Showing 1 - 20 results of 39 for search 'quantum and optimal diffraction', query time: 0.10s Refine Results
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    Real‐Time Self‐Optimization of Quantum Dot Laser Emissions During Machine Learning‐Assisted Epitaxy by Chao Shen, Wenkang Zhan, Shujie Pan, Hongyue Hao, Ning Zhuo, Kaiyao Xin, Hui Cong, Chi Xu, Bo Xu, Tien Khee Ng, Siming Chen, Chunlai Xue, Zhanguo Wang, Chao Zhao

    Published 2025-07-01
    “…In this work, in situ reflection high‐energy electron diffraction (RHEED) is integrated with machine learning (ML) to correlate the surface reconstruction with the photoluminescence (PL) of InAs/GaAs quantum dots (QDs), which serve as the active region of lasers. …”
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    Quantum chemical research of the molecular structure of 3,4-dicyanofuroxan by I. N. Kolesnikova, N. V. Lobanov, V. N. Lobanov, I. F. Shishkov

    Published 2023-05-01
    “…The study set out to determine the equilibrium parameters of the 3,4-dicyanofuroxan molecule by means of molecule geometry optimization by quantum chemistry methods, verify the adequacy of the methods used, and compare the obtained results with X-ray diffraction analysis (XRD) and gas electron diffraction (GED) data.Methods. …”
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    Effect of carbon quantum dots on the anticorrosive action of the tin coatings by Taiane Fíngolo Duarte, Victor Magno Paiva, Braulio Soares Archanjo, Clara Muniz da Silva de Almeida, Natasha Midori Suguihiro, Rodrigo José Corrêa, Emerson Schwingel Ribeiro, Eliane D'Elia

    Published 2025-01-01
    “…Carbon quantum dots or carbon dots (CDs) are a new class of nanomaterials with a nearly spherical shape and a size smaller than 10 nm. …”
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    Synthesis, optical, and photocatalytic properties of cellulose-derived carbon quantum dots by Shabnam Sheshmani, Mahan Mardali, Soheila Shokrollahzadeh, Yasamin Bide, Roya Tarlani

    Published 2025-05-01
    “…The superior photocatalytic performance is attributed to the synergistic effects of optimized particle size (enabling strong quantum confinement), abundant surface functional groups (promoting effective interaction with dye molecules), and enhanced light absorption capabilities (boosting photogenerated charge carrier production). …”
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    Benchmarking quantum chemical methods with X-ray structures via structure-specific restraints by Birger Dittrich, Rok Breznikar, Gianluca Santarossa, Pamela Whitfield, Henrik Moebitz

    Published 2025-07-01
    “…There is a need for fast, efficient and accurate solid-state structure optimization for imprecise crystal structures (`augmentation') for subsequent property prediction in the pharmaceutical industry. …”
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    Deterministic quantum dot cavity placement using hyperspectral imaging with high spatial accuracy and precision by Quirin Buchinger, Constantin Krause, Aileen Zhang, Giora Peniakov, Mohamed Helal, Yorick Reum, Andreas Theo Pfenning, Sven Höfling, Tobias Huber-Loyola

    Published 2025-07-01
    “…Here we show a method to achieve high accuracy and precision for deterministically placed cavities on the example of circular Bragg gratings on randomly distributed semiconductor quantum dots. We introduce periodic alignment markers for improved marker detection accuracy and investigate overall imaging accuracy achieving (9.1 ± 2.5) nm through image correction. …”
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    Efficient Degradation of Congo Red Under Ultrasonic Irradiation Using Carbon Quantum Dots /Cellulose Composites by Pang Yean Ling, Soh Christopher Chun Min, Lim Steven

    Published 2025-01-01
    “…In this study, carbon quantum dots (CQDs) and composites at various concentrations were successfully synthesized via a facile hydrothermal method. …”
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    Development and assessment of polyacrylamide-starch hydrogel nanocomposites with graphene quantum dots for targeted quercetin delivery to brain tumors by Pardis Ordoukhani, Mehrab Pourmadadi, Majid Abdouss

    Published 2025-06-01
    “…In this research, an innovative pH-sensitive hydrogel nanocomposite was engineered via physical cross-linking using a novel combination of polyacrylamide (PAM), starch (S), and graphene quantum dots (GQDs), serving as a promising nanocarrier for enhanced QC delivery. …”
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    MOCVD Grown InGaAs/InAlAs Quantum Cascade Lasers Emitting at 7.7 μm by Maciej Bugajski, Andrzej Kolek, Grzegorz Hałdaś, Włodzimierz Strupiński, Iwona Pasternak, Walery Kołkowski, Kamil Pierściński

    Published 2024-12-01
    “…For epitaxial process control, the High Resolution X-Ray Diffraction (HR XRD) and Transmission Electron Microscopy (TEM) were used to characterize the structural quality of the QCL samples. …”
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    Enhanced Optical Properties of Green‐Emitting InP Quantum Dots with Matched Junctions of the Core and Mn‐Doped Novel Shells by Akihito Okamoto, Shintaro Toda, Takumi Tsujihata, Takaki Kamada, Maowei Huang, Yusuke Hashimoto, Seiichi Isojima, Hirotake Kajii, Satoshi Seino, Tetsusei Kurashiki

    Published 2025-04-01
    “…A comprehensive investigation of the effect of Mn‐doping concentration reveals that optimal properties are developed at a 10% feed ratio, resulting in improved crystallinity, reduced interfacial defects, and enhanced quantum confinement. …”
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    Robust ternary system of corncob-derived carbon quantum dots/ ZnFe2O4/graphene oxide for wastewater treatment by Wajeeha Qayyum, Noor Tahir, Muhammad Zahid, Saima Noreen, Muhammad Yaseen, Abeer A. AlObaid, Qamar Abbas, Ghulam Mustafa

    Published 2025-04-01
    “…The physiochemical properties and microstructure of magnetic graphene oxide anchored over carbon quantum dots included Fourier Transform Infrared Spectroscopy, Scanning Electron Microscope/Energy Dispersive X-ray, X-ray photoelectron spectroscopy, X-ray diffraction and Ultraviolet–Visible Spectroscopy. …”
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    Development of co-doped ZnS-CdS quantum dots based composite sensor for the detection of cefixime (CXM) and tetracycline (TET), and application in real samples from local dairies by Shakiba Javaheri, Fatemeh Keshavarzi, Changiz Karami

    Published 2025-03-01
    “…This study presents a novel detection method utilizing zinc sulfide-cadmium sulfide/cobalt (ZnS-CdS/Co) quantum dots, characterized through scanning electron microscopy (SEM), photoluminescence (PL), energy dispersive X-ray (EDX), mapping, Line scan, Fourier-transform infrared spectroscopy (FT-IR) techniques, and X-ray diffraction (XRD). …”
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    New Tools in Heavy Metal Detection: Synthesis, Spectroscopic, and Quantum Chemical Characterization of Selected Water-Soluble Styryl Derivatives of Quinoline and 1,10-Phenanthrolin... by Jacek E. Nycz, Jolanta Kolińska, Nataliya Karaush-Karmazin, Tieqiao Chen, Maria Książek, Joachim Kusz

    Published 2025-06-01
    “…In designing optoelectronic materials, such as organic dyes, organic semiconductors, or electrochromic materials, controlling the rotation and isomerization of aryl groups can be crucial for optimizing their functionality.…”
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    Single-Crystal Diffuse Neutron Scattering Study of the Dipole-Octupole Quantum Spin-Ice Candidate Ce_{2}Zr_{2}O_{7}: No Apparent Octupolar Correlations Above T=0.05  K by E. M. Smith, R. Schäfer, J. Dudemaine, B. Placke, B. Yuan, Z. Morgan, F. Ye, R. Moessner, O. Benton, A. D. Bianchi, B. D. Gaulin

    Published 2025-04-01
    “…The insulating magnetic pyrochlore Ce_{2}Zr_{2}O_{7} has gained attention as a quantum spin-ice candidate with dipole-octupole character that arises from the crystal-electric-field ground-state doublet for the Ce^{3+} Kramers ion. …”
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    A Strain-Compensated InGaAs/InGaSb Type-II Superlattice Grown on InAs Substrates for Long-Wavelength Infrared Photodetectors by Hao Zhou, Chang Liu, Yiqiao Chen

    Published 2025-07-01
    “…Novel methodologies were developed to optimize the As and Sb flux growth conditions. The quality of the epitaxial layer was characterized using multiple analytical techniques, including differential interference contrast microscopy, atomic force microscopy, high-resolution X-ray diffraction, and high-resolution transmission electron microscopy. …”
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    New Insights Reached via Graded-Interfaces Modeling: How High-Power, High-Efficiency Mid-Infrared QCLs Work by Dan Botez, Suraj Suri, Huilong Gao, Thomas Grange, Jeremy D. Kirch, Luke J. Mawst, Robert A. Marsland

    Published 2025-01-01
    “…Graded-interfaces modeling unveils key features of high-power, high-efficiency quantum-cascade lasers (QCLs): direct resonant-tunneling injection from a prior-stage, low-energy state into the upper-laser (<i>ul</i>) level, over a wide (~50 nm) multiple-barrier region; and a new type of photon-induced carrier transport (PICT). …”
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    Challenges in modulation doping of n-type Ge/SiGe heterostructures: The role of epitaxial and thermal strain by E. Campagna, E. Talamas Simola, L. Di Gaspare, D. Marian, M. H. Zoellner, F. Berkmann, L. Baldassarre, M. Ortolani, G. Capellini, M. Virgilio, M. De Seta

    Published 2025-06-01
    “…N-type Ge-rich Ge/SiGe multi-quantum-wells on Si(001) substrates are a novel material system with great potential due to their compatibility with the CMOS standard. …”
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