la caractérisation de leurs propriétés physiques, ainsi que pour l’élaboration de dispositifs fonctionnels les intégrant. Ces travaux de thèse portent sur le développement et l’utilisation d’une technique d’assemblage dirigé rapide, applicable à une large gamme de dispersions colloïdales : la nanoxérographie par microscopie à force atomique (AFM). Le protocole de nanoxérographie par AFM est composé de deux étapes : (i) l’injection de motifs de charges dans un matériau électret, suivie (ii) d’un développement dans une dispersion colloïdale permettant de piéger les nanoparticules en quelques secondes seulement sur les motifs de charges par interaction électrostatique. L’ajustement précis des différents leviers expérimentaux et l’utilisation de dispersions colloïdales synthétisées par voie chimique avec des caractéristiques finement contrôlées nous ont permis d’affiner notre compréhension des mécanismes régissant l’assemblage dirigé par nanoxérographie par AFM et de repousser les limites de cette technique sur trois points précis : les assemblages binaires, l’assemblage de nano-objets individuels et les assemblages multi-couches de nano-objets. Les résultats obtenus ont ensuite été mis à profit pour élaborer des étiquettes de marquage sécurisées micrométriques à base de nanocristaux luminescents de NaYF4 dopés avec des terres rares destinées à la lutte anti-contrefaçon et le traçage de produits
Directed assembly of colloidal nanoparticles is a fundamental step for observation and quantitative measurement of their physical properties, as well as using them for the conception and manufacturing of innovative functional devices. This research aim to enhance a technique used for fast directed assembly of a wide range of colloidal nanoparticles : atomic force microscopy (AFM) nanoxerography. This technique consists of two steps : (i) injection of charge patterns written on a thin layer of electret, followed by (ii) an immersion of the electret into the colloidal solution. This last step allows nearly instantaneous selective deposition of nanoparticles onto the charge patterns. Fine tuning of few experimental levers and chemical synthesis of customized nanoparticles solution with finely tuned physical properties has allowed us to further our understanding of the assembly obtained with AFM nanoxerography mechanics. Three previously known limitations of the technique have been lifted : binary assembly, single nanoparticle assembly and multilayered assembly. Results obtained have then been used to design and produce microtags out of rare-earth based photo-luminescent NaYF4 nanocrystals, with tremendous potential for product traceability and fight against counterfeiting
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3

Avvakumova, S. "GOLD NANOCONJUGATES: PREPARATION, CHARACTERISATION AND BIOLOGICAL APPLICATIONS." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/214975.

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This PhD thesis is dedicated to the preparation, characterisation and biological application of gold nanoconjugates. Gold nanoparticles are prepared by various modern preparation methods, and subsequently characterised by spectroscopic (UV-vis, ATR-FTIR, NMR), microscopic (TEM) techniques. The stability of the conjugates is evaluated both by using Zeta-potential studies and UV-vis. The nanoparticles are used in cellular uptake experiments using human glioblastoma cancer cells, and are found to possess a low cytotoxicity. The nanoparticles are found taken up by the cells and distributed in different cellular compartments.
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4

"Engineering recombinant antibodies for immunosensors: Incorporating peptide tags for gold nanoparticle binding and incorporating the 12F6 antibody in a lateral flow device for detection of uranium in groundwater." Tulane University, 2018.

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Анотація:
archives@tulane.edu
Groundwater contamination due to the presence of uranium is a subject of concern since chronic exposure to uranium can lead to health problems such as renal failure and cancer. Current standard methods for detection and quantification of uranium in groundwater require expensive instrumentation, laborious sample preparation processes and highly skilled labor to perform. Simple, portable immunosensors can reduce analysis times and costs. Immunosensors take advantage the ability of antibodies to recognize specific molecules. The antibody-antigen binding event can then be read using a quantifiable signal such as color. The success of immunosensors largely depends on the quality of the antibody. In this report, a single chain variable fragment antibody (scFv) was generated from the monoclonal antibody, 12F6 to be used for further studies and re-engineering. The 12F6 antibody binds hexavalent uranium complexed to the chelator, 2,9-dicarboxyl-1,10-phenanthroline (DCP). This scFv was re-engineered in attempt to improve stability as well as adjust it for possible application in a lateral flow device. The full length 12F6 was used to develop a paper-based lateral flow immunoassay device for the detection of uranium in groundwater. Gold nanoparticles were conjugated to the 12F6 antibody to be used as a label. Gold nanoparticles were chosen as a label for this immunoassay due to their biocompatibility and intense plasmonic effect. These immunosensors can be used for rapid testing of groundwater at sites of contamination. This assay could quantify uranium at concentrations below the maximum contaminant level (MCL) for drinking water, 30ppb, or 126nM, as stipulated by the U.S. Environmental Protection Agency (EPA) and the World Health Organization (WHO).
1
Grace A. Jairo
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5

Chakraborty, Krishnendu. "Multiplexing Nanoplasmonic Sensors." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5490.

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Complex biological samples such as serum contain thousands of proteins and other molecules spanning up to 13 orders of magnitude in concentration. Present measurement techniques such as protein microarrays and quantum dot FRET do not permit the analysis of all pair-wise interactions between the components of such a complex mixture to a given target molecule. In this thesis, we explore the use of nanoparticle tags which encode the identity of the molecule to obtain the statistical distribution of pair-wise interactions using their Localized Surface Plasmon Resonance (LSPR) signals. The encoding is done through choice of shape, size and material of the nanoparticles. Protein interactions produce plasmonic coupling between pairs of such particles which are well resolved in the scattering spectra. In this thesis, we analyze the multiplexing capacity of such an approach and compare it with a FRET based method. It is observed that multiplexing capacity is significantly higher for plasmonic coupling based method proposed in this thesis compared to the use of commonly available FRET pairs. One of the practical disadvantages of single nano-particle resolved plasmonic sensing is the low scattering intensity causing a deteriorated signal to noise ratio of detection. As part of this work, we investigated the effect of substrate on light scattering from the nanoparticle and showed that high reflectivity substrates with field reflection coefficients approaching unity result in nearly an order of magnitude enhancement of scattered light intensity. Going further on the practical realizations of plasmonic sensors, we analyzed Grating Coupled Surface Plasmon Resonance (GC-SPR) sensors based on commercially available DVD gratings using Rigorous Coupled Wave Analysis (RCWA) technique implemented in the numerical package R-Soft. We showed that by using a multi-layer dielectric coating the linewidth of the plasmonic response can be reduced by more than an order of magnitude, consequently enhancing the limit of detection of the DVD based sensor.
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6

Tian-HsinLin and 林天心. "Raman Tags Based on Stably Coupled Nanoparticles." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/95452907572791059010.

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Анотація:
碩士
國立成功大學
光電科學與工程學系
104
The core-satellite nanostructures are applied to enhance electric field in SERS (Surface enhanced Raman scattering) tags. The method using electrostatic induction to produce core-satellite nanostructures is offered in this research. This method is simpler than those using DNA. The stability of Raman signal and whether the signal can be quantitative analysed depends on the stability and dispersion of nanostructures. There are several methods for improving the stability and dispersion of nanostructures in this research. Also, the purification of core-satellite nanostructures are provided in this research. The Raman signal’s intensity of a SERS tag depends on the number of satellites per core. The more satellites it has, the stronger Raman signal’s intensity it has. In this research, several chemicals were experimented for improving the number of satellites per core. Furthermore, the dispersion of the core-satellite nanostructures was improved by adjusting the satellites concentration and the method of mixture. The core-satellite nanostructures would be destroyed by the change of environment. Therefore, the core-satellite nanostructures was coated by silica chell in this research. The factors which would influence the dispersion or stability of the nanostructures were discussed in this research. In addition, the Raman signal of the core-satellite nanostructures with silica shell was measured in this research. The Raman signal of the single core-satellite nanostructure was measured successfully which could be applied to quantitative analysis.
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WU, HUAI-CHANG, and 吳懷章. "Rapid Detection of Salmonella by Combination of SERS Tags and Magnetic Nanoparticles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/z2f3td.

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Анотація:
碩士
國立中正大學
化學暨生物化學研究所
105
Foodborne diseases caused by pathogenic bacteria such as Salmonella choleraesuis and Escherichia coli, are the focus of national food safety, no matter in developing countries or in developed countries. However, current detection methods, for instance, enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR), are time consuming. Therefore, the development of a rapid and accurate way to detect pathogenic bacteria is the national efforts in food safety goals. We have developed a novel surface-enhanced Raman scattering (SERS) tag, named nanoaggregate-embedded bead (NAEB), which is silica-coated, dye-induced aggregation of a small number of gold nanoparticles. The hot spot between gold nanoparticles in NAEBs enhance SERS signal and there is a protective layer composed of silicon dioxide that maintains its stability in different environments. In this work, NAEBs with specific Raman signals from different Raman reporters such as rhodamine 6G (R6G)、tetramethylrhodamine-5-isothiocyanate (TRITC)、ethyl violet (EV)、safranin O (SO)、nile blue (NB) have been successfully synthesized. Here, in addition of using NAEBs, we also use magnetic nanoparticles to capture Salmonella choleraesuis in solution. So we can more efficiently isolate and preconcentrate the bacteria in the solution by the magnetic nanoparticles and to detect the SERS signals. This method has the advantages of convenient operation, low cost, rapid detection, high accuracy and specific identification. Compared with conventional methods, the detection time of this method is short and also can be used to detect pathogenic bacteria qualitatively and quantitatively. A linear relationship between Raman signal and concentration of Salmonella choleraesuis in the concentration range from 10 CFU/mL to 10^5 CFU/mL has been achieved. Key words：SERS tag、Salmonella、magnetic nanoparticles
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LI, KUAN-YING, and 李冠瑩. "Rapid detection of multiple bacteria by SERS-based immunoassay using the combination of SERS tags and magnetic nanoparticles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/29f74e.

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Анотація:
碩士
國立中正大學
化學暨生物化學研究所
106
Rapid detection of multiple pathogens has increasingly been the object of study in recent years because of the globalization of infectious diseases. For the purpose of this research project we select Salmonella choleraesuis and Neisseria lactamica as the detection model for multiple pathogen detection. Currently, pathogenic bacteria are detected using conventional methods, which are complicated and time consuming. Therefore, development of simpler and faster detection methods for simultaneous detection of multiple pathogens are in demand. We have developed a novel surface-enhance Raman scattering (SERS) tag, named nanoaggregate-embedded bead (NAEB), which is based on Raman reporter-induced aggregation of spherical gold nanoparticles (AuNPs) and further covered by silica on the nanoaggregates. Additionally, the enhanced electromagnetic field in the hot spots of the NAEBs can induce strong SERS signals. Currently, we have prepared different Raman reporter-labeled NAEBs, each with a Raman reporter such as Tetramethylrhodamine-5-isothiocyanate (5-TRITC), Ethyl violet (EV), Safranin O, Methylene blue hydrate (MB), or Cresyl violet acetate (CV). We also use Concanavalin A (Con A) functionalized magnetic nanoparticles (Con-MNPs), which can bind with various bacteria. Thus, Con-MNPs capture both Salmonella choleraesuis and Neisseria lactamica in solution simultaneously to achieve rapid separation and preconcentration, while the two corresponding antibody-conjugated NAEBs recognize Salmonella choleraesuis and Neisseria lactamica, respectively, and the corresponding SERS signals can be detected. Preliminary results show that pathogenic bacteria can be detected qualitatively and quantitatively. Detection of both Salmonella choleraesuis and Neisseria lactamica in the concentration range from 10 CFU/mL to 10^6 CFU/mL has been achieved. Keywords:SERS tag、Salmonella choleraesuis、Neisseria lactamica、magnetic nanoparticles、bacteria
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Частини книг з теми "Nanoparticle tags"

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Wang, Zhiguo, and Baofeng Yang. "Electrocatalytic Nanoparticle Tags Technique for High-Sensitivity miRNA Expression Analysis." In MicroRNA Expression Detection Methods, 191–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04928-6_11.

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Fabris, Laura. "Noble Metal Nanoparticles as SERS Tags: Fundamentals and Biomedical Applications." In The World Scientific Encyclopedia of Nanomedicine and Bioengineering I, 67–101. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813202504_0003.

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Mukherjee, D. "ZnO for Probes in Diagnostics." In ZnO and Their Hybrid Nano-Structures, 202–33. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902394-7.

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Nanoparticles have revolutionized the field of diagnostics in recent years and ZnO nanoparticles (ZnO-NPs) have been one of the most commonly used ones. These easily synthesizable ZnO-NPs have a multitude of advantages over other metal-based nanoparticles owing to their biocompatibility, easy functionalization through their hydroxyl group-rich surface, and cost-effectiveness among several other benefits. Due to their inherent luminescence and fluorescent-tag functionalizing properties, ZnO-NPs have been useful as a probe in tumour and live cell bioimaging. ZnO-NPs have also been identified as probes in biosensors for the detection of various clinically important biochemical analytes like glucose and cholesterol, pathogens, drug molecules, and antibody-antigen based detection systems. In this chapter, several of the different applications of ZnO as probes in diagnostics will be dealt with in detail. Also, the characteristics of ZnO nanoparticles useful for such applications and the way these devices and techniques are developed will be explained.
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Rocha, Lizandra Viana Maurat da, Paulo Sergio Rangel Cruz da Silva, and Maria Inês Bruno Tavares. "Comparative Study Of Poly (Butylene Adipate Co-Terephthalate) Nanocomposites With Zinc And Molybdenum Oxides." In COLLECTION OF INTERNATIONAL TOPICS IN HEALTH SCIENCE- V1. Seven Editora, 2023. http://dx.doi.org/10.56238/colleinternhealthscienv1-122.

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studies on nanocomposites of biodegradable polymers such as polybutylene adipate co-terephthalate (PBAT) are justified. This polymer is certified for composting; it is printable, suitable for food contact, water resistant, and performs similarly to polyethylene[1, 2] . Metal oxide nanoparticles (NPs) such as MoO3 and ZnO are potential fillers to, in addition to improving mechanical properties, confer antimicrobial, anti-UV activity and modulate the biodegradability of polymer matrices such as that of PBAT[3, 4, 5] . The effects of different concentrations of ZnONPs were observed and compared to MoO3 NPs, whose relevant properties still lack further study. In this work, seven films prepared by casting with CHCl solvent evaporation were studied3 . The tags PBAT, Z1, Z3, Z5, M1, M3 and M5 correspond to the pure polymer samples and their combinations with 0.1; 0.3 and 0.5 % of zinc and molybdenum oxide NPs, by mass, respectively. The Fourier transform infrared spectroscopy (FTIR) ratified the total removal of the solvent and the maintenance of the bands of the main functional groups of the polymeric matrix, even after the incorporation of the NPS. In the thermogravimetric analysis (TGA), only one degradation event was observed for all samples; in M1 and especially in M3 the thermal resistance increased, while, with the addition of zinc oxide, especially in Z5 and Z3, this property was reduced. There was no expressive change in the degradation onset temperature (Tonset ) of M5 in relation to PBAT, suggesting that this concentration of MoO₃ cannot promote increment in the thermal property of this matrix. The X-ray diffraction (XRD) results of M1 and M3 suggested a better dispersion than M5, the only composite in which there was no increase in the degree of crystallinity in relation to pure PBAT, indicating possible agglomeration. In time domain nuclear magnetic resonance (TD-NMR) analysis, the curves of M3 present a narrower base, indicating greater homogeneity and especially good dispersion in this system, corroborating the other analyses. The reduced return time of the magnetization to the longitudinal axis (T1 H) of M5 and the increased molecular mobility of this system were associated with the crystalline rearrangement. When measuring the water activity (aw ) thinking in the application of these films as active packaging, Z3 and M1 stood out, with lower propensity to microbiological attack, and a linear trend (R² > 0.9) was observed for this property with the incorporation of molybdenum nanotrioxide in poly(butylene adipate co-terephthalate). The worst aw data were observed in Z1, with M3 and M5 being similar to Z5. Still, all observed aw values were below the recommended value for food packaging, 0.7 (the value at which susceptibility becomes most relevant). Thus, it was shown to be possible to incorporate zinc and molybdenum metal oxides in the PBAT matrix, via casting, with good distribution and better dispersion of fillers in the range of 0.3% by mass. Moreover, it was observed that different types and proportions of particles resulted in different effects on the microstructure of the matrix (thermal resistance, crystallinity, molecular mobility and water activity), without causing interaction capable of affecting the molecular composition of the material, at levels detectable by FTIR-ATR.
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Тези доповідей конференцій з теми "Nanoparticle tags"

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Ramkumar, A., and R. Lal. "Silica Nanoparticle Tags for Capacitive Affinity Sensors." In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1616395.

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Freeman, R. G., William E. Doering, Ian D. Walton, Sharron G. Penn, Glenn Davis, Frances Wong, and Michael J. Natan. "Detection of biomolecules using nanoparticle surface enhanced Raman scattering tags." In Biomedical Optics 2005, edited by Alexander N. Cartwright and Marek Osinski. SPIE, 2005. http://dx.doi.org/10.1117/12.591114.

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Li, Nantao, Taylor D. Canady, Yi Lu, Manish Kohli, Andrew M. Smith, and Brian T. Cunningham. "Digital Detection of microRNA with Nanoparticle Tags under Photonic Resonator Absorption Microscopy." In Optical Sensors. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/sensors.2020.sm4b.2.

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Qian, X. M., D. Ansari, and Shuming Nie. "A new class of nontoxic nanoparticle tags based on surface enhanced Raman scattering." In Biomedical Optics (BiOS) 2007, edited by Marek Osinski, Thomas M. Jovin, and Kenji Yamamoto. SPIE, 2007. http://dx.doi.org/10.1117/12.718459.

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Rizwan, Muhammad, Ajith Adhur Kutty, Lauri Sydanheimo, Leena Ukkonen, Johanna Virkki, Monageng Kgwadi, and Timothy D. Drysdale. "Characterization of nanoparticle inks on a novel polyester-based substrate for manufacturing of passive UHF RFID tags." In 2016 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2016. http://dx.doi.org/10.1109/aps.2016.7696177.

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Sipila, Erja, Jun Liu, Jianhua Wang, Johanna Virkki, Toni Bjorninen, Lianglun Cheng, Lauri Sydanheimo, and Leena Ukkonen. "Additive manufacturing of antennas from copper oxide nanoparticle ink: Toward low-cost RFID tags on paper- and textile-based platforms." In 2016 10th European Conference on Antennas and Propagation (EuCAP). IEEE, 2016. http://dx.doi.org/10.1109/eucap.2016.7481676.

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Sipila, Erja, Johanna Virkki, Lauri Sydanheimo, and Leena Ukkonen. "Effect of sintering method on the read range of brush-painted silver nanoparticle UHF RFID tags on wood and polyimide substrates." In 2014 IEEE International Conference on RFID-Technologies and Applications (RFID-TA). IEEE, 2014. http://dx.doi.org/10.1109/rfid-ta.2014.6934231.

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Salvador, María, José Luis Marqués-Fernández, José Carlos Martínez-García, Dino Fiorani, Florica Balanean, Vlad Socoliuc, Ladislau Vekas, Davide Peddis, and Montserrat Rivas. "Fatty-Acid Stabilized Magnetic Nanoparticles as Tags for Biodetection: Unravelling the Role of the Surfactant." In 2023 IEEE 23rd International Conference on Nanotechnology (NANO). IEEE, 2023. http://dx.doi.org/10.1109/nano58406.2023.10231254.

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Zhu, S. Sherry, Marta Antoniv, Martin Poitzsch, Nouf Aljabri, and Alberto Marsala. "NanoGram Detection of Drilling Fluids Additives for Uncertainty Reduction in Surface Logging." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204626-ms.

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Анотація:
Abstract Manual sampling rock cuttings off the shale shaker for lithology and petrophysical characterization is frequently performed during mud logging. Knowing the depth origin where the cuttings were generated is very important for correlating the cuttings to the petrophysical characterization of the formation. It is a challenge to accurately determine the depth origin of the cuttings, especially in horizontal sections and in coiled tubing drilling, where conventional logging while drilling is not accessible. Additionally, even in less challenging drilling conditions, many factors can contribute to an inaccurate assessment of the depth origin of the cuttings. Inaccuracies can be caused by variation of the annulus dimension used to determine the lag time (and thus the depth of the cuttings), by the shifting or scrambling of cuttings during their return trip back to the surface, and by the mislabelling of the cuttings during sampling. In this work, we report the synthesis and application of polystyrenic nanoparticles (NanoTags) in labeling cuttings for depth origin assessment. We have successfully tagged cuttings using two NanoTags during a drilling field test in a carbonate gas well and demonstrated nanogram detection capability of the tags via pyrolysis-GCMS using an internally developed workflow. The cuttings depth determined using our tags correlates well with the depth calculated by conventional mud logging techniques.
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Irene, Cappelli, Fort Ada, Mugnaini Marco, Panzardi Enza, Pozzebon Alessandro, Tani Marco, and Vignoli Valerio. "Battery-less HF RFID sensor tag for humidity measurements based on TiO2 nanoparticles." In 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2020. http://dx.doi.org/10.1109/i2mtc43012.2020.9129360.

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