Bibliografías temáticas / Hybrid nanomechanics

Literatura académica sobre el tema "Hybrid nanomechanics"

Autor: Grafiati
Publicado: 27 de julio de 2024
Última modificación: 28 de julio de 2024

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Índice

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Hybrid nanomechanics".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Hybrid nanomechanics"

1

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

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

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

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Lin, F., Y. Xiang y H. S. Shen. "Buckling of Graphene Embedded in Polymer Matrix Under Compression". International Journal of Structural Stability and Dynamics 15, n.º 07 (31 de agosto de 2015): 1540016. http://dx.doi.org/10.1142/s0219455415400167.

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Wang, Wei-Wei, Yu Gu, Jun-Hao Wang, Zhao-Bin Chen, Xiao-Ting Yin, Qi-Hui Wu, Jia-Wei Yan y Bing-Wei Mao. "Probing Mechanical Properties of Solid-Electrolyte Interphases on Li Nuclei by In Situ AFM". Journal of The Electrochemical Society 169, n.º 2 (1 de febrero de 2022): 020563. http://dx.doi.org/10.1149/1945-7111/ac53d0.

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Cloyd, Aya K., Kyle Boone, Qiang Ye, Malcolm L. Snead, Paulette Spencer y Candan Tamerler. "Engineered Peptides Enable Biomimetic Route for Collagen Intrafibrillar Mineralization". International Journal of Molecular Sciences 24, n.º 7 (28 de marzo de 2023): 6355. http://dx.doi.org/10.3390/ijms24076355.

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Stachiv y Gan. "Hybrid Shape Memory Alloy-Based Nanomechanical Resonators for Ultrathin Film Elastic Properties Determination and Heavy Mass Spectrometry". Materials 12, n.º 21 (31 de octubre de 2019): 3593. http://dx.doi.org/10.3390/ma12213593.

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Ikuno, Takashi, Shin-ichi Honda, Tatsuro Yasuda, Kenjiro Oura, Mitsuhiro Katayama, Jung Goo Lee y Hirotaro Mori. "Thermally driven nanomechanical deflection of hybrid nanowires". Applied Physics Letters 87, n.º 21 (21 de noviembre de 2005): 213104. http://dx.doi.org/10.1063/1.2133919.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Wang, Chao-Quan, Jian Zou y Zhi-Ming Zhang. "Generating squeezed states of a nanomechanical resonator via a charge qubit in a hybrid system". Modern Physics Letters B 31, n.º 36 (13 de diciembre de 2017): 1750343. http://dx.doi.org/10.1142/s0217984917503432.

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

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

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

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

Texto completo
Resumen
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.
Los estilos APA, Harvard, Vancouver, ISO, etc.
Más fuentes

Tesis sobre el tema "Hybrid nanomechanics"

1

Nair, Sithara. "Novel Fluorous Hybrid Surface Modification Characterized by Wetting Dynamics, Morphology and Nanomechanics". VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/446.

Texto completo
Resumen
The surface response of a polymer substrate to external stimuli such as initial wetting is controlled by the outermost molecular layer. Thus, changes on the nanoscale may be engaged to control macroscale wetting behavior. Our work has predominantly focused on surface modification of conventional polyurethane coatings (HMDI-BD-PTMO). Studies on network constrained phase separation and facile polydimethylsiloxane surface functionalization led to the discovery of a simpler one-step and more general approach to functional polymer surfaces that we have designated as “Bottle-Brush Nanoglass” (BB-NG) after the two principle components: (a) a polyoxetane soft block “spine” with side chain “A” bristles and triethoxysilyl chain ends and (b) an alkoxysilane that together with BB chain ends comprise precursors to a “nanoglass”, NG phase. This paper focuses on the extent of modification for a conventional aliphatic polyurethane using a range of fluoropolyoxetane (poly(trifluoroethoxymethyl-methyl oxetane) diol) or 3F diol based modifier concentrations. Upon generating a blend of the polyurethane with the modifier, the BB-NG which is a minor constituent of the blend, phase separates to provide the topmost layer of the coating. Initial results demonstrate that the modified polymer coatings exhibit an expected increase in contact angles with water. Wetting behavior was characterized using the sessile drop technique as well as Dynamic Contact Analysis (DCA, Wilhelmy Plate). Surface composition as well as near surface topology and morphology are characterized by X-ray Photoelectron Spectroscopy (XPS) and Tapping Mode Atomic Force Microscopy (TM-AFM) respectively. Contrast in phase images reflect the surface modulus and viscoelasticity, from which physical form or compositional differences may be deduced. These characteristics have also been explored in our study by hardness tests via nanoindentation.
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Rohr, Sven. "Hybrid spin-nanomechanical systems in parametric interaction". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENY046/document.

Texto completo
Resumen
L'exploration du monde quantique au moyen d'objets macroscopiques constitue l'un des défis centraux de ces dernières décennies pour la recherche en physique. Parmi les systèmes proposés pour atteindre cet objectif, les systèmes hybrides, qui couplent un résonateur nanomécanique à un qubit unique, font figure de paradigme.L'excitation cohérente d'un oscillateur mécanique macroscopique par un unique spin électronique ouvrirait en particulier de nouvelles perspectives pour la création d'états quantiques arbitraires du mouvement.Dans ce manuscrit, nous considérons un système hybride constitué d'un oscillateur nanomécanique et du spin électronique d'un unique centre NV, couplés entre eux par une interaction magnétique. Nous nous concentrons sur le cas d'une interaction paramétrique où la vibration mécanique module l'énergie du qubit, et plus précisément sur le cas où le qubit ainsi forcé et l'oscillateur mécanique évoluent sur des échelles de temps comparables.Dans cette situation, nos observations montrent une synchronisation de la dynamique du qubit sur l'oscillation mécanique. Le phénomène est dans un premier temps abordé par une expérience-test qui remplace le mouvement mécanique par un champ radiofréquence en couplage paramétrique avec le spin. Cette première implémentation permet de dégager les propriétés essentielles de l'effet paramétrique, qui est dans un second temps observé sur l'expérience principale.Dans cette seconde expérience, un centre NV est attaché à l'extrémité d'un nanofil de carbure de silicium en vibration placé dans un fort gradient de champ magnétique. Le caractère bidimensionnel des déformations du nanofil octroie alors à la synchronisation des signatures vectorielles encore inédites, qui peuvent aussi être interprétées comme la manifestation d'un triplet de Mollow phononique, ainsi qu'il a été observé dans les premières expériences d'électrodynamique quantique.Finalement, nous explorons la robustesse de la synchronisation vis-à-vis du mouvement Brownien du résonateur, et démontrons la possibilité de protéger le qubit de cette source de décohérence additionnelle grâce à une excitation mécanique de faible amplitude
Probing the quantum world with macroscopic objects has been a core challenge for research in physics during the past decades. Proposed systems to reach this goal include hybrid devices that couple a nanomechanical resonator to a single spin qubit. In particular, the coherent actuation of a macroscopic mechanical oscillator by a single electronic spin would open perspectives in the creation of arbitrary quantum states of motion.In this manuscript, we investigate a hybrid system coupling a nanomechanical oscillator and a single electronic spin of a NV defect in magnetic interaction. We focus on the parametric interaction case, when the mechanical motion modulates the qubit energy, and in particular when the driven qubit and mechanical oscillators evolves on similar timescales. In that situation a synchronization of the qubit dynamics onto the mechanical motion is observed. The phenomenon is first explored on a test experiment where mechanical motion is replaced by a parametrically coupled RF field. It allows to establish the main properties of the phenomenon, which is subsequently investigated on the core experiment. It consists of a NV defect attached at the vibrating extremity of a silicon carbide nanowire, immersed in a strong magnetic field gradient. The bidimensional character of the nanowire deformations is responsible for novel vectorial signatures in the synchronization, which can also be viewed as a phononic Mollow triplet as observed in early quantum electrodynamics experiments. We finally explore the robustness of the synchronization against the Brownian motion of the resonator and demonstrate the possibility to protect the qubit against this additional decoherence source by applying a small coherent mechanical drive
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Mercier, de Lépinay Laure. "Habillage mécanique d'un nanofil par un champ de force : de la mesure vectorielle ultrasensible aux systèmes quantiques hybrides". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAY016/document.

Texto completo
Resumen
L'étude du couplage hybride entre les vibrations d'un résonateur mécanique et un degré de liberté quantique requiert une très grande sensibilité en force. Ceci a motivé le développement récent de nano-oscillateurs ultra-légers, qui constituent des sondes de force ultra-sensibles opérant désormais au niveau de l'attoNewton.Le premier volet de ce travail traite de l'habillage mécanique d'un nanofil suspendu de carbure de silicium, oscillant dans deux directions transverses. Son évolution Brownienne ou excitée dans un champ de force externe perturbe ses propriétés : fréquences et directions propres de vibration. Une technique de mesure optique des vibrations du nanofil en deux dimensions a été développée. Elle a permis, dans un premier temps, de cartographier un champ de force électrostatique, révélant une phénoménologie de l'habillage spécifique aux dimensions supérieures à un. En particulier, les composantes cisaillantes du champ induisent une rotation des directions propres de vibration. Dans un deuxième temps, la technique de mesure a été testée dans un champ de force optique, produit par un laser focalisé sur le nanofil, et qui contient une composante rotationnelle, non conservative. On rapporte l'observation d'une brisure de l'orthogonalité des modes propres, d'une distorsion et d'une amplification des spectres de mouvement Brownien, toutes en accord avec le modèle décrivant l'habillage mécanique du nanofil par ce champ de force externe non potentiel. A partir d'un protocole adapté à la multi-dimensionnalité du système, une déviation à la relation fluctuation-dissipation a également été mesurée : il s'agit d'une conséquence de la sortie de l'équilibre induite par la force optique non-conservative. L'étude des propriétés thermodynamiques du système suggère des corrections à la relation fluctuation-dissipation et prédit enfin un phénomène de compression du bruit thermique de l'oscillateur en champ de force rotationnel.Le deuxième volet de la thèse concerne le système hybride constitué d'un nanofil et d'un qubit de spin, un centre coloré NV du diamant attaché à son extrémité. Les propriétés optiques de cette source de photons uniques oscillante sont caractérisées à partir de la mesure de corrélations spatio-temporelles de la fluorescence du centre NV sur lesquelles les vibrations de l'oscillateur se retrouvent encodées. Nous avons ainsi développé un système de mesure du mouvement compatible avec de très faibles flux de photons, inférieurs en particulier au taux de décohérence mécanique. La dernière partie de ce manuscrit présente une étude préliminaire du couplage du spin-mécanique. Après l'observation d'un triplet de Mollow phononique, les développements expérimentaux de la première partie de la thèse ont été intégrés à une expérience hybride de seconde génération stabilisée amenant la mesure de force ultra-sensible à la portée du système hybride
The study of the hybrid coupling between the vibrations of a mechanical resonator and a quantum degree of freedom requires extremely high force sensitivities. This was one of the motivations for the recent development of ultra-light nano-oscillators which are ultra-sensitive force probes now routinely operating at the attoNewton level.The first part of this work deals with the mechanical dressing of a silicon carbide suspended nanowire oscillating in two transverse directions. Its Brownian or driven evolution in an external force field modifies its mechanical properties: eigen-frequencies and eigen-directions of oscillation. An optical technique to measure the nanowire vibrations in two dimensions was developed. First, this technique enabled to map out an electrostatic force field, which revealed a dressing phenomenology specific to dimensions greater than one. In particular, shearing components of the force field are responsible for a rotation of the eigen-directions of vibration. Second, the measurement technique was tested in an optical force field applied by a laser focused on the nanowire. This field contains a rotational, non-conservative component. The reported experimental observations: eigenmodes orthogonality breaking, distorsion and amplification of Brownian motion spectra, are all in good agreement with the model of the mechanical dressing. Using a protocol adapted to the multidimensionality of the system, a deviation to the fluctuation-dissipation relation has also been measured, as a consequence of the non-conservative force bringing the system out of equilibrium. The study of this system's thermodynamic properties suggests corrections to the fluctuation-dissipation relation and predicts a squeezing of the oscillator's thermal noise in rotational force fields.The second part of the thesis concerns the hybrid system composed of a nanowire and a spin qubit: a colored NV center in diamond bound to its extremity. The optical properties of this oscillating single photon source are characterized through the measurement of space-time fluorescence correlations on which the oscillator's vibrations are encoded. We then developed a motion measurement technique compatible with very low photon fluxes, in particular inferior to the mechanical decoherence rate. The last part of the manuscript presents a preliminary study of the spin-mechanical coupling. After the observation of a phononic Mollow triplet, the experimental developments of the first part of the thesis were integrated in a second-generation stabilized hybrid experiment bringing the ultrasensitive force measurement within the reach of the hybrid system
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Finazzer, Matteo. "Boîtes quantiques accordées par contrainte mécanique et nanostructures photoniqueslarge bande pour le traitement quantique de l'information". Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALY014.

Texto completo
Resumen
Les sources de photons uniques indiscernables accordables en longueur d’onde sont des composants clés pour les technologies quantiques de l'information. La réalisation d'un tel dispositif avec une boîte quantique semi-conductrice (BQ) nécessite un "bouton" pour accorder la longueur d'onde de l’émetteur et une structure photonique offrant une grande efficacité d'extraction de la lumière sur une large bande passante. Cette thèse présente plusieurs étapes importantes vers cet objectif.Nous étudions tout d'abord une cavité nanonocylindre, structure photonique qui, bien que très simple, offre une forte accélération de l'émission spontanée par effet Purcell sur une large bande passante. Pour la première fois, nous réalisons une spectroscopie strictement résonante d'une BQ intégrée dans une telle structure, en exploitant une détection avec une polarisation croisée pour supprimer la lumière parasite associée au laser d’excitation (collaboration avec le groupe de Richard Warburton). Ceci a permis une caractérisation fine des propriétés optiques de l'émetteur.Nous démontrons ensuite une source de photons uniques accordable basée sur une BQ intégrée dans une antenne à fil photonique. Des électrodes intégrées appliquent une force électrostatique qui tord le fil ; la déformation mécanique qui en résulte modifie l'énergie de bande interdite des BQs. Nous contrôlons la direction de flexion du fil et démontrons le décalage, vers les grandes comme vers les courtes longueurs d’ondes, de l'émission des BQs.En utilisant une tension alternative, l'actuation électrostatique peut également exciter les modes de vibration du nanofil. Cette capacité est intéressante dans le contexte de la nanomécanique hybride. Dans ces expériences, nous tirons parti de la photoluminescence des BQs pour détecter et identifier les modes de vibration mécaniques. En particulier, nous mettons en évidence un mode de flexion d'ordre élevé qui résonne à 190 MHz, une valeur qui dépasse le taux d’émission spontanée de la BQ. Ceci constitue une étape importante vers l’obtention du régime de bandes latérales résolues pour ce système.Les dispositifs étudiés dans ce travail ouvrent des perspectives très prometteuses pour les développements futurs de la photonique quantique et de la nanomécanique hybride
Bright and tunable sources of indistinguishable single photons are key devices for photonic quantum information technologies. Building such a source with a semiconductor quantum dot (QD) requires a “knob” to tune the QD emission wavelength combined with a broadband photonic structure for light extraction. This thesis reports several important steps towards this goal.We first investigate a nanocylinder cavity, a photonic structure that, despites its simplicity, offers a pronounced Purcell acceleration of spontaneous emission over a large spectral bandwidth. We demonstrate the first resonant optical spectroscopy of a QD embedded in a nanopost cavity, by leveraging a cross-polarization scheme that efficiently suppresses stray laser light (collaboration with the group of Richard Warburton). This technique enabled a precise characterization of the optical properties of the emitter.We next demonstrate a tunable single-photon source based on a QD embedded in a tapered photonic wire. In our device, a set of on chip electrodes biased with a DC voltage applies an electrostatic force to the wire. As the wire bends, the resulting mechanical strain changes the bandgap energy of the embedded QDs. We demonstrate both a large increase and a large decrease of the QD emission wavelength by controlling the wire bending direction.With an AC voltage, the above-mentioned actuation scheme can also excite the vibration modes of the nanowire. This capability is interesting in the context of hybrid nanomechanics. In our experiments, we leverage the QD photoluminescence to detect and identify the wire mechanical vibrations. In particular, we evidence a high-order flexural mode that resonates at 190 MHz, a value that exceeds the QD radiative rate. This constitutes an important step towards the spectrally-resolved-sidebands regime.The devices demonstrated in this work open promising prospects for the future developments of quantum photonics and hybrid nanomechanics
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Yeo, Inah. "A quantum dot in a photonic wire : spectroscopy and optomechanics". Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENY076/document.

Texto completo
Resumen
Dans cette thèse, nous avons étudié les propriétés optiques de boîtes quantiques InAs/GaAs contenues dans un fil photonique. Des résultats antérieurs à cette thèse ont montré que ces fils photoniques permettent d’extraire les photons avec une efficacité très élevée.Le premier résultat original de ce travail est l’observation de la dérive temporelle de la raie d’émission de la photoluminescence d’une boîte quantique. Cet effet a été attribué à la lente modification de la charge de surface du fil due à l’absorption des molécules d’oxygène présentes dans le vide résiduel du cryostat. Nous avons montré qu’une fine couche de Si3N4 permettait de supprimer cette dérive. La dérive temporelle pouvant être différente pour différentes boites quantiques, nous avons pu tirer partie de cet effet pour mettre en résonance deux boites quantiques contenues dans le même fil.Le deuxième résultat original est la mise en évidence de la modification de l’énergie d’émission d’une boîte quantique soumise à une contrainte mécanique induite par la vibration du fil. Nous avons observé que le spectre de la raie d’émission d’une boîte quantique s’élargit considérablement lorsque le fil est mécaniquement excité à sa fréquence de résonance. A l’aide d’une illumination stroboscopique synchronisée avec l’excitation mécanique, nous avons pu reconstruire l’évolution du spectre d’une boîte quantique au cours d’une période de la vibration mécanique. L’amplitude de l’oscillation spectrale de la raie de luminescence dépend de la position de la boîte dans le fil à cause d’un très fort gradient de contrainte. En utilisant deux modes d’oscillation mécanique de polarisations linéaires et orthogonales, nous pouvons extraire une cartographie complète de la position des boîtes quantiques à l’intérieur du fil. Enfin, grâce à ce gradient, on peut, dans certains cas, trouver une position du fil pour laquelle deux boites quantiques peuvent être amenées en résonance
In the framework of this thesis, single InAs/GaAs quantum dot devices were studied by optical means. Starting with a general description of self-assembled InAs QDs, two types of single QD devices were presented. The first approach was a tapered GaAs photonic wire embedding single InAs QDs whose efficiency as a single photon source was previously shown to be 90%. We investigated several optical properties of the single QDs. The charged and neutral states of the QD were identified and selectively excited using quasi-resonant excitation.The first original result of this thesis is the observation of a continuous temporal blue-drift of the QD emission energy. We attributed this blue drift to oxygen adsorption onto the sidewall of the wire, which modified the surface charge and hence the electric field seen by the QD. Moreover, we demonstrated that a proper coating of the GaAs photonic nanowire surface suppressed the drift. The temperature effect on this phenomenon revealed an adsorption peak around 20K, which corresponds to the adsorption of oxygen on GaAs. This observation is in good agreement with previous temperature studies with a tapered photonic wire. This was the first study of the spectral stability of photonic wires embedding QDs, crucial for resonant quantum optics experiments. As an alternative, we took advantage of this temporal drift to tune QD emission energies. In a controlled way, we tuned into resonance two different QDs which were embedded in the same photonic nanowire. In the last part of this work, we studied the influence of the stress on single QDs contained in a trumpet-like GaAs photonic wire. The main effect of stress is to shift the luminescence lines of a QD. We applied the stress by exciting mechanical vibration modes of the wire. When the wire is driven at its the mechanical resonance the time-integrated photoluminescence spectrum is broaden up to 1 meV owing to the oscillating stress, The measured spectral modulation is a first signature of strain-mediated coupling between a mechanical resonator and embedded QD single light emitter. With a stroboscopic technique, we isolated a certain phase of the oscillating wire and thereby selected a value of QD emission energies. As a highlight of our study, we managed to bring two different QDs contained in the same wire into resonance by controlling their relative phase. In addition, we could extract the 2D spatial positioning of embedded QDs from the spectral shifts observed for two orthogonal mechanical polarizations.. The investigation of the strain-mediated tuning of QDs can, therefore, be an effective tool to explore the QD positions without destroying the sample
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Pernpeintner, Matthias Elmar Maria [Verfasser], Rudolf [Akademischer Betreuer] [Gutachter] Gross y Jonathan J. [Gutachter] Finley. "Nanomechanical hybrid systems / Matthias Elmar Maria Pernpeintner. Betreuer: Rudolf Gross. Gutachter: Rudolf Gross ; Jonathan J. Finley". München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1111776431/34.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Deng, Yan. "Mechanical Characterization of Carbon Nanotubes/Graphene Oxides Grafted onto Carbon Fibres and Their Hybrid Composites". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18590.

Texto completo
Resumen
Carbon nanotubes (CNTs) and graphene oxides (GOs) grafted hybrid fibres are emerging as a class of material proposed to replace traditional carbon fibres (CFs) in reinforcing composite structures. Understanding the multi-scale mechanics is of great significance for future designing of high performance hybrid nanomaterials. This thesis investigates the mechanical properties of CNT/GO grafted CFs and their hybrid composites by utilizing both nanomechanical and micromechanical experimental techniques. The unique failure mechanisms of individual CNTs at nanoscale are investigated via in situ SEM pull-out, shear and peel tests. The effect of loading angle on the mixed mode adhesion toughness at a CNT-CF interface is investigated for the first time. An in situ peel test method that ensures a stable crack growth is developed for determining the adhesion energy between CNT-CNT and between CNT-CF. The shearing and failure behaviour of CNT-CNT junctions are investigated via in situ shear tests. A simple single-lap joint test is developed for determining the interfacial shear strength (IFSS) between fibre and matrix via non-instrument-specific technique. The influence of CNT grafting density on the IFSS is examined. A multi-scale analytical model is also developed. The mechanics of GO-grafted CF hybrid composites at each length scale are characterized via in situ pull-out tests and single-lap joint tests. In addition, single fibre tensile test results demonstrate that the strength of a CF could be maintained and even improved by introducing CNT/GO via our chemical grafting method. The high grafting strengths and enhanced tensile and interfacial shear strengths of the present CNT-CF and GO-CF hybrid materials can significantly increase the interfacial and impact properties for the next generation advanced aerospace composite structures.
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Wagner, Tobias [Verfasser]. "Realization of a Hybrid Quantum System Consisting of Ultra-cold Atoms and a Nanomechanical Oscillator / Tobias Wagner". München : Verlag Dr. Hut, 2020. http://d-nb.info/1222353008/34.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Windisch, Tjark Florian [Verfasser]. "Magnetic investigations on correlated electrons in a pseudo-spin-system and ferromagnetic/nanomechanical hybrid systems / Tjark Florian Windisch". München : Verlag Dr. Hut, 2011. http://d-nb.info/1010446797/34.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Schwienbacher, Daniel [Verfasser], Hans-Gregor [Akademischer Betreuer] Hübl, Christian [Gutachter] Back y Hans-Gregor [Gutachter] Hübl. "Coupling phenomena in Nanomechanical Hybrid Systems / Daniel Schwienbacher ; Gutachter: Christian Back, Hans-Gregor Hübl ; Betreuer: Hans-Gregor Hübl". München : Universitätsbibliothek der TU München, 2021. http://d-nb.info/1230985409/34.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.

Libros sobre el tema "Hybrid nanomechanics"

1

Spies, Maria y Yann R. Chemla. Single-Molecule Enzymology: Nanomechanical Manipulation and Hybrid Methods. Elsevier Science & Technology Books, 2017.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Spies, Maria y Yann R. Chemla. Single-Molecule Enzymology: Nanomechanical Manipulation and Hybrid Methods. Elsevier Science & Technology Books, 2017.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.

Capítulos de libros sobre el tema "Hybrid nanomechanics"

1

Ganguli, Sabyasachi, Sergei Shenogin, Vikas Varshney y Ajit K. Roy. "Hybrid Nanomaterials for Flexible Electronics Interconnects". En Micro and Nanomechanics, Volume 5, 61–63. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63405-0_10.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Xavier, L. Francis, G. Ravichandran y N. Santhosh. "Optimization of Wear Rate on the Low-Cost Reinforced-Hybrid Aluminum Metal Matrix Composite". En Nanomechanics and Micromechanics, 121–34. Series statement: AAP research notes on nanoscience & nanotechnology: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780429322440-7.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Thomas, Philip A. "Nanomechanical Electro-Optical Modulator Based on Atomic Heterostructures". En Narrow Plasmon Resonances in Hybrid Systems, 65–82. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97526-9_5.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Jayich, Ania Bleszynski. "Spin-coupled Mechanical Systems". En Quantum Optomechanics and Nanomechanics, 277–306. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198828143.003.0007.

Texto completo
Resumen
A hybrid system composed of a spin coupled to a mechanical degree of freedom is interesting for several reasons: enhancing the functionality of the spin and of the mechanical system, and in the quantum and semiclassical regimes. This chapter gives an overview of some of the goals of spin-coupled mechanical systems and then introduces the nitrogen-vacancy (NV) centre, its energy level structure, and its sensitivity to external fields, with a discussion on what makes NVs exciting for hybrid quantum technologies and in particular integration with mechanical oscillators. Simple group theory arguments will be introduced to explain the NV’s energy level structure and its coupling to strain. It concludes with a discussion of different NV centre-mechanical coupling mechanisms, specifically magnetic- and strain-based ones, with realistic values for the coupling strength and protocols for coupling, as well as technical challenges to achieving a functional NV-mechanical coupled system, particularly in the quantum regime.
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Treutlein, Philipp. "Atom Optomechanics". En Quantum Optomechanics and Nanomechanics, 329–68. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198828143.003.0009.

Texto completo
Resumen
This chapter gives an introduction to optomechanics with ultracold atoms. The opening half deals with optomechanical atom–light interactions. Section 9.2 introduces atom trapping. Section 9.3 discusses the properties of trapped atoms as mechanical oscillators. Section 9.4 describes optomechanical interactions, treating the atoms as polarizable particles, a model used in section 9.5 to derive optomechanical coupling of atoms and a cavity field and briefly review cavity optomechanics experiments with atoms in the quantum regime. The second half deals with hybrid mechanical-atomic systems. We start with an overview of different coupling mechanisms, then focus on light-mediated interactions and derive the coupling of a membrane to an ensemble of laser-cooled atoms. Section 9.8 reviews experiments on sympathetic cooling of a membrane with cold atoms, with perspectives for mechanical quantum control discussed in section 9.9. Section 9.10 introduces the possibilities that arise if the mechanical oscillator is coupled to the atomic internal state.
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

"Nanomechanical Resonator Coupled to a Hybrid Nanostructure". En Generalized Optomechanics and Its Applications, 129–47. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814417044_0007.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Hybrid nanomechanics"

1

Venkateshvaran, Deepak. "Higher eigen mode imaging and nanomechanics of flexible electronic materials". En Organic and Hybrid Transistors XXII, editado por Oana D. Jurchescu y Iain McCulloch. SPIE, 2023. http://dx.doi.org/10.1117/12.2677326.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

LaHaye, Matthew. "Hybrid quantum systems composed of superconducting qubits, nanomechanics, and transmission line metamaterials". En Photonics for Quantum Workshop 2019. SPIE, 2021. http://dx.doi.org/10.1117/12.2609981.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Zhu, Ka-Di. "Optical Mass Sensing with Hybrid Nanomechanical Systems". En High Intensity Lasers and High Field Phenomena. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/hilas.2014.jw2a.71.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Lukin, Mikhail. "Hybrid nanophotonic and nanomechanical interfaces for spin qubits". En Laser Science. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/ls.2010.lwa1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Vamshi, G. Priya, B. S. Tina y V. Seena. "Polymer Based Hybrid Membrane-Flexure Nanomechanical Piezoresistive Sensor". En 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589806.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Clark, Genevieve, Hamza Raniwala, Matthew Koppa, Kevin Chen, Andrew Leenheer, Matthew Zimmerman, Mark Dong et al. "Nanoelectromechanical control of spin-photon interfaces in a hybrid quantum system on chip". En Frontiers in Optics. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/fio.2023.fm6b.3.

Texto completo
Resumen
We demonstrate nanomechanical strain control of tin vacancies in diamond nanostructures in a hybrid system-on-chip architecture based on piezo-actuated photonics. We show frequency tuning and acoustic control over 20 GHz and 2 GHz respectively, as well as on-chip active routing of color center single photon emission.
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Escudero, P., J. Yeste, R. Villa y M. Alvarez. "Low cost nanomechanical surfaces stress based sensors fabricated by hybrid materials". En SPIE Microtechnologies, editado por Luis Fonseca, Mika Prunnila y Erwin Peiner. SPIE, 2017. http://dx.doi.org/10.1117/12.2264893.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Pant, Rohit y Guoping Zhang. "Nanomechanical and Microstructural Characterization of a Hybrid Clay-Lime-Starch Composite". En Geo-Congress 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413272.276.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Pellegrino, L., N. Manca, A. Plaza, L. Cichetto, D. Marré, F. Maspero, S. Cuccurullo et al. "A Hybrid Superconductor/Nanomechanical Magnetic Field Detector for Biomagnetism*". En 2023 IEEE Nanotechnology Materials and Devices Conference (NMDC). IEEE, 2023. http://dx.doi.org/10.1109/nmdc57951.2023.10344075.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Liu, Yuncong, Yanan Wang, Xu-Qian Zheng, Qiang Lin y Philip X. L. Feng. "Nanomechanical and Optomechanical Coupling in Silicon Carbide / Hexagonal Boron Nitride Hybrid Resonator". En 2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers). IEEE, 2021. http://dx.doi.org/10.1109/transducers50396.2021.9495564.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
También puede estar interesado en las bibliografías ampliadas sobre el tema "Hybrid nanomechanics" para tipos de fuentes particulares:
Artículos de revistas
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía