Search Results - "Koichi, Yamaguchi"
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Demonstration of in-plane miniband formation in InAs/InAsSb ultrahigh-density quantum dots by analysis of temperature dependence of photoluminescence
Published in Japanese Journal of Applied Physics (01-10-2022)“…Abstract Self-assembled InAs/InAsSb ultrahigh-density quantum dots (UHD QDs) were grown on GaAs(001) substrate by molecular beam epitaxy. The QD density was…”
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Intermittent growth for InAs quantum dot on GaAs(001)
Published in Journal of crystal growth (01-12-2020)“…•We perform the intermittent growth of InAs quantum dots on GaAs(001) at 500 °C.•QDs nucleation was observed by STMBE where in situ STM equipped within MBE…”
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Self-formation of InAs/InGaAsSb type-II superlattice structures on InP substrates by MBE and their application to mid-infrared LEDs
Published in AIP advances (01-08-2022)“…InAs/InGaAsSb type-II superlattice structures (SLSs) were spontaneously formed by the molecular beam epitaxy of InAs/GaAs0.86Sb0.14 SLSs on InP substrates. The…”
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Coarsening process of high-density InAs quantum dots on Sb-irradiated GaAs
Published in Japanese Journal of Applied Physics (01-04-2018)“…High-density InAs quantum dots were grown on Sb-irradiated GaAs(001) by MBE. From InAs coverage and Sb irradiation time (SIT) dependences, the coarsening…”
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Growth Process and Photoluminescence Properties of In‐Plane Ultrahigh‐Density InAs Quantum Dots on InAsSb/GaAs(001)
Published in physica status solidi (b) (01-04-2018)“…InAs is grown on InAsSb/GaAs(001) by molecular beam epitaxy (MBE). At the initial growth of InAs, elongated small two‐dimensional (2D) islands are formed on…”
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Postgrowth Tuning of the Bandgap of Single-Layer Molybdenum Disulfide Films by Sulfur/Selenium Exchange
Published in ACS nano (27-05-2014)“…We demonstrate bandgap tuning of a single-layer MoS2 film on SiO2/Si via substitution of its sulfur atoms by selenium through a process of gentle sputtering,…”
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Quantum Dot Phase Transition Simulation with Hybrid Quantum Annealing via Metropolis-Adjusted Stochastic Gradient Langevin Dynamics
Published in Advances in condensed matter physics (11-04-2022)“…We report a hybrid quantum-classical simulation approach for simulating the optical phase transition observed experimentally in the ultrahigh-density type-II…”
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Effects of Using a Video-Sharing Application on Multidisciplinary Staff During Pre-discharge Home Assessment Visits for Elderly Hospitalized Patients
Published in YONAGO ACTA MEDICA (2023)“…[ABSTRACT] [Background] Pre-discharge home assessment visits for elderly hospitalized patients are conducted by the hospital staff to ensure a smooth…”
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A Family Case of COVID-19 Pneumonia with Different Chest CT Features and Duration of SARS-CoV-2 Shedding: a Case Report from Japan
Published in Japanese Journal of Infectious Diseases (22-11-2021)“…Coronavirus disease 2019 (COVID-19) pneumonia in children characteristically has a milder clinical presentation, with milder inflammatory biomarkers and…”
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Molecular beam deposition of high-density InAs quantum dots on SiOx films
Published in Japanese Journal of Applied Physics (01-06-2019)“…InAs quantum dots (QDs) were grown on SiOx films by molecular beam deposition (MBD), and then an SiOx capping layer was deposited by rf magnetron sputtering…”
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Long-term safety, efficacy, pharmacokinetics and pharmacodynamics of omalizumab in children with severe uncontrolled asthma
Published in Allergology international (01-01-2017)“…Omalizumab is effective and well-tolerated in children with moderate to severe allergic asthma. However, the effects of long-term treatment with omalizumab in…”
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Clinical features associated with the presence of anti-Ro52 and anti-Ro60 antibodies in Jo-1 antibody-positive anti-synthetase syndrome
Published in Frontiers in immunology (04-06-2024)“…Anti-SSA antibodies target two unrelated proteins, Ro52 (E3 ligase) and Ro60 (RNA binding protein). Previous studies indicate that anti-Ro52 antibodies are…”
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Growth Process and Photoluminescence Properties of In‐Plane Ultrahigh‐Density InAs Quantum Dots on InAsSb/GaAs(001) (Phys. Status Solidi B 4/2018)
Published in physica status solidi (b) (01-04-2018)“…In‐plane ultrahigh‐density InAs quantum dots (QDs) were grown by Oikawa et al. (article no. 1700307) on an InAsSb wetting layer (WL) on GaAs(001) substrate by…”
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14
Optical transition and carrier relaxation in a type-II InAs/GaAsSb quantum dot layer
Published in Japanese Journal of Applied Physics (01-01-2019)“…In-plane ultrahigh-density InAs quantum dots (QDs) were grown on the GaAsSb buffer layer by molecular beam epitaxy. Photoluminescence (PL) properties of the…”
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15
Decadal–centennial-scale solar-linked climate variations and millennial-scale internal oscillations during the Early Cretaceous
Published in Scientific reports (19-12-2022)“…Understanding climate variability and stability under extremely warm ‘greenhouse’ conditions in the past is essential for future climate predictions. However,…”
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Low sunlight concentration properties of InAs ultrahigh-density quantum-dot solar cells
Published in Japanese Journal of Applied Physics (01-07-2019)“…InAs ultrahigh-density quantum-dot (UHD-QD) solar cells with type-I GaAs or type-II GaAsSb capping layers were fabricated by molecular beam epitaxy. The solar…”
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Omalizumab in Japanese children with severe allergic asthma uncontrolled with standard therapy
Published in Allergology international (01-10-2015)“…Omalizumab has demonstrated clinical benefits in children with moderate to severe allergic asthma. However, no studies have been performed in Japanese…”
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Thrombomodulin for acute exacerbations of idiopathic pulmonary fibrosis: A proof of concept study
Published in Pulmonary pharmacology & therapeutics (01-12-2014)“…Abstract Introduction The mortality of acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) is high. Anticoagulation therapy (recombinant human soluble…”
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Experimental demonstration of energy-transfer ratchet intermediate-band solar cell
Published in Communications physics (01-03-2021)“…A detailed balance calculation reveals an extremely high efficiency of 63.2% for intermediate-band solar cells (IBSCs) under maximum sunlight concentration…”
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Ultrafast inverse design of quantum dot optical spectra via a joint TD-DFT learning scheme and deep reinforcement learning
Published in AIP advances (01-11-2022)“…Here, we report a case study on inverse design of quantum dot optical spectra using a deep reinforcement learning algorithm for the desired target optical…”
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