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Articles de revues sur le sujet « Quantum nanostructures »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 19 juillet 2025

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1

Aseev, Aleksander Leonidovich, Alexander Vasilevich Latyshev, and Anatoliy Vasilevich Dvurechenskii. "Semiconductor Nanostructures for Modern Electronics." Solid State Phenomena 310 (September 2020): 65–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.310.65.

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Modern electronics is based on semiconductor nanostructures in practically all main parts: from microprocessor circuits and memory elements to high frequency and light-emitting devices, sensors and photovoltaic cells. Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) with ultimately low gate length in the order of tens of nanometers and less is nowadays one of the basic elements of microprocessors and modern electron memory chips. Principally new physical peculiarities of semiconductor nanostructures are related to quantum effects like tunneling of charge carriers, controlled changing

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Afshar, Elham N., Georgi Xosrovashvili, Rasoul Rouhi, and Nima E. Gorji. "Review on the application of nanostructure materials in solar cells." Modern Physics Letters B 29, no. 21 (2015): 1550118. http://dx.doi.org/10.1142/s0217984915501183.

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In recent years, nanostructure materials have opened a promising route to future of the renewable sources, especially in the solar cells. This paper considers the advantages of nanostructure materials in improving the performance and stability of the solar cell structures. These structures have been employed for various performance/energy conversion enhancement strategies. Here, we have investigated four types of nanostructures applied in solar cells, where all of them are named as quantum solar cells. We have also discussed recent development of quantum dot nanoparticles and carbon nanotubes

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Poempool, Thanavorn, Zon, Suwit Kiravittaya, et al. "GaSb and InSb Quantum Nanostructures: Morphologies and Optical Properties." MRS Advances 1, no. 23 (2015): 1677–82. http://dx.doi.org/10.1557/adv.2015.6.

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ABSTRACTGaSb/GaAs and InSb/GaAs material systems can create type-II quantum nanostructures which provide interesting electronic and optical properties such as having long carrier life time, low carriers-recombination rate, and emitting/absorbing low photon energy. These characteristics of type-II nanostructures can be applied for infrared or gas detection devices, for memory devices and even for novel intermediate band solar cells. In contrast, lattice mismatches of GaSb/GaAs and InSb/GaAs material system are 7.8% and 14.6%, respectively, which need some specific molecular beam epitaxial (MBE)

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Chen, Hongjun, and Lianzhou Wang. "Nanostructure sensitization of transition metal oxides for visible-light photocatalysis." Beilstein Journal of Nanotechnology 5 (May 23, 2014): 696–710. http://dx.doi.org/10.3762/bjnano.5.82.

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To better utilize the sunlight for efficient solar energy conversion, the research on visible-light active photocatalysts has recently attracted a lot of interest. The photosensitization of transition metal oxides is a promising approach for achieving effective visible-light photocatalysis. This review article primarily discusses the recent progress in the realm of a variety of nanostructured photosensitizers such as quantum dots, plasmonic metal nanostructures, and carbon nanostructures for coupling with wide-bandgap transition metal oxides to design better visible-light active photocatalysts

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Tai, Alan. "Quantum Well Model for Charge Transfer in Aperiodic DNA and Superlattice Sequences." Biophysica 4, no. 3 (2024): 411–41. http://dx.doi.org/10.3390/biophysica4030027.

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This study presents a quantum well model using the transfer matrix technique to analyze the charge transfer characteristics of nanostructure sequences in both DNA and superlattices. The unconfined state, or unbound state, above the quantum well is used to investigate carrier behaviors in a semiconductor nanostructure. These analytical approaches can be extended to enhance the understanding of charge transfer in DNA nanostructures with periodic and aperiodic sequences. Experimental validation was conducted through photoreflectance spectroscopy on nanostructures within the semiconductor superlat

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Shah, Rushil, Abhijit Saha, Zahraa Najah, et al. "Role of Quantum Dots and Nanostructures in Photovoltaic Energy Conversion." E3S Web of Conferences 552 (2024): 01096. http://dx.doi.org/10.1051/e3sconf/202455201096.

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Nanostructures and quantum dots have substantial effects on enhancing photovoltaic energy conversion efficiency, as evidenced in this comprehensive study. Materials that are nanostructured and nanosized particles are commonly used to address the urgent issues related to energy conversion. The use of nanostructured substances to address issues with energy and natural resources has garnered a lot of interest lately. Directional nanostructures in particular show promise for the conversion, collection, and storage of energy. Due to their unique properties, such as electrical conductivity, mechanic

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Paul, Neelima, Ezzeldin Metwalli, Yuan Yao, et al. "Templating growth of gold nanostructures with a CdSe quantum dot array." Nanoscale 7, no. 21 (2015): 9703–14. http://dx.doi.org/10.1039/c5nr01121c.

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The controlled gold sputtering on quantum dot arrays forms gold nanostructures exclusively on top of quantum dots by self-assembly. A real time observation of the gold nanostructure growth is enabled with grazing incidence small-angle X-ray scattering (GISAXS).

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Vysikaylo, P. I. "Quantum Size Effects Arising from Nanocomposites Physical Doping with Nanostructures Having High Electron Affinit." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 3 (96) (June 2021): 150–75. http://dx.doi.org/10.18698/1812-3368-2021-3-150-175.

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This article considers main problems in application of nanostructured materials in high technologies. Theoretical development and experimental verification of methods for creating and studying the properties of physically doped materials with spatially inhomogeneous structure on micro and nanometer scale are proposed. Results of studying 11 quantum size effects exposed to nanocomposites physical doping with nanostructures with high electron affinity are presented. Theoretical and available experimental data were compared in regard to creation of nanostructured materials, including those with i

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Douhan, Rahaf, Kirill Lozovoy, Andrey Kokhanenko, Hazem Deeb, Vladimir Dirko, and Kristina Khomyakova. "Recent Advances in Si-Compatible Nanostructured Photodetectors." Technologies 11, no. 1 (2023): 17. http://dx.doi.org/10.3390/technologies11010017.

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In this review the latest advances in the field of nanostructured photodetectors are considered, stating the types and materials, and highlighting the features of operation. Special attention is paid to the group-IV material photodetectors, including Ge, Si, Sn, and their solid solutions. Among the various designs, photodetectors with quantum wells, quantum dots, and quantum wires are highlighted. Such nanostructures have a number of unique properties, that made them striking to scientists’ attention and device applications. Since silicon is the dominating semiconductor material in the electro

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Prevenslik, Thomas. "Unphysical Heat Transfer by Molecular Dynamics." Applied Mechanics and Materials 184-185 (June 2012): 1446–50. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.1446.

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Molecular Dynamics (MD) simulations based on classical statistical mechanics allow the atom to have thermal heat capacity. Quantum mechanics (QM) differs in that the heat capacity of atoms in submicron nanostructures vanishes. Nevertheless, MD simulations of heat transfer in discrete nanostructures are routlinely performed and abound in the literature. Not only are discrete MD sumultions invalid by QM, but give unphysical results, e.g., thermal conducitvity in nanofluids is found to exceed standard mixing rules while in solid metal films depends on thickness. QM explains the unphysical results

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Piryatinski, Yuri P., Markiian B. Malynovskyi, Maryna M. Sevryukova, et al. "Mixing of Excitons in Nanostructures Based on a Perylene Dye with CdTe Quantum Dots." Materials 16, no. 2 (2023): 552. http://dx.doi.org/10.3390/ma16020552.

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Semiconductor quantum dots of the A2B6 group and organic semiconductors have been widely studied and applied in optoelectronics. This study aims to combine CdTe quantum dots and perylene-based dye molecules into advanced nanostructure system targeting to improve their functional properties. In such systems, new electronic states, a mixture of Wannier–Mott excitons with charge-transfer excitons, have appeared at the interface of CdTe quantum dots and the perylene dye. The nature of such new states has been analyzed by absorption and photoluminescence spectroscopy with picosecond time resolution

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Gupta, N., G. F. Alapatt, R. Podila, R. Singh, and K. F. Poole. "Prospects of Nanostructure-Based Solar Cells for Manufacturing Future Generations of Photovoltaic Modules." International Journal of Photoenergy 2009 (2009): 1–13. http://dx.doi.org/10.1155/2009/154059.

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We present a comprehensive review on prospects for one-, two-, or three-dimensional nanostructure-based solar cells for manufacturing the future generation of photovoltaic (PV) modules. Reducing heat dissipation and utilizing the unabsorbed part of the solar spectrum are the key driving forces for the development of nanostructure-based solar cells. Unrealistic assumptions involved in theoretical work and the tendency of stretching observed experimental results are the primary reasons why quantum phenomena-based nanostructures solar cells are unlikely to play a significant role in the manufactu

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Henini, Mohamed. "Quantum dot nanostructures." Materials Today 5, no. 6 (2002): 48–53. http://dx.doi.org/10.1016/s1369-7021(02)00639-9.

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Bagraev N. T., Kukushkin S. A., Osipov A. V., Klyachkin L. E., Malyarenko A. M., and Khromov V. S. "Terahertz emission from silicon carbide nanostructures." Semiconductors 56, no. 13 (2022): 2050. http://dx.doi.org/10.21883/sc.2022.13.53897.9709.

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For the first time, electroluminescence detected in the middle and far infrared ranges from silicon carbide nanostructures on silicon, obtained in the framework of the Hall geometry. Silicon carbide on silicon was grown by the method of substitution of atoms on silicon. The electroluminescence from the edge channels of nanostructures is induced due to the longitudinal drain- source current. The electroluminescence spectra obtained in the terahertz frequency range, 3.4, 0.12 THz, arise due to the quantum Faraday effect. Within the framework of the proposed model, the longitudinal current induce

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15

Ding, Y. H., V. Hongpinyo, Hery S. Djie, and Boon S. Ooi. "Nano-Scale Bandgap Engineering Using Nitrogen Implantation: Quantum-Well, Quantum-Dash and Quantum-Dot Nanostructures." Advanced Materials Research 31 (November 2007): 182–84. http://dx.doi.org/10.4028/www.scientific.net/amr.31.182.

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Nano-scale spatial wavelength engineering of quantum nanostructures using nitrogen ion-implantation induced intermixing has been developed for tuning the bandgap of quantum-well, quantum-dash-in-well, and quantum-dot nanostructures. High performance bandgap-tuned quantum-well and quantum-dash lasers fabricated using this technique has been demonstrated.

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Bocko, Jozef, and Pavol Lengvarský. "Application of Finite Element Method for Analysis of Nanostructures." Acta Mechanica et Automatica 11, no. 2 (2017): 116–20. http://dx.doi.org/10.1515/ama-2017-0018.

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AbstractThe paper deals with application of the finite element method in modelling and simulation of nanostructures. The finite element model is based on beam elements with stiffness properties gained from the quantum mechanics and nonlinear spring elements with force-displacement relation are gained from Morse potential. Several basic mechanical properties of structures are computed by homogenization of nanostructure, e.g. Young's modulus, Poisson's ratio. The problems connecting with geometrical parameters of nanostructures are considered and their influences to resulting homogenized quantit

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Vladimirova, Yulia V., and Victor N. Zadkov. "Quantum Optics in Nanostructures." Nanomaterials 11, no. 8 (2021): 1919. http://dx.doi.org/10.3390/nano11081919.

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This review is devoted to the study of effects of quantum optics in nanostructures. The mechanisms by which the rates of radiative and nonradiative decay are modified are considered in the model of a two-level quantum emitter (QE) near a plasmonic nanoparticle (NP). The distributions of the intensity and polarization of the near field around an NP are analyzed, which substantially depend on the polarization of the external field and parameters of plasmon resonances of the NP. The effects of quantum optics in the system NP + QE plus external laser field are analyzed—modification of the resonanc

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Alhalaili, Badriyah, Ahmad Al-Duweesh, Ileana Nicoleta Popescu, Ruxandra Vidu, Luige Vladareanu, and M. Saif Islam. "Improvement of Schottky Contacts of Gallium Oxide (Ga2O3) Nanowires for UV Applications." Sensors 22, no. 5 (2022): 2048. http://dx.doi.org/10.3390/s22052048.

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Interest in the synthesis and fabrication of gallium oxide (Ga2O3) nanostructures as wide bandgap semiconductor-based ultraviolet (UV) photodetectors has recently increased due to their importance in cases of deep-UV photodetectors operating in high power/temperature conditions. Due to their unique properties, i.e., higher surface-to-volume ratio and quantum effects, these nanostructures can significantly enhance the sensitivity of detection. In this work, two Ga2O3 nanostructured films with different nanowire densities and sizes obtained by thermal oxidation of Ga on quartz, in the presence a

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Kausar, Ayesha. "Graphene quantum dot for thermoplastic nanocomposites—Scope and opportunities." Characterization and Application of Nanomaterials 8, no. 2 (2025): 11484. https://doi.org/10.24294/can11484.

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Quantum dot can be seen as an amazing nanotechnological discovery, including inorganic semiconducting nanodots as well as carbon nanodots, like graphene quantum dots. Unlike pristine graphene nanosheet having two dimensional nanostructure, graphene quantum dot is a zero dimensional nanoentity having superior aspect ratio, surface properties, edge effects, and quantum confinement characters. To enhance valuable physical properties and potential prospects of graphene quantum dots, various high-performance nanocomposite nanostructures have been developed using polymeric matrices. In this concern,

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20

Rahman, Md Aziz Ar, Shukui Zhang, and Hani E. Elsayed-Ali. "Quantum efficiency enhancement in simulated nanostructured negative electron affinity GaAs photocathodes." Journal of Applied Physics 133, no. 2 (2023): 023105. http://dx.doi.org/10.1063/5.0130884.

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Nanostructured negative electron affinity GaAs photocathodes for a polarized electron source are studied using finite difference time domain optical simulation. The structures studied are nanosquare columns, truncated nanocones, and truncated nanopyramids. Mie-type resonances in the 700–800 nm waveband, suitable for generation of polarized electrons, are identified. At resonance wavelengths, the nanostructures can absorb up to 99% of the incident light. For nanosquare columns and truncated nanocones, the maximum quantum efficiency (QE) at 780 nm obtained from simulation is 27%, whereas for sim

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Prevenslik, Thomas. "Validity of Molecular Dynamics Heat Transfer by Quantum Mechanics." Advanced Materials Research 829 (November 2013): 803–7. http://dx.doi.org/10.4028/www.scientific.net/amr.829.803.

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MD is commonly used in computational physics to determine the atomic response of nanostructures. MD stands for molecular dynamics. With theoretical basis in statistical mechanics, MD relates the thermal energy of the atom to its momentum by the equipartition theorem. Momenta of atoms are derived by solving Newtons equations with inter-atomic forces derived by Lennard-Jones or L-J potentials. MD implicitly assumes the atom always has heat capacity as otherwise the momenta of the atoms cannot be related to their temperature. In bulk materials, the continuum is simulated by imposing PBC on an ens

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Adamek, Michał, Oleksandr Pastukh, Magdalena Laskowska, Agnieszka Karczmarska, and Łukasz Laskowski. "Nanostructures as the Substrate for Single-Molecule Magnet Deposition." International Journal of Molecular Sciences 25, no. 1 (2023): 52. http://dx.doi.org/10.3390/ijms25010052.

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Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules’ manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to th

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Giovannini, Tommaso, Luca Bonatti, Piero Lafiosca, et al. "Do We Really Need Quantum Mechanics to Describe Plasmonic Properties of Metal Nanostructures?" ACS Photonics 9 (September 1, 2022): 3025. https://doi.org/10.1021/acsphotonics.2c00761.

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Optical properties of metal nanostructures are the basis of several scientific and technological applications. When the nanostructure characteristic size is of the order of few nm or less, it is generally accepted that only a description that explicitly describes electrons by quantum mechanics can reproduce faithfully its optical response. For example, the plasmon resonance shift upon shrinking the nanostructure size (red-shift for simple metals, blue-shift for <em>d</em>-metals such as gold and silver) is universally accepted to originate from the quantum nature of the system. Here we show in

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Houver, S., A. Lebreton, T. A. S. Pereira, et al. "Giant optical nonlinearity interferences in quantum structures." Science Advances 5, no. 10 (2019): eaaw7554. http://dx.doi.org/10.1126/sciadv.aaw7554.

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Second-order optical nonlinearities can be greatly enhanced by orders of magnitude in resonantly excited nanostructures. These resonant nonlinearities continually attract attention, particularly in newly discovered materials. However, they are frequently not as heightened as currently predicted, limiting their exploitation in nanostructured nonlinear optics. Here, we present a clear-cut theoretical and experimental demonstration that the second-order nonlinear susceptibility can vary by orders of magnitude as a result of giant destructive, as well as constructive, interference effects in compl

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Lazarev, Mikhail. "Numerical study of valence band states evolution in Al_xGa_1-xAs [111] QDs systems." PeerJ Materials Science 6 (February 19, 2024): e32. http://dx.doi.org/10.7717/peerj-matsci.32.

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Quantum dots (QDs) are very attractive nanostructures from an application point of view due to their unique optical properties. Optical properties and valence band (VB) state character was numerically investigated with respect to the effects of nanostructure geometry and composition. Numerical simulation was carried out using the Luttinger–Kohn model adapted to the particular case of QDs in inverted pyramids. We present the source code of the 4-band Luttinger–Kohn model that can be used to model AlGaAs or InGaAs nanostructures. The work focuses on the optical properties of GaAs/AlGaAs [111] QD

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Zhang, Bo, Wenxu Xie, and Yong Xiang. "Development and Prospect of Nanoarchitectured Solar Cells." International Journal of Photoenergy 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/382389.

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This paper gives an overview of the development and prospect of nanotechnologies utilized in the solar cell applications. Even though it is not clearly pointed out, nanostructures indeed have been used in the fabrication of conventional solar cells for a long time. However, in those circumstances, only very limited benefits of nanostructures have been used to improve cell performance. During the last decade, the development of the photovoltaic device theory and nanofabrication technology enables studies of more complex nanostructured solar cells with higher conversion efficiency and lower prod

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Wei, Biao, Haijun Zhou, Guangxiang Li, and Bin Tang. "Numerical study on all-optical modulation characteristics of quantum cascade lasers." Beilstein Journal of Nanotechnology 13 (September 23, 2022): 1011–19. http://dx.doi.org/10.3762/bjnano.13.88.

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To explain the phenomenon of all-optical modulation of quantum cascade laser (QCL), and explore the physics in QCL’s gain medium which consists of multiple of dielectric nanostructures with high refractive index under light injection, we modified the 1½-period model to calculate values of electron population and lifetime in each subband which is separated by the nanostructures, optical gain, current and number of photons in the cavity of a mid-infrared QCL modulated with near-infrared optical injection. The results were consistent with an experiment, where the injected light increases the elec

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Bagraev N. T., Kukushkin S. A., Osipov A. V., Klyachkin L. E., Malyarenko A. M., and Khromov V. S. "Registration of terahertz irradiation with silicon carbide nanostructures." Semiconductors 55, no. 14 (2022): 2157. http://dx.doi.org/10.21883/sc.2022.14.53862.9620.

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The response to external terahertz (THz) irradiation from the silicon carbide nanostructures prepared by the method of substitution of atoms on silicon is investigated. The kinetic dependence of the longitudinal voltage is recorded at room temperature by varying the drain-source current in the device structure performed in a Hall geometry. In the frameworks of proposed model based on the quantum Faraday effect the incident radiation results in the appearance of a generated current in the edge channels with a change in the number of magnetic flux quanta and in the appearance of features in the

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Dev, B. N. "Quantum phenomena in nanostructures." Journal of Physics: Conference Series 1718 (January 2021): 012003. http://dx.doi.org/10.1088/1742-6596/1718/1/012003.

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Mitin, Vladimir V., Dmitry I. Sementsov, and Nizami Z. Vagidov. "Quantum mechanics for nanostructures." MRS Bulletin 37, no. 5 (2012): 531. http://dx.doi.org/10.1557/mrs.2012.113.

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Ipatova, I. P., A. Yu Maslov, and O. V. Proshina. "Polaron in quantum nanostructures." Surface Science 507-510 (June 2002): 598–602. http://dx.doi.org/10.1016/s0039-6028(02)01321-3.

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Bellessa, J., F. Carcenac, A. Izrael, H. Launois, and D. Mailly. "Nanostructures for quantum physics." Microelectronic Engineering 6, no. 1-4 (1987): 175–80. http://dx.doi.org/10.1016/0167-9317(87)90034-7.

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Jewasuwan, W., S. Panyakeow, and S. Ratanathammaphan. "The Formation of InP Ring-Shape Nanostructures on In_0.49Ga_0.51P Grown by Droplet Epitaxy." Advanced Materials Research 31 (November 2007): 158–60. http://dx.doi.org/10.4028/www.scientific.net/amr.31.158.

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We report on the fabrication of self-assembled InP ring-shape nanostructures on In0.49Ga0.51P by droplet molecular-beam epitaxy. The dependency of InP ring-shape nanostructural properties on substrate temperature and indium deposition rate is investigated by ex situ atomic force microscope (AFM). The nano-craters are formed when indium deposition at 120°C while the ring shape quantum-dot molecules are formed when indium deposition at 150°C or higher. The size, density and pattern of InP ring-shape nanostructures strongly depend on substrate temperature and indium deposition rate during indium

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Bakhsh, Allah, Iftikhar Hussain Gul, Ashari Maqsood, Shang Hsuan Wu, Ching Hsiang Chan, and Yia Chung Chang. "Effect of High Substrate Temperature on Morphology, Structural and Optical Properties of CdZnS Nanostructures." Materials Science Forum 886 (March 2017): 24–31. http://dx.doi.org/10.4028/www.scientific.net/msf.886.24.

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One-dimensional CdZnS nanostructures have been synthesized through the sublimation. Effect of high substrate temperature on morphology, structural and optical properties of these nanostructures has been studied. X-Ray diffraction peak intensity, lattice parameters, crystallite size decreased with an increase in substrate temperature. The morphology changed with the increase in the substrate temperature. Raman Spectroscopy confirmed the existence of constituent elements in CdZnS solid solution and an increase of Zn concentration with the rise in substrate temperature. The nanostructures exhibit

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Kvon, Ze Don. "Semiconductor Quantum Wells and Nanostructures." Nanomaterials 13, no. 13 (2023): 1924. http://dx.doi.org/10.3390/nano13131924.

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Semiconductor quantum wells and nanostructures have been the main quantum and classical physical objects in condensed matter physics for over half a century, since the discovery of the two-dimensional electron gas in silicon MOSFETs and size quantization in thin bismuth films [...]

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Mahler, Günter, and Rainer Wawer. "Quantum Networks: Dynamics of Open Nanostructures." VLSI Design 8, no. 1-4 (1998): 191–96. http://dx.doi.org/10.1155/1998/28384.

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The superposition principle makes quantum networks behave very differently from their classical counterparts: We discuss how local and non-local coherence are generated and how these may affect the function of composite systems. Numerical examples concern quantum trajectories, quantum noise and quantum parallelism.

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Slaber, N. M., and J. S. Kith. "Optical analysis of PVA/CdS nanostructure." Experimental and Theoretical NANOTECHNOLOGY 9, no. 1 (2025): 9–14. https://doi.org/10.56053/9.1.9.

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The optical properties of polyvinyl alcohol (PVA) matrix embedded with cadmium sulfide (CdS) nanostructures were investigated to understand their potential applications in optoelectronic devices. CdS nanoparticles were synthesized and uniformly dispersed within the PVA matrix using a solution-casting method. The structural and morphological characterization confirmed the formation of well-dispersed CdS nanostructures within the polymer matrix. UV-vis spectroscopy analysis revealed a significant blue shift in the absorption edge due to the quantum confinement effect of CdS nanoparticles. Photol

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Tadyszak, Krzysztof, Andrzej Musiał, Adam Ostrowski, and Jacek K. Wychowaniec. "Unraveling Origins of EPR Spectrum in Graphene Oxide Quantum Dots." Nanomaterials 10, no. 4 (2020): 798. http://dx.doi.org/10.3390/nano10040798.

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Carbon nanostructures are utilized in a plethora of applications ranging from biomedicine to electronics. Particularly interesting are carbon nanostructured quantum dots that can be simultaneously used for bimodal therapies with both targeting and imaging capabilities. Here, magnetic and optical properties of graphene oxide quantum dots (GOQDs) prepared by the top-down technique from graphene oxide and obtained using the Hummers’ method were studied. Graphene oxide was ultra-sonicated, boiled in HNO3, ultra-centrifuged, and finally filtrated, reaching a mean flake size of ~30 nm with quantum d

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Dr., Ihor Yurchyshyn, Potyak Volodymyr, Skrypnyk Vasyl, Kliuchevskyi Bohdan, and Petriichuk Vasyl. "Calculation of Electron Energy Spectrum of Quantum-Dimensional Structures." American Based Research Journal 7, no. 11 (2018): 18–27. https://doi.org/10.5281/zenodo.3456083.

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<em>It was studied a methodology to obtain the electron energy spectrum of a quantum well with infinitely high walls, an infinitely long cylindrical quantum wire, a superlattice of quantum wells and a stack of quantum dots. The specific examples of the spectra for nanostructures based on PbSe and PbS were provided. It was shown the possibility to use the results of calculation of the energy spectrum the simplest quantum-size structures for similar calculations in nanostructures of higher complexity and found the way to control the properties of a stack of quantum dots changing its geometric ch

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Ambardar, Sharad, Dang Nguyen, Grace Binder, Zachary W. Withers, and Dmitri V. Voronine. "Quantum Leap from Gold and Silver to Aluminum Nanoplasmonics for Enhanced Biomedical Applications." Applied Sciences 10, no. 12 (2020): 4210. http://dx.doi.org/10.3390/app10124210.

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Nanotechnology has been used in many biosensing and medical applications, in the form of noble metal (gold and silver) nanoparticles and nanostructured substrates. However, the translational clinical and industrial applications still need improvements of the efficiency, selectivity, cost, toxicity, reproducibility, and morphological control at the nanoscale level. In this review, we highlight the recent progress that has been made in the replacement of expensive gold and silver metals with the less expensive aluminum. In addition to low cost, other advantages of the aluminum plasmonic nanostru

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López-López, Máximo, Esteban Cruz-Hernández, Isaac Martínez-Velis, Juan Salvador Rojas-Ramírez, Manolo Ramirez-Lopez, and Álvaro Orlando Pulzara-Mora. "Self Assembly of semiconductor nanostructures." Respuestas 12, no. 2 (2016): 47–51. http://dx.doi.org/10.22463/0122820x.570.

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Abstract In this work we present the growth and characterization of GaAs self-assembled quantum wires (SAQWRs), and InAs self-assembled quantum dots (SAQDs) by molecular beam epitaxy on (631)-oriented GaAs substrates. Adatoms on the (631) crystal plane present a strong surface diffusion anisotropy which we use to induce preferential growth along one direction to produce SAQWRs. On the other hand, InAs SAQDs were obtained on GaAs(631) with SAQWRs by the Stransky–Krastanov (S-K) growth method. SAQDs grown directly on (631) substrates presented considerable fluctuations in size. We study the effe

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Groussin, B., M. Martinez Calderon, B. Marsh, and E. Granados. "Simulation of Plasmonic Effects in Nanostructured Copper Surfaces for Field-assisted Photoemission." Journal of Physics: Conference Series 2687, no. 3 (2024): 032034. http://dx.doi.org/10.1088/1742-6596/2687/3/032034.

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Abstract Plasmonics in photoemission have recently gained interest due to their effect on important electron beam parameters such as emittance or quantum efficiency (QE), among others. For example, the presence of nanostructures at the surface of the photoemissive medium can increase the probability of electron emission if their morphological features match that of the plasmonic resonance when laser-irradiated in an electron gun. To determine the optimal size and geometry of these nanostructures and predict the resulting field enhancement, we conducted parametric electromagnetic simulations of

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Kim, Dokyoung, Barry Arkles, Michael Sailor, Youlin Pan, and Zuidema. "Facile Surface Modification of Hydroxylated Silicon Nanostructures Utilizing Heterocyclic Silanes." Journal of the American Chemical Society 138, no. 46 (2016): 15106–9. https://doi.org/10.1021/jacs.6b08614.

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Heterocyclic silanes containing Si−N or Si−S bonds in the ring undergo a ring opening reaction with −OH groups at the surface of porous Si nanostructures to generate −SH or −NH functional surfaces, grafted via O−Si bonds. The reaction is substantially faster (0.5−2 h at 25 °C) and more efficient than hydrolytic condensation of trialkoxysilanes on similar hydroxy-terminated surfaces, and the reaction retains the open pore structure and photoluminescence of the quantum-confined silicon nanostructures. The chemistry is sufficiently

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SURAPRAPAPICH, S., S. THAINOI, C. LALIEW, S. KANJANACHUCHAI, and S. PANYAKEOW. "SELF-ASSEMBLED INDIUM-ARSENIDE ELONGATED NANOSTRUCTURE GROWN BY MOLECULAR BEAM EPITAXY." International Journal of Nanoscience 04, no. 02 (2005): 253–59. http://dx.doi.org/10.1142/s0219581x05003012.

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Self-assembled InAs elongated nanostructures were fabricated by continuous processing steps, starting from self-assembling of quantum dots, thin capping over the quantum dots to induce an anisotropic strain field, and to anneal the quantum dots in the molecular-beam-epitaxy machine. In-situ RHEED observations at each processing step were studied and confirmed by ex-situ AFM images of the surface morphology. The elongated nanostructures were demonstrated tobe templates for chains of uniform quantum dots.

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Mehtiyeva, Kh Z., I. R. Amiraslanov, and Z. S. Aliev. "Advancements in top-down synthesis of topological insulator nanoparticles: a brief review." TRANSACTIONS OF AZERBAIJAN NATIONAL ACADEMY OF SCIENCES PHYSICS AND ASTRONOMY XLV, no. 2 (2025): 58–66. https://doi.org/10.70784/azip.4.2025.02.058.

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cThis review explores the synthesis, structural characterization, and thermoelectric performance of layered topological insulator nanostructures. It compares bottom-up and top-down approaches, emphasizing ball milling as an effective method for fabricating nanostructured chalcogenides. While Bi₂Te₃-based materials have been extensively studied, no synthesis attempts for ternary homologous phases n(AIVBVI)•m(AV2BVI3) exist. The review highlights challenges and prospects in optimizing these materials for thermoelectric and quantum applications.

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Panyakeow, Somsak. "Quantum Nanostructures by Droplet Epitaxy." Engineering Journal 13, no. 1 (2009): 51–56. http://dx.doi.org/10.4186/ej.2009.13.1.51.

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Barabanenkov, Yuri N., Sergej A. Nikitov, and Mikhail Yu Barabanenkov. "Quantum fluctuations in magnetic nanostructures." Uspekhi Fizicheskih Nauk 189, no. 01 (2018): 85–94. http://dx.doi.org/10.3367/ufnr.2018.07.038405.

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Wang, J. S., J. Wang, and J. T. Lü. "Quantum thermal transport in nanostructures." European Physical Journal B 62, no. 4 (2008): 381–404. http://dx.doi.org/10.1140/epjb/e2008-00195-8.

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Chakraborty, Tapash, and Vadim M. Apalkov. "Quantum cascade transitions in nanostructures." Advances in Physics 52, no. 5 (2003): 455–521. http://dx.doi.org/10.1080/0001873031000119619.

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Antoniou, I., E. Karpov, and G. Pronko. "Non-locality and quantum nanostructures." Chaos, Solitons & Fractals 17, no. 2-3 (2003): 277–81. http://dx.doi.org/10.1016/s0960-0779(02)00352-1.

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