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Artykuły w czasopismach na temat „Hybrid nanomechanics”

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Autor: Grafiati

Data publikacji: 27 lipca 2024

Data aktualizacji: 28 lipca 2024

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1

Jeng, Yeau Ren. "Development of Innovative Algorithm for Nanomechanics and its Applications to the Characterization of Materials". Key Engineering Materials 528 (listopad 2012): 165–96. http://dx.doi.org/10.4028/www.scientific.net/kem.528.165.

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Understanding major mechanisms affecting material strength such as grain size, grain orientation and dislocation mechanism from atomistic viewpoint can empower scientists and engineers with the capability to produce vastly strengthened materials. Computational studies can offer the possibility of carrying out simulations of material properties at both larger length scales and longer times than direct atomistic calculations. The study has conducted theoretical modeling and experimental testing to investigate nanoscale mechanisms related to material strength and interfacial performance. Various computational algorithms in nanomechanics including energy minimization, molecular dynamics and hybrid approaches that mix atomistic and continuum methods to bridge the length and time scales have been used to thoroughly study the deformation and strengthening mechanisms. Our study has also performed experiments including depth-sensing indentation technique andin-situpico-indentation to characterize the nanomechanisms related to material strength and tribological performance. In this project, we have developed the innovative mutil-scale algorithms in the area of nanomechanics. These approaches were used to studies the defect effect on the mechanical properties of thin film, mechanical properties of nanotubes, and tribological phenomena at nanoscale interfaces.

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2

Vijayaraghavan, V., i Liangchi Zhang. "Nanomechanics of single layer hybrid boron nitride–carbon nanosheets: A molecular dynamics study". Computational Materials Science 159 (marzec 2019): 376–84. http://dx.doi.org/10.1016/j.commatsci.2018.12.042.

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3

Lin, F., Y. Xiang i H. S. Shen. "Buckling of Graphene Embedded in Polymer Matrix Under Compression". International Journal of Structural Stability and Dynamics 15, nr 07 (31.08.2015): 1540016. http://dx.doi.org/10.1142/s0219455415400167.

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Understanding the mechanical behaviors of graphene under different stress states is crucial to their applications. Comparing with the bucking behavior of free standing graphene under compression, the monolayer graphene embedded in the polymer matrix has a higher critical buckling load and smaller atomic length scale wavelengths as well as buckling amplitudes. In this paper, the molecular dynamics (MD) method is adopted to study the buckling behaviors of embedded graphene under uniaxial compression. Two MD models are built, namely the hybrid MD/continuum nanomechanics model and the full MD model. Periodical boundary conditions are applied in the MD simulations. Graphene sheets with different aspect ratios are considered and it is observed that the critical buckling strain of graphene sheets embedded in polymer matrix is independent of their aspect ratios. The current simulation results match well with the reported experimental results. Furthermore, it is demonstrated that the current simulation method can produce clear buckling shapes, which are difficult to observe in nanoscale experiments.

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4

Wang, Wei-Wei, Yu Gu, Jun-Hao Wang, Zhao-Bin Chen, Xiao-Ting Yin, Qi-Hui Wu, Jia-Wei Yan i Bing-Wei Mao. "Probing Mechanical Properties of Solid-Electrolyte Interphases on Li Nuclei by In Situ AFM". Journal of The Electrochemical Society 169, nr 2 (1.02.2022): 020563. http://dx.doi.org/10.1149/1945-7111/ac53d0.

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Mechanical properties of solid-electrolyte interphases (SEIs) play pivotal roles in maintaining reversible cycling of Li metal anode. However less attentions have been paid to the integration of kinds of SEIs on Li nuclei, and precise characterization of mechanical properties of SEIs also appear challenging. Herein, we employ combined in-situ atomic force microscope (AFM) based nanoindentation and peak force quantitative nanomechanics (QNM) methods to explore structures, thickness and Young’s moduli of three kinds of SEIs which may appear in “anode-free” Li metal batteries, and correlate mechanical properties with chemical and/or electrochemical origins. Results show that SEIs formed by electrochemical reduction bear conventional double layer structures and are much thicker with smaller Young’s moduli, compared with the inorganic-organic hybrid SEIs formed with involvement of chemical reactions. In-situ AFM monitoring of morphology evolution shows that coexistence of different kinds of SEIs on individual Li nuclei, even with apparently minor differences in thickness and Young’s moduli, could result in breakages of SEI shells upon dissolution of Li nuclei. Our work reveals the importance of integration of kinds of SEIs on Li nuclei and demonstrates the advantage of combined use of nanoindentation and QNM methods in understanding the cause mechanical point of view.

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5

Cloyd, Aya K., Kyle Boone, Qiang Ye, Malcolm L. Snead, Paulette Spencer i Candan Tamerler. "Engineered Peptides Enable Biomimetic Route for Collagen Intrafibrillar Mineralization". International Journal of Molecular Sciences 24, nr 7 (28.03.2023): 6355. http://dx.doi.org/10.3390/ijms24076355.

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Overcoming the short lifespan of current dental adhesives remains a significant clinical need. Adhesives rely on formation of the hybrid layer to adhere to dentin and penetrate within collagen fibrils. However, the ability of adhesives to achieve complete enclosure of demineralized collagen fibrils is recognized as currently unattainable. We developed a peptide-based approach enabling collagen intrafibrillar mineralization and tested our hypothesis on a type-I collagen-based platform. Peptide design incorporated collagen-binding and remineralization-mediating properties using the domain structure conservation approach. The structural changes from representative members of different peptide clusters were generated for each functional domain. Common signatures associated with secondary structure features and the related changes in the functional domain were investigated by attenuated total reflectance Fourier-transform infrared (ATR-FTIR) and circular dichroism (CD) spectroscopy, respectively. Assembly and remineralization properties of the peptides on the collagen platforms were studied using atomic force microscopy (AFM). Mechanical properties of the collagen fibrils remineralized by the peptide assemblies was studied using PeakForce-Quantitative Nanomechanics (PF-QNM)-AFM. The engineered peptide was demonstrated to offer a promising route for collagen intrafibrillar remineralization. This approach offers a collagen platform to develop multifunctional strategies that combine different bioactive peptides, polymerizable peptide monomers, and adhesive formulations as steps towards improving the long-term prospects of composite resins.

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6

Stachiv i Gan. "Hybrid Shape Memory Alloy-Based Nanomechanical Resonators for Ultrathin Film Elastic Properties Determination and Heavy Mass Spectrometry". Materials 12, nr 21 (31.10.2019): 3593. http://dx.doi.org/10.3390/ma12213593.

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Micro-/nanomechanical resonators are often used in material science to measure the elastic properties of ultrathin films or mass spectrometry to estimate the mass of various chemical and biological molecules. Measurements with these sensors utilize changes in the resonant frequency of the resonator exposed to an investigated quantity. Their sensitivities are, therefore, determined by the resonant frequency. The higher resonant frequency and, correspondingly, higher quality factor (Q-factor) yield higher sensitivity. In solution, the resonant frequency (Q-factor) decreases causing a significant lowering of the achievable sensitivity. Hence, the nanomechanical resonator-based sensors mainly operate in a vacuum. Identification by nanomechanical resonator also requires an additional reference measurement on the identical unloaded resonator making experiments, due to limiting achievable accuracies in current nanofabrication processes, yet challenging. In addition, the mass spectrometry by nanomechanical resonator can be routinely performed for light analytes (i.e., analyte is modelled as a point particle). For heavy analytes such as bacteria clumps neglecting their stiffness result in a significant underestimation of determined mass values. In this work, we demonstrate the extraordinary capability of hybrid shape memory alloy (SMA)-based nanomechanical resonators to i) notably tune the resonant frequencies and improve Q-factor of the resonator immersed in fluid, ii) determine the Young’s (shear) modulus of prepared ultrathin film only from frequency response of the resonator with sputtered film, and iii) perform heavy analyte mass spectrometry by monitoring shift in frequency of just a single vibrational mode. The procedures required to estimate the Young’s (shear) modulus of ultrathin film and the heavy analyte mass from observed changes in the resonant frequency caused by a phase transformation in SMA are developed and, afterward, validated using numerical simulations. The present results demonstrate the outstanding potential and capability of high frequency operating hybrid SMA-based nanomechanical resonators in sensing applications that can be rarely achieved by current nanomechanical resonator-based sensors.

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7

Ikuno, Takashi, Shin-ichi Honda, Tatsuro Yasuda, Kenjiro Oura, Mitsuhiro Katayama, Jung Goo Lee i Hirotaro Mori. "Thermally driven nanomechanical deflection of hybrid nanowires". Applied Physics Letters 87, nr 21 (21.11.2005): 213104. http://dx.doi.org/10.1063/1.2133919.

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8

Wang, Chao-Quan, Jian Zou i Zhi-Ming Zhang. "Generating squeezed states of a nanomechanical resonator via a charge qubit in a hybrid system". Modern Physics Letters B 31, nr 36 (13.12.2017): 1750343. http://dx.doi.org/10.1142/s0217984917503432.

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We propose a scheme for generating squeezed states of a nanomechanical resonator. The scheme is based on a hybrid system consisting of two NAMRs and a superconducting charge qubit (SCCQ). The nonlinear interaction between the two nanomechanical resonators (NAMRs) can be implemented by setting the external biased flux of the SCCQ at some certain values, which plays the role of “nonlinear media”. The noise in the SCCQ does not need to be considered, since we can adiabatically keep the SCCQ at the ground state. In addition, the squeezing parameters can also be adjusted by changing the external driving voltage.

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9

Wang, Qi, Min Jang i Yun Fa Chen. "Effects of Nanosized Iron Oxide with Different Morphology on Nanomechanical Properties of Nanocomposite Coating". Key Engineering Materials 336-338 (kwiecień 2007): 2218–20. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2218.

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The nanocomposite coatings were prepared on the surface of PVC substrate using spinning technique with attempts of introducing nanosized iron oxide particles with different morphology into the organic-inorganic hybrid matrices. The hybrid matrices were derived from 3-glycidoxypropyltrimethoxysilane (GLYMO) and tetraethoxysilane (TEOS) with a process of hydrolyzing and condensation. Nanosized iron oxide particles were synthesized by hydrolysis of FeCl3 solution at different pH value and different temperature. The effects of different additions on nanomechanical properties of the nanocomposite coatings were investigated using X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and MTS Nano Indenter XP system. It was found that the acicular α-FeOOH and spherical α-Fe2O3 particles were synthesized, both of them dispersed homogeneously. Nanoindentation and nanoscratch behaviors of the nanoindenter system showed that both of the nanocomposite coatings reinforced the nanomechanical properties of the PVC obviously. Especially, the contribution of acicular α-FeOOH was more remarkable than the spherical α-Fe2O3.

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10

Xi, Xiang, Jingwen Ma, Shuai Wan, Chun-Hua Dong i Xiankai Sun. "Observation of chiral edge states in gapped nanomechanical graphene". Science Advances 7, nr 2 (styczeń 2021): eabe1398. http://dx.doi.org/10.1126/sciadv.abe1398.

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Emerging in diverse areas of physics, edge states have been exploited as an efficient strategy of manipulating electrons, photons, and phonons for next-generation hybrid electro-optomechanical circuits. Among various edge states, gapless chiral edge states harnessing quantum spin/valley Hall effects in graphene or graphene-like materials are especially unique. Here, we report on an experimental demonstration of chiral edge states in gapped “nanomechanical graphene”—a honeycomb lattice of free-standing silicon nitride nanomechanical membranes with broken spatial inversion symmetry. These chiral edge states can emerge from the conventional flat-band edge states by tuning the on-site boundary potentials. We experimentally demonstrated that they are backscattering-immune against sharp bends and exhibit the “valley-momentum locking” effect. We further realized smooth transition between the chiral edge states and the well-known valley kink states. Our results open the door to experimental investigation of exotic graphene-related physics in the very-high-frequency integrated nanomechanical systems.

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11

Papanicolaou, G. C., C. A. Charitidis, D. V. Portan, D. K. Perivoliotis i M. A. Koklioti. "Investigation of nanomechanical properties of multilayered hybrid nanocomposites". Meccanica 49, nr 11 (21.01.2014): 2645–55. http://dx.doi.org/10.1007/s11012-013-9871-z.

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12

Wang, Qiong, i Lan Xu. "Multi-outlet single photon quantum router between optics and microwave based on a hybrid optomechanical system". Laser Physics 32, nr 6 (29.04.2022): 065202. http://dx.doi.org/10.1088/1555-6611/ac603c.

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Abstract A Multi-outlet single photon quantum router between microwave and optical frequency domain is investigated in a system consisting of a superconducting microwave cavity and an optical nanomechanical cavity coupled to a commom nanomechanical resonator (NAMR). It is demonstration that the single-photon of optical frequency can be routed into three different output ports by adjusting microwave power. More importantly, the two output signals can be selected according to microwave power. Meanwhile, we also show that thermal noise will be insignificant for the optical performance of the single-photon router at temperature of the order of 20 mK. Our proposal may have paved a new avenue towards multi-channel router and quantum network.

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13

Tiwari, Atul. "Nanomechanical Analysis of Hybrid Silicones and Hybrid Epoxy Coatings—A Brief Review". Advances in Chemical Engineering and Science 02, nr 01 (2012): 34–44. http://dx.doi.org/10.4236/aces.2012.21005.

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14

Yang, Zhan, Masahiro Nakajima, Yasuhito Ode i Toshio Fukuda. "Tungsten/Platinum Hybrid Nanowire Growth via Field Emission Using Nanorobotic Manipulation". Journal of Nanotechnology 2011 (2011): 1–8. http://dx.doi.org/10.1155/2011/386582.

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This paper reports tungsten-platinum hybrid nanowire growth via field emission, based on nanorobotic manipulation within a field emission scanning electron microscope (FESEM). A multiwalled carbon nanotube (MWCNT) was used as the emitter, and a tungsten probe was used as the anode at the counterposition, by way of nanomanipulation. By independently employing trimethylcyclopentadienyl platinum (CpPtMe3) and tungsten hexacarbonyl (W(CO)6) as precursors, the platinum nanowire grew on the tip of the MWCNT emitter. Tungsten nanowires then grew on the tip of the platinum nanowire. The hybrid nanowire length wascontrolled by nanomanipulation. Their purity was evaluated using energy-dispersive X-ray spectroscopy (EDS). Thus, it is possible to fabricate various metallic hybrid nanowires by changing the precursor materials. Hybrid nanowires have various applications in nanoelectronics, nanosensor devices, and nanomechanical systems.

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15

Jiang, Cheng, Yuanshun Cui i Ka-Di Zhu. "Ultrasensitive nanomechanical mass sensor using hybrid opto-electromechanical systems". Optics Express 22, nr 11 (30.05.2014): 13773. http://dx.doi.org/10.1364/oe.22.013773.

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16

Skarmoutsou, Amalia, Georgios Lolas, Costas A. Charitidis, Maria Chatzinikolaidou, Maria Vamvakaki i Maria Farsari. "Nanomechanical properties of hybrid coatings for bone tissue engineering". Journal of the Mechanical Behavior of Biomedical Materials 25 (wrzesień 2013): 48–62. http://dx.doi.org/10.1016/j.jmbbm.2013.05.003.

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17

Batakliev, Todor, Evgeni Ivanov, Verislav Angelov, Giovanni Spinelli i Rumiana Kotsilkova. "Advanced Nanomechanical Characterization of Biopolymer Films Containing GNPs and MWCNTs in Hybrid Composite Structure". Nanomaterials 12, nr 4 (21.02.2022): 709. http://dx.doi.org/10.3390/nano12040709.

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Nanomechanical definition of the properties of composite specimens based on polylactic acid (PLA) was made in the present study. Research activities with accent on biodegradable polymer nanocomposites have fundamental significance originated from the worldwide plastic waste pollution. To receive hybrid nanocomposites with high level of homogeneity, the low cost and environmentally friendly melt extrusion method has been applied. The role of graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (MWCNTs) as reinforcing nanoparticles dispersed in the polymer matrix was thoroughly investigated. Quasi-static nanoindentation analysis was enriched by performance of accelerated property mapping and nanodynamic mechanical testing in order to fully describe the nanoscale surface homogeneity and stress relaxation behavior of the nanocomposite specimens. That novelty of the research approach had a well-marked contribution over the detection of the new samples’ nanomechanical features as a function of the type of carbon nanofiller. Refined nanoscratch experiments uncovered the resistance of the materials against notches by means of measurement of the coefficient of friction and accurate estimation of the residual penetration depth.

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18

Georgantzinos, Stelios K., Stylianos I. Markolefas, Stamatis A. Mavrommatis i Konstantinos P. Stamoulis. "Finite element modelling of carbon fiber - carbon nanostructure - polymer hybrid composite structures". MATEC Web of Conferences 314 (2020): 02004. http://dx.doi.org/10.1051/matecconf/202031402004.

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The present study deals with the numerical modelling of hybrid laminated composites, which can be proved especially useful in the engineering and maintenance of advanced aerospace primary structures. The lamina is comprised of continuous carbon fibers, thermosetting epoxy polymer matrix, as well as carbon nanostructures, such as graphene or carbon nanotubes, inclusions. Halpin-Tsai equations combined with results obtained from nanomechanical analysis are employed in order to evaluate the elastic properties of the carbon nanostructure/polymer matrix. Then, the obtained elastic properties of the hybrid matrix are used to calculate the orthotropic macro-mechanical properties of the unidirectional composite lamina. A hybrid composite plate is modelled as a 2D structure via the utilization of 4-node, quadrilateral, stress/displacement shell finite elements with reduced integration formulation. The convergence and analysis accuracy are tested. The mechanical performance of the hybrid composites is investigated by considering specific configurations and applying appropriate loading and boundary conditions. The results are compared with the corresponding ones found in the open literature, where it is possible.

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19

Kurizki, Gershon, Patrice Bertet, Yuimaru Kubo, Klaus Mølmer, David Petrosyan, Peter Rabl i Jörg Schmiedmayer. "Quantum technologies with hybrid systems". Proceedings of the National Academy of Sciences 112, nr 13 (3.03.2015): 3866–73. http://dx.doi.org/10.1073/pnas.1419326112.

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An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ongoing effort, devices for quantum information processing, secure communication, and high-precision sensing are being implemented with diverse systems, ranging from photons, atoms, and spins to mesoscopic superconducting and nanomechanical structures. Their physical properties make some of these systems better suited than others for specific tasks; thus, photons are well suited for transmitting quantum information, weakly interacting spins can serve as long-lived quantum memories, and superconducting elements can rapidly process information encoded in their quantum states. A central goal of the envisaged quantum technologies is to develop devices that can simultaneously perform several of these tasks, namely, reliably store, process, and transmit quantum information. Hybrid quantum systems composed of different physical components with complementary functionalities may provide precisely such multitasking capabilities. This article reviews some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and challenges they present and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

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20

Stoica, Iuliana, Elena-Luiza Epure, Catalin-Paul Constantin, Mariana-Dana Damaceanu, Elena-Laura Ursu, Ilarion Mihaila i Ion Sava. "Evaluation of Local Mechanical and Chemical Properties via AFM as a Tool for Understanding the Formation Mechanism of Pulsed UV Laser-Nanoinduced Patterns on Azo-Naphthalene-Based Polyimide Films". Nanomaterials 11, nr 3 (22.03.2021): 812. http://dx.doi.org/10.3390/nano11030812.

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Aromatic polyimides containing side azo-naphthalene groups have been investigated regarding their capacity of generating surface relief gratings (SRGs) under pulsed UV laser irradiation through phase masks, using different fluencies and pulse numbers. The process of the material photo-fluidization and the supramolecular re-organization of the surface were investigated using atomic force microscopy (AFM). At first, an AFM nanoscale topographical analysis of the induced SRGs was performed in terms of morphology and tridimensional amplitude, spatial, hybrid, and functional parameters. Afterward, a nanomechanical characterization of SRGs using an advanced method, namely, AFM PinPoint mode, was performed, where the quantitative nanomechanical properties (i.e., modulus, adhesion, deformation) of the nanostructured azo-polyimide surfaces were acquired with a highly correlated topographic registration. This method proved to be very effective in understanding the formation mechanism of the surface modulations during pulsed UV laser irradiation. Additionally to AFM investigations, confocal Raman measurements and molecular simulations were performed to provide information about structured azo-polyimide chemical composition and macromolecular conformation induced by laser irradiation.

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21

Bota, Sebastià A., Jaume Verd, Xavier Gili, Joan Barceló, Gabriel Torrens, Rafel Perelló, Tomeu Alorda, Carol de Benito i Jaume Segura. "Design Issues for NEM-Relay-Based SRAM Devices". MATEC Web of Conferences 210 (2018): 01005. http://dx.doi.org/10.1051/matecconf/201821001005.

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We analyze the design constraints of six transistor SRAM cells that arise when using nanoelectromechanical relays. Comparisons are performed between a CMOS 6T conventional SRAM cell and various hybrid memory cells built by replacing a selection of MOSFET transistors with NEM relays. Impact on important memory cell parameters such as various reliability metrics like static noise margin and write noise margin and power consumption are evaluated from circuit simulations using a Verilog-A compact model of the nanomechanical relay. We found that the use of relays involve a new challenge in the design of SRAM hybrid devices as the readability and writeability of the resulting cells manifests a strong dependence with the value of the contact resistance of the NEM relay, a parameter that can experience important variations with the continued operation of the device.

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22

Kwon, Soyoung, Corey Stambaugh, Bongsu Kim, Sangmin An i Wonho Jhe. "Dynamic and static measurement of interfacial capillary forces by a hybrid nanomechanical system". Nanoscale 6, nr 10 (2014): 5474–78. http://dx.doi.org/10.1039/c3nr06416f.

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Ahn, Seung-min, Eui Dae Jung, Si-Hoon Kim, Hangeul Kim, Sukbin Lee, Myoung Hoon Song i Ju-Young Kim. "Nanomechanical Approach for Flexibility of Organic–Inorganic Hybrid Perovskite Solar Cells". Nano Letters 19, nr 6 (22.05.2019): 3707–15. http://dx.doi.org/10.1021/acs.nanolett.9b00796.

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Vijai Bharathy, P., Q. Yang i D. Nataraj. "Microstructure and Adhesion Properties of a-CN and Ti/a-CN Nanocomposite Thin Films Prepared by Hybrid Ion Beam Deposition Technique". Advanced Materials Research 938 (czerwiec 2014): 36–39. http://dx.doi.org/10.4028/www.scientific.net/amr.938.36.

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Carbon based materials have attracted much for its unique surface microstructure and nanomechanical properties among researchers. In this study, the influence of microstructure on the nanomechanical properties of thin carbon based films was studied in detail. For which amorphous Carbon nitride (a-CN) and Titanium incorporated amorphous Carbon nitride (Ti/a-CN) thin films were prepared with a thickness of less than 100 nm using hybrid ion beam deposition technique. The incorporation of Ti into the a-CN matrix greatly modified the sp3/sp2 hybridized bonding ratio and it is reflected in the mechanical hardness of Ti/a-CN thin film. Most of the incorporated Ti reacts with carbon and nitrogen to form TiN and TiCN phases respectively. On the other hand, owing to the usage of energetic ion bombardment and the presence of TiN/TiCN phases in the carbon nitride matrix, the Ti/a-CN nanocomposite film shows improved adhesion strength compared to that of pure a-CN film. Overall the presence of hard metallic phase in the amorphous carbon network alters the microstructure and improves the adhesion strength of a-CN films suitable for protective coating applications.

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Smirnova, Evgenia, Alexander Ankudinov, Irina Chepurnaya, Alexander Timonov i Mikhail Karushev. "In-Situ EC-AFM Study of Electrochemical P-Doping of Polymeric Nickel(II) Complexes with Schiff base Ligands". Inorganics 11, nr 1 (14.01.2023): 41. http://dx.doi.org/10.3390/inorganics11010041.

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Conductive electrochemically active metallopolymers are outstanding materials for energy storage and conversion, electrocatalysis, electroanalysis, and other applications. The hybrid inorganic–organic nature of these materials ensures their rich chemistry and offers wide opportunities for fine-tuning their functional properties. The electrochemical modulation of the nanomechanical properties of metallopolymers is rarely investigated, and the correlations between the structure, stiffness, and capacitive properties of these materials have not yet been reported. We use electrochemical atomic force microscopy (EC-AFM) to perform in-situ quantitative nanomechanical measurements of two Schiff base metallopolymers, poly[NiSalphen] and its derivative that contains two methoxy substituents in the bridging phenylene diimine unit poly[NiSalphen(CH3O)2], during their polarization in the electrolyte solution to the undoped and fully doped states. We also get insight into the electrochemical p-doping of these polymers using electrochemical quartz crystal microgravimetry (EQCM) coupled with cyclic voltammetry (CV). Combined findings for the structurally similar polymers with different interchain interactions led us to propose a correlation between Young’s modulus of the material, its maximum doping level, and ion and solvent fluxes in the polymer films upon electrochemical oxidation.

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Durkovic, Jaroslav, František Kačik, Miroslava Mamonova, Rastislav Lagana, Iigrid Canova, Josef Urban i Jana Krajnakova. "New insights into Dutch Elm Disease: cell wall compositional, ecophysiological, vascular and nanomechanical assessments". BALTIC FORESTRY 25, nr 1 (19.02.2019): 10–14. http://dx.doi.org/10.46490/vol25iss1pp010.

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Comprehensive assessments were made of the chemical profiles of woody cell wall components, and also leaf growth, ecophysiological, vascular and nanomechanical traits for two Dutch elm hybrids 'Groeneveld' and 'Dodoens' which possess contrasting tolerances toward Dutch elm disease. Upon infection with Ophiostoma novo-ulmi ssp. americana × novo-ulmi, medium-molecular weight macromolecules of cellulose were degraded in both hybrids. A loss of crystalline and non-crystalline cellulose regions occurred in parallel. In 'Groeneveld' plants, syringyl-rich lignin provided a far greater degree of protection from cellulose degradation, but only guaiacyl-rich lignin in 'Dodoens' plants was involved in a successful defence against the fungus. Unexpectedly, we found a very high proportion of non-significant differences between the infected and non-infected plants of 'Dodoens', including similarities in leaf growth, leaf gas exchange and leaf midrib vascular traits, as well as in the nanomechanical properties of the cell walls of tracheary elements such as modulus of elasticity, adhesion and energy dissipation. Three years after initial inoculations, except for a few traits such as leaf slenderness, relative chlorophyll content, transpiration rate and sap flow density in branches, we found no evidence of a decrease in leaf trait performances among the infected plants of 'Dodoens', despite the occasional persistence of fungal hyphae in the lumens of leaf midrib tracheary elements.

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27

Chen, Huajun. "Robust Four-Wave Mixing and Double Second-Order Optomechanically Induced Transparency Sideband in a Hybrid Optomechanical System". Photonics 8, nr 7 (24.06.2021): 234. http://dx.doi.org/10.3390/photonics8070234.

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We theoretically research the four-wave mixing (FWM) and second-order sideband generation (SSG) in a hybrid optomechanical system under the condition of pump on-resonance and pump off-resonance, where an optomechanical resonator is coupled to another nanomechanical resonator (NR) via Coulomb interaction. Using the standard quantum optics method and input–output theory, we obtain the analytical solution of the FWM and SSG with strict derivation. According to the numerical simulations, we find that the FWM can be controlled via regulating the coupling strength and the frequency difference of the two NRs under different detuning, which also gives a means to determine the coupling strength of the two NRs. Furthermore, the SSG is sensitive to the detuning, which shows double second-order optomechanically induced transparency (OMIT) sidebands via controlling the coupling strength and frequencies of the resonators. Our investigation may increase the comprehension of nonlinear phenomena in hybrid optomechanics systems.

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Roussi, E., A. Tsetsekou, A. Skarmoutsou, C. A. Charitidis i A. Karantonis. "Anticorrosion and nanomechanical performance of hybrid organo-silicate coatings integrating corrosion inhibitors". Surface and Coatings Technology 232 (październik 2013): 131–41. http://dx.doi.org/10.1016/j.surfcoat.2013.04.063.

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Suriano, R., V. Oldani, C. L. Bianchi i S. Turri. "AFM nanomechanical properties and durability of new hybrid fluorinated sol-gel coatings". Surface and Coatings Technology 264 (luty 2015): 87–96. http://dx.doi.org/10.1016/j.surfcoat.2015.01.015.

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Mansour, G., i D. Tzetzis. "Nanomechanical Characterization of Hybrid Multiwall Carbon Nanotube and Fumed Silica Epoxy Nanocomposites". Polymer-Plastics Technology and Engineering 52, nr 10 (9.08.2013): 1054–62. http://dx.doi.org/10.1080/03602559.2013.769581.

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Limousin, Elodie, Daniel E. Martinez-Tong, Nicholas Ballard i José M. Asua. "Cure-Dependent Morphology of Acrylic/Alkyd Hybrid Latex Films via Nanomechanical Mapping". ACS Applied Polymer Materials 1, nr 8 (11.07.2019): 2213–23. http://dx.doi.org/10.1021/acsapm.9b00507.

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Chan, Bin-Da, Kutay Icoz, Richard L. Gieseck i Cagri A. Savran. "Selective Weighing of Individual Microparticles Using a Hybrid Micromanipulator-Nanomechanical Resonator System". IEEE Sensors Journal 13, nr 8 (sierpień 2013): 2857–62. http://dx.doi.org/10.1109/jsen.2013.2262269.

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Tomar, Vikas. "Accelerating the molecular time steps for nanomechanical simulations: Hybrid Monte Carlo method". Journal of Applied Physics 101, nr 10 (15.05.2007): 103512. http://dx.doi.org/10.1063/1.2733746.

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Pollard, Benjamin, i Markus B. Raschke. "Correlative infrared nanospectroscopic and nanomechanical imaging of block copolymer microdomains". Beilstein Journal of Nanotechnology 7 (22.04.2016): 605–12. http://dx.doi.org/10.3762/bjnano.7.53.

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Intermolecular interactions and nanoscale phase separation govern the properties of many molecular soft-matter systems. Here, we combine infrared vibrational scattering scanning near-field optical microscopy (IR s-SNOM) with force–distance spectroscopy for simultaneous characterization of both nanoscale optical and nanomechanical molecular properties through hybrid imaging. The resulting multichannel images and correlative analysis of chemical composition, spectral IR line shape, modulus, adhesion, deformation, and dissipation acquired for a thin film of a nanophase separated block copolymer (PS-b-PMMA) reveal complex structural variations, in particular at domain interfaces, not resolved in any individual signal channel alone. These variations suggest that regions of multicomponent chemical composition, such as the interfacial mixing regions between microdomains, are correlated with high spatial heterogeneity in nanoscale material properties.

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35

Sadr, Alireza, Toru Nikaido, Tomohiro Takagaki, Ilnaz Hariri, Amir Nazari i Junji Tagami. "Ultra-Morphological and Nanomechanical Characterization of Reinforced Enamel and Dentin by Self-Etch Adhesives: The Super Tooth". Journal of Nano Research 16 (styczeń 2012): 131–40. http://dx.doi.org/10.4028/www.scientific.net/jnanor.16.131.

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Using various electron microscopy techniques, we have demonstrated that resistance of enamel and dentin to acid attack could be increased in an acid-base resistant zone which was formed following the application of some acidic monomers, especially phosphoric-acid ester methacrylates incorporated into a few self-etching dental adhesives. We proposed that the diffusion of such acidic monomers beyond the classic hybrid layer (interfacial zone) and their ion-exchange interactions with the available hydroxyapatite could result in formation of stable organic-inorganic complexes, and that the structures should be termed “super tooth”, as they would in concept withstand major causes of dental caries and tissue degradation. We also reported that the fluoride-release from these biomaterials could contribute to reinforcement of the underlying tissue. On mechanical testing methodology, we demonstrated that time-dependent nanomechanical response of dental structures in nanoindentation could provide useful information that may not be derived under large-scale fracture experiments such as the common bonding tests. In the present paper, we present some of our recent findings on the ultra-morphological and nanomechanical characteristics of super enamel and super dentin created by self-etching adhesives, compared with sound tissue and the tissue bonded by conventional adhesives following phosphoric-acid treatment or etch-and-rinse adhesives.

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Chen, Hua-Jun. "Controllable fast and slow light in the hybrid quantum dot–nanomechanical resonator system mediated by another nanomechanical resonator with Coulomb interaction". Journal of Applied Physics 130, nr 20 (28.11.2021): 204302. http://dx.doi.org/10.1063/5.0058426.

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Chen, Huajun. "Nanoresonator Enhancement of Majorana-Fermion-Induced Slow Light in Superconducting Iron Chains". Micromachines 12, nr 12 (23.11.2021): 1435. http://dx.doi.org/10.3390/mi12121435.

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We theoretically investigate Fano resonance in the absorption spectrum of a quantum dot (QD) based on a hybrid QD-nanomechanical resonator (QD–NR) system mediated by Majorana fermions (MFs) in superconducting iron (Fe) chains. The absorption spectra exhibit a series of asymmetric Fano line shapes, which are accompanied by the rapid normal phase dispersion and induce the optical propagation properties such as the slow light effect under suitable parametric regimes. The results indicated that the slow light induced by MFs can be obtained under different coupling regimes and different detuning regimes. Moreover, we also investigated the role of the NR, and the NR behaving as a phonon cavity enhances the slow light effect.

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38

Gao, Yong-Pan, Tie-Jun Wang, Ling-Yan He, Yong Zhang i Chuan Wang. "Electronically controlled plasmonic switch using a nanomechanical oscillator and metallic nanoparticle hybrid system". Laser Physics Letters 12, nr 10 (16.09.2015): 105202. http://dx.doi.org/10.1088/1612-2011/12/10/105202.

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Ryou, H., L. N. Niu, L. Dai, C. R. Pucci, D. D. Arola, D. H. Pashley i F. R. Tay. "Effect of Biomimetic Remineralization on the Dynamic Nanomechanical Properties of Dentin Hybrid Layers". Journal of Dental Research 90, nr 9 (5.07.2011): 1122–28. http://dx.doi.org/10.1177/0022034511414059.

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Wang, Huan, i Ka-Di Zhu. "Coherent optical spectroscopy of a hybrid nanocrystal complex embedded in a nanomechanical resonator". Optics Express 18, nr 15 (15.07.2010): 16175. http://dx.doi.org/10.1364/oe.18.016175.

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Geng, Qi, i Ka-Di Zhu. "Determination of nonlinear nanomechanical resonator-qubit coupling coefficient in a hybrid quantum system". Applied Optics 55, nr 20 (6.07.2016): 5358. http://dx.doi.org/10.1364/ao.55.005358.

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Obradović, Vera, Dušica B. Stojanović, Bojan Jokić, Milorad Zrilić, Vesna Radojević, Petar S. Uskoković i Radoslav Aleksić. "Nanomechanical and anti-stabbing properties of Kolon fabric composites reinforced with hybrid nanoparticles". Composites Part B: Engineering 108 (styczeń 2017): 143–52. http://dx.doi.org/10.1016/j.compositesb.2016.09.095.

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Babu, J. S. S., i C. G. Kang. "Nanomechanical properties of magnesium-based hybrid composites with graphite nanofiber and alumina short fiber". Journal of Composite Materials 45, nr 25 (12.10.2011): 2685–95. http://dx.doi.org/10.1177/0021998311401109.

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In this study, an attempt was made to evaluate the nanomechanical properties of magnesium-based hybrid composites with graphite nanofibers (GNFs) and alumina short fibers (Al2O3sf) by nanoindentation. The nanoindentation was performed using continuous stiffness measurement (CSM) method with an indentation depth of 2000 nm. To find out the modulus and hardness of composites of local regions, indentation tests were carried out in different locations of the sample, such as GNFs/Al2O3sf region, Al2O3sf region, GNFs cluster, and Mg matrix. The modulus and hardness values closer to the GNFs/Al2O3sf region are higher than those of the corresponding to the other regions primarily because of a higher constraint to the localized matrix deformation during indentation. Furthermore, the presence of GNFs can act as a barrier for movement of dislocations enhancing the indentation properties. The presence of MgO/Mg17Al12 also can contribute to improve the nanoindentation properties of the present composite system.

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TAO, XUE WEI, ZHANG ZHONG WANG, XIAO BO ZHANG, ZHI XIN BA i YA MEI WANG. "NANOMECHANICAL AND CORROSION PROPERTIES OF ZK60 MAGNESIUM ALLOY IMPROVED BY GD ION IMPLANTATION". Surface Review and Letters 21, nr 06 (grudzień 2014): 1450085. http://dx.doi.org/10.1142/s0218625x14500851.

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Gadolinium ( Gd ) ion implantation with doses from 2.5 × 1016 to 1 × 1017 ions/cm2 into ZK60 magnesium alloy was carried out to improve its surface properties. X-ray photoelectron spectroscopy (XPS), nanoindenter, electrochemical workstation and scanning electron microscope (SEM) were applied to analyze the chemical composition, nanomechanical properties and corrosion characteristics of the implanted layer. The results indicate that Gd ion implantation produces a hybrid-structure protective layer composed of MgO , Gd 2 O 3 and metallic Gd in ZK60 magnesium alloy. The surface hardness and modulus of the Gd implanted magnesium alloy are improved by about 300% and 100%, respectively with the dose of 1 × 1017 ions/cm2, while the slowest corrosion rate of the magnesium alloy in 3.5 wt.% NaCl solution is obtained with the dose of 5 × 1016 ions/cm2.

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ARULMURUGAN, S., i N. VENKATESHWARAN. "THE EFFECT OF FIBER REINFORCEMENT ON FRACTURE TOUGHNESS ASSESSMENT OF NANOCLAY FILLED POLYMER COMPOSITES". Surface Review and Letters 26, nr 09 (17.10.2019): 1950050. http://dx.doi.org/10.1142/s0218625x19500501.

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This paper represents the nanomechanical properties of various loading levels of montmorillonite clay filled polyester composites and randomly distributed jute fiber reinforced hybrid composites through Vickers micro-hardness test. The study of indentation fracture mechanics in polymer materials is a simple and cost-effective technique for the determination of fracture toughness. Ultrasonication technique was used to disperse the clay in the polyester matrix. The hand layup method was adapted to prepare the test specimens. Incorporation of 5[Formula: see text]wt.% montmorillonite clay into the polymer matrix results in an enhancement in hardness of 26.52% and the modulus of elasticity increased from 4205.21[Formula: see text]MPa for neat polyester to 5051.46[Formula: see text]MPa with the addition of clay. Fracture toughness was observed to depend on the montmorillonite clay content, and the maximum value was observed at 5[Formula: see text]wt.% nanoclay and 25[Formula: see text]wt.% jute fibers. The results show that the increase in the fiber content reduces the crack propagation in hybrid composites and increases the fracture toughness. To predict the crack size, the scanning electron microscope images are used.

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Babu, JSS, A. Srinivasan i CG Kang. "Nano and macromechanical properties of aluminium (A356) based hybrid composites reinforced with multiwall carbon nanotubes/alumina fiber". Journal of Composite Materials 51, nr 11 (27.07.2016): 1631–42. http://dx.doi.org/10.1177/0021998316661228.

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Nano-microhybrid reinforced metal matrix composites are the novel combination of composite system which enhanced the mechanical properties of the metal matrix composites. The aim of this study is to determine the nano- and macromechanical properties of aluminium (A356)-based hybrid composites reinforced with multiwall carbon nanotubes and alumina short fibers (Al2O3sf). Hybrid preforms were developed initially, by a combination of multiwall carbon nanotubes and Al2O3sf with total volume fractions of 10%, 15% and 20% and by varying the weight percentage of multiwall carbon nanotubes such as 1%, 2% and 3%. The fabricated hybrid preforms were then infiltrated with aluminium alloy (A356), and the microstructure and mechanical properties of the composites were evaluated. The distribution of multiwall carbon nanotubes within the array of the Al2O3sf network which exists in clusters was found to be relatively good. The mechanical properties such as the hardness and tensile strength of Al-based hybrid metal matrix composites were found to be improved by up to 2 wt% of multiwall carbon nanotubes. The causative reason for this is attributed to a combined effect of both multiwall carbon nanotubes and Al2O3sf, which contributed to better load sharing between the fibers and the Al matrix, and also accounted for the resistance of dislocation movements caused by the presence of the multiwall carbon nanotubes. In addition, the continuous stiffness measurement method was also used to evaluate the nanomechanical properties of the composites. The results showed that the influence of multiwall carbon nanotubes highlighted the properties on a nanoscale.

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Asghari Nejad, A., H. R. Askari i H. R. Baghshahi. "Cooling of a nanomechanical resonator in a hybrid optomechanical system: Effect of parametric interactions". Physica E: Low-dimensional Systems and Nanostructures 102 (sierpień 2018): 83–87. http://dx.doi.org/10.1016/j.physe.2018.04.036.

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Chao-Quan, Wang, Zou Jian i Zhang Zhi-Ming. "Generating Squeezed States of Nanomechanical Resonator via a Flux Qubit in a Hybrid System". Chinese Physics Letters 33, nr 2 (luty 2016): 024202. http://dx.doi.org/10.1088/0256-307x/33/2/024202.

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Alvarez, Mar, David Fariña, Alfonso M. Escuela, Jose Ramón Sendra i Laura M. Lechuga. "Development of a surface plasmon resonance and nanomechanical biosensing hybrid platform for multiparametric reading". Review of Scientific Instruments 84, nr 1 (styczeń 2013): 015008. http://dx.doi.org/10.1063/1.4789430.

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Gutierrez, Junkal, Iñaki Mondragon i Agnieszka Tercjak. "Quantitative Nanoelectrical and Nanomechanical Properties of Nanostructured Hybrid Composites by PeakForce Tunneling Atomic Force Microscopy". Journal of Physical Chemistry C 118, nr 2 (3.01.2014): 1206–12. http://dx.doi.org/10.1021/jp407690s.

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