Pressure and Temperature Induced Non-Linear Optical Properties in a Narrow Band Gap Quantum Dot

Narayanan, M.; Peter, A. John

doi:10.1166/qm.2012.1005

Cited by 74 publications

(60 citation statements)

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“…The optical properties of QDs have been reported to be pressure-and straindependent as a result of changes in their bandgap with particle size. 8,9 Therefore, QDs can potentially be used as sensor materials for investigating the time-resolved mesoscale effects of shock-compression of highly heterogeneous materials, including compacts of inert or reactive powders, in order to obtain unprecedented information about local particle or ensemble behavior, as well as the dynamics of the surrounding materials during high-strain-rate or shockcompression loading.…”

Section: Introductionmentioning

confidence: 99%

Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy

Kang

Банишев

Lee

et al. 2016

Journal of Applied Physics

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Articles you may be interested inTemperature-sensitive photoluminescent CdSe-ZnS polymer composite film for lock-in photothermal characterization J. Appl. Phys. 119, 224902 (2016) The nanometer size of CdTe quantum dots (QDs) and their unique optical properties, including size-tunable narrow photoluminescent emission, broad absorption, fast photoluminescence decay, and negligible light scattering, are ideal features for spectrally tagging the shock response of localized regions in highly heterogeneous materials such as particulate media. In this work, the timeresolved laser-excited photoluminescence response of QDs to shock-compression was investigated to explore their utilization as mesoscale sensors for pressure measurements and in situ diagnostics during shock loading experiments. Laser-driven shock-compression experiments with steady-state shock pressures ranging from 2.0 to 13 GPa were performed on nanocomposite films of CdTe QDs dispersed in a soft polyvinyl alcohol polymer matrix and in a hard inorganic sodium silicate glass matrix. Time-resolved photoluminescent emission spectroscopy was used to correlate photoluminescence changes with the history of shock pressure and the dynamics of the matrix material surrounding the QDs. The results revealed pressure-induced blueshifts in emitted wavelength, decreases in photoluminescent emission intensity, reductions in peak width, and matrix-dependent response times. Data obtained for these QD response characteristics serve as indicators for their use as possible time-resolved diagnostics of the dynamic shock-compression response of matrix materials in which such QDs are embedded as in situ sensors. Published by AIP Publishing.

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Section: Introductionmentioning

confidence: 99%

Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy

Kang

Банишев

Lee

et al. 2016

Journal of Applied Physics

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“…[28][29][30][31][32][33][34][35][36][37] Quantum mechanics of graphene nanodevices should be included in further work to reveal the structural and electronic properties of unusual carbon nanostructures, the electron transport properties, and the influence of electric and magnetic fields. [38][39][40][41][42][43][44][45][46][47][48][49] …”

Section: Discussionmentioning

confidence: 99%

Molecular Dynamics Simulation on Asymmetric Oscillations of Graphene Nanoribbon

Lee¹,

Lee²,

Kang³

2013

Jnl of Comp & Theo Nano

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We investigated a both-side clamped graphene-ribbon resonator by using classical molecular dynamics simulation. Dynamic features of the graphene-resonator were analyzed by the variations of its center displacement, its edge tension, the kinetic energy, and its center velocity. Especially the trace of the tension variation gave very important information to get the dynamic feature of the graphene resonator. Even though the vibration of the displacement was slightly asymmetrical due to its harmonic motions, the graphene resonator worked in stable. The effective spring constant of the graphene resonator in this work was in good agreement with the previous experiments. Such ultra-high frequency graphene resonators will facilitate the development of fast scanning probe microscopes, resonant force microscopes, mechanical supercomputers, ultrahigh frequency tuners, and nanodevices for high-frequency signal processing and biological imaging.

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“…The original bacterial foraging optimization (BFO) algorithm is one of the state-of-the-art evolutionary algorithms, [13][14][15] which consists of three principal mechanisms, namely chemotaxis, reproduction, and elimination-dispersal. We briefly describe each of these processes as follows:…”

Section: Bfo Modelmentioning

confidence: 99%

Robot Path Planning Using Bacterial Foraging Algorithm

Liu¹,

Niu²,

Chen³

et al. 2013

Jnl of Comp & Theo Nano

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The goal of the robot path planning problem is to determine an optimal collision-free path for a mobile robot between a start and a target point in an environment surrounded by obstacles. Optimal collision-free trajectory planning for mobile robot is always a major issue in robotics due to the necessity for the robots' course of movement. In recent years, as the emergence of another member of the swarm intelligence family-bacterial foraging optimization (BFO), the bacterial foraging strategy has attracted a great deal of interests. In this work, the path planning problem is approached by the mobile robot that mimics the foraging strategy of BFO algorithm. The objective is to minimize the path length and the number of turns without colliding with an obstacle. In the simulation studies, two test scenarios of static environment with different obstacle distribution are adopted to evaluate the performance of the proposed method. Simulation results show that our method is able to generate a collision-free path in complex environment.

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Pressure and Temperature Induced Non-Linear Optical Properties in a Narrow Band Gap Quantum Dot

Cited by 74 publications

References 0 publications

Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy

Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy

Molecular Dynamics Simulation on Asymmetric Oscillations of Graphene Nanoribbon

Robot Path Planning Using Bacterial Foraging Algorithm

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