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Rapid,noncontact,sensitive,and semiquantitative characterization of buffered hydrogen-fluoridetreated silicon wafer surfaces by terahertz emission spectroscopy

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Light(Science & Applications) 2022年第12期11卷 2982-2993页

作者： Dongxun Yang Abdul Mannan Fumikazu Murakami masayoshi tonouchi Institute of Laser Engineering Osaka University 2-6 YamadaokaSuitaOsaka 565-0871Japan

Advances in modern semiconductor integrated circuits have always demanded faster and more sensitive analytical methods on a large-scale *** surface of wafers is fundamentally essential to start building circuits,and quantitative measures of the surface potential,defects,contamination,passivation quality,and uniformity are subject to *** present study provides a new approach to access those by means of terahertz(THz)emission *** femtosecond laser illumination,THz radiation,which is sensitive to the surface electric fields of the wafer,is ***,we systematically research the THz emission properties of silicon surfaces under different surface conditions,such as the initial surface with a native oxide layer,a fluorine-terminated surface,and a hydrogenterminated ***,a strong doping concentration dependence of the THz emission amplitude from the silicon surface has been revealed in different surface conditions,which implies a semiquantitative connection between the THz emission and the surface band bending with the surface ***-induced THz emission spectroscopy is a promising method for evaluating local surface properties on a wafer scale.

关键词： terminated fluoride fluorine

Study of photoexcited-carrier dynamics in GaAs photoconductive switches using dynamic terahertz emission microscopy

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Photonics Research 2016年第3期4卷 9-15页

作者： Hironaru Murakami Shogo Fujiwara Iwao Kawayama masayoshi tonouchi Institute of Laser Engineering Osaka University

We propose dynamic terahertz(THz) emission microscopy(DTEM) to visualize temporal–spatial dynamics of photoexcited carriers in electronic materials. DTEM utilizes THz pulses emitted from a sample by probe pulses irradiated after pump pulse irradiation to perform time-resolved two-dimensional mapping of the THz pulse emission, reflecting various carrier dynamics. Using this microscopy, we investigated carrier dynamics in the gap region of low-temperature-grown Ga As and semi-insulating Ga As photoconductive switches of the identical-dipole type. The observed DTEM images are well explained by the change in the electric potential distribution between the electrodes caused by the screening effect of the photoexcited electron-hole pairs.

关键词： Ga Study of photoexcited-carrier dynamics in GaAs photoconductive switches using dynamic terahertz emission microscopy As THz

Terahertz Time-Domain Spectroscopy to Identify and Evaluate Anomer in Lactose

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American Journal of Analytical Chemistry 2013年第12期4卷 756-762页

作者： Satoshi Yamauchi Sakura Hatakeyam Yoh Imai masayoshi tonouchi Department of Biomolecular Functional Engineering Ibaraki University Hitachi Japan Department of Electric and Electronic Engineering Ibaraki University Hitachi Japan Institute of Laser Engineering Osaka University Osaka Japan

Lactose powder consisting of α-D-lactose monohydrate and anhydrous β-D-lactose was nondestructively and quantitatively evaluated by transmission-type Terahertz time-domain spectroscopy (THz-TDS). An absorption with peak at 39.7 cm-1 (1.19 THz) was assigned to be derived from anhydrous β-D-lactose, in addition to the absorptions due to α-D-lactose monohydrate with peak at 17.1 cm-1 (0.53 THz) and 45.6 cm-1 (1.37 THz). After deconvolution of the spectra using Lorentzian, integrated intensities of the absorptions with peak at 39.7 cm-1 and 45.6 cm-1 were uniquely dependent on the weight composition ratio of the α-and β-lactose powder. As a result, the net molar-ratio of the α-and β-lactose in lactose powder could be precisely evaluated by the integrated intensity ratio. Further, anomer content in lactose powder extracted from lactose solution was evaluated and the refined and unrefined features were shown by the evaluation method.

关键词： THz-TDS Lactose-Powder Anomer α-Lactose β-Lactose

Thickness Dependence of Dielectric Characteristics of SrTiO3Thin Films on MgAl2O4Substrates

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Advances in Materials Physics and Chemistry 2013年第1期3卷 58-61页

作者： Ryuhei Kinjo Iwao Kawayama Hironaru Murakami masayoshi tonouchi Institute of Laser Engineering Osaka University Osaka Japan.

SrTiO3 (STO) thin films of different thicknesses were deposited on MgAl2O4 (MAO) substrates to investigate the in-plane strain effect on the soft-mode frequency of the STO films. X-ray reciprocal space mapping (X-RSM) results indicate that there was no relaxation of the in-plane lattice strain of the STO films on MAO. Shifts in the soft-mode frequencies with a decrease in the film thickness were observed using terahertz time-domain spectroscopy (THz-TDS). However, despite the larger lattice mismatch between STO and MAO than that between STO and DyScO3 (DSO), the shifts in the soft-mode frequencies of the STO films on MAO were smaller than those on DSO. The results indicate that the soft-mode frequencies of the STO films on MAO are affected by the c-axis (out-of-plane) lengths.

关键词： Strontium Titanate Ferroelectric Soft Mode Thin Film Strain Effect

Simple procedure for assessing diffuse subarachnoid hemorrhage successfully created using filament perforation method in mice

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Animal Models and Experimental Medicine 2024年第1期7卷 77-81页

作者： Tatsushi Mutoh Ryota Tochinai Hiroaki Aono masayoshi Kuwahara Yasuyuki Taki Tatsuya Ishikawa Department of Surgical Neurology Research Institute for Brain and Blood VesselsAkita Cerebrospinal and Cardiovascular CenterAkitaJapan Department of Aging Research and Geriatric Medicine Institute of DevelopmentAging and CancerTohoku UniversitySendaiJapan Department of Veterinary Pathophysiology and Animal Health Graduate School of Agriculture and Life SciencesThe University of TokyoTokyoJapan

The murine model of subarachnoid hemorrhage(SAH)is a valuable experimental tool for investigating molecular and cellular mechanisms,and the endovascular filament perforation technique can be used to simulate prominent pathophysiological features observed after human SAH;however,current validation methods for assessing an appropriate SAH model are ***,we introduce a simple procedure for se-lecting a mouse model of diffuse *** was induced in 24 mice using a standard filament perforation *** confirming survival at 24 h,SAH was scored 0-1 based on T2*-weighted images on whole-brain magnetic resonance imaging(MRI)and visual surveillance of the cisterna magna(CM)through the dura *** CM-based SAH grading correlated well with a reference parameter defined by extracted brain(r^(2)=0.53,p<0.0001).The receiver operating characteristic curve revealed a sensi-tivity of 85%and a specificity of 91%for detecting diffuse SAH,with a similar area under the curve(0.89±0.06[standard error of the mean])as the MRI-based grading(0.72±0.10,p=0.12).Our data suggest that confirming an SAH clot in the CM is a valuable way to select a clinically relevant diffuse SAH model that can be used in future experimental studies.

关键词： cisterna magna clot distribution filament perforation mouse model subarachnoid hemorrhage

上古汉语否定词“不”“弗”演变补论——兼论“不”分勿切的读音来源

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语言学论丛 2024年第2期 96-106页

作者：户内俊介日本大学日本1568550东京

本文主要讨论上古汉语的否定词“不”与“弗”,重在利用战国秦汉时期的出土文献和传世文献,揭示上古各个时期的“不”与“弗”的分合演变:在先秦时期,“弗”是“不”加前置宾语代词“之”的合音词,然而在两汉时期,代词宾语前置现象减少... 详细信息

本文主要讨论上古汉语的否定词“不”与“弗”,重在利用战国秦汉时期的出土文献和传世文献,揭示上古各个时期的“不”与“弗”的分合演变:在先秦时期,“弗”是“不”加前置宾语代词“之”的合音词,然而在两汉时期,代词宾语前置现象减少,代词宾语“之”也逐渐式微,同时“不”“弗”的功能接近,导致“弗”字的语源渐渐被忘却,“弗”不再被视为“不+之”的合音,而是成为一个带有强调语气的单纯否定词。本文还对“不”获得分勿切一读的原因提出了自己的看法。

关键词：上古汉语否定词不弗入声叶氏周期

Superfunctional high-entropy alloys and ceramics by severe plastic deformation

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Rare Metals 2023年第10期42卷 3246-3268页

作者： Parisa Edalati masayoshi Fuji Kaveh Edalati Department of Life Science and Applied Chemistry Nagoya Institute of TechnologyTajimi507-0071Japan Advanced Ceramics Research Center Nagoya Institute of TechnologyTajimi507-0071Japan WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER) Kyushu UniversityFukuoka819-0395Japan Mitsui Chemicals Inc.—Carbon Neutral Research Center(MCI-CNRC)Kyushu UniversityFukuoka819-0395Japan

High-entropy alloys and ceramics containing at least five principal elements have recently received high attention for various mechanical and functional *** application of severe plastic deformation(SPD),particularly the high-pressure torsion method,combined with the CALPHAD(calculation of phase diagram) and first-principles calculations resulted in the development of numerous superfunctional high-entropy materials with superior properties compared to the normal functions of engineering *** article reviews the recent advances in the application of SPD to developing superfunctional high-entropy *** superfunctional properties include(ⅰ) ultrahigh hardness levels comparable to the hardness of ceramics in high-entropy alloys,(ⅱ) high yield strength and good hydrogen embrittlement resistance in high-entropy alloys;(ⅲ) high strength,low elastic modulus,and high biocompatibility in high-entropy alloys,(ⅳ) fast and reversible hydrogen storage in high-entropy hydrides,(ⅴ) photovoltaic performance and photocurrent generation on high-entropy semiconductors,(ⅵ) photocatalytic oxygen and hydrogen production from water splitting on high-entropy oxides and oxynitrides,and(ⅶ)CO_(2) photoreduction on high-entropy *** findings introduce SPD as not only a processing tool to improve the properties of existing high-entropy materials but also as a synthesis tool to produce novel high-entropy materials with superior properties compared with conventional engineering materials.

关键词： Multi-principal element alloys(MPEAs) High-entropy alloys(HEAs) High-entropy ceramics(HECs) High-entropy oxides(HEOs) Ultrafine-grained(UFG)microstructure High-pressure torsion(HPT)

Drug-induced lung injury caused by acetaminophen in a Japanese woman:A case report

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World Journal of Clinical Cases 2022年第27期10卷 9936-9944页

作者： masayoshi Fujii Tsuneaki Kenzaka Department of Internal Medicine Toyooka Public HospitalToyooka 668-8501Japan Department of Internal Medicine Hyogo Prefectural Tamba Medical CenterTamba 669-3495Japan Division of Community Medicine and Career Development Kobe University Graduate School of MedicineKobe 652-0032Japan

BACKGROUND All drugs have the potential to cause drug-induced lung injury both during and after drug *** has been reported to cause druginduced lung injury,although this is extremely ***,we present an extremely rare case of acetaminophen-induced *** SUMMARY A healthy 35-year-old Japanese woman visited a neighborhood clinic with complaints of fever and malaise following a tick *** treatment included1,500 mg acetaminophen(Caronal^(?)) and subsequently minocycline(200 mg) and acetaminophen(2,000 mg;Caronal^(?)) daily when her condition did not improve;the patient was eventually *** patient’s chest computed tomography(CT) revealed consolidation and ground-glass opacities in the right middle and lower *** was shifted to sulbactam/***,her fever did not improve during follow-up,and her chest CT revealed extensive ground-glass opacities in the right middle and lower lobes and thick infiltrative shadows in the bilateral basal ***-induced lung injury was suspected;hence,acetaminophen was *** fever resolved immediately,and inflammatory response and respiratory imaging findings improved.A drug-induced lymphocyte stimulation test was performed against acetaminophen(Caronal^(?)),and significant proliferation of lymphocytes was noted only for acetaminophen(stimulation index,2.1).CONCLUSION Even common drugs such as over-the-counter drugs can cause drug-induced lung damage.

关键词： Acetaminophen Computed tomography Pneumonia Fever Tick bite Case report

A Quantum Tanimoto Coefficient Fidelity for Entanglement Measurement

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IEEE/CAA Journal of Automatica Sinica 2023年第2期10卷 439-450页

作者： Yangyang Zhao Fuyuan Xiao masayoshi Aritsugi Weiping Ding the School of Big Data and Software Engineering Chongqing UniversityChongqing 401331China IEEE the Faculty of Advanced Science and Technology Kumamoto UniversityKumamoto 860-8555Japan the School of Information and Technology Nantong UniversityNantong 223019China

Fidelity plays an important role in quantum information processing,which provides a basic scale for comparing two quantum *** present,one of the most commonly used fidelities is Uhlmann-Jozsa(U-J)***,U-J fidelity needs to calculate the square root of the matrix,which is not trivial in the case of large or infinite density ***,U-J fidelity is a measure of overlap,which has limitations in some cases and cannot reflect the similarity between quantum states ***,a novel quantum fidelity measure called quantum Tanimoto coefficient(QTC)fidelity is proposed in this *** other existing fidelities,QTC fidelity not only considers the overlap between quantum states,but also takes into account the separation between quantum states for the first time,which leads to a better performance of ***,we discuss the properties of the proposed QTC *** fidelity is compared with some existing fidelities through specific examples,which reflects the effectiveness and advantages of QTC *** addition,based on the QTC fidelity,three discrimination coefficients d_(1)^(QTC),d_(2)^(QTC),and d_^(3)^(QTC)are defined to measure the difference between quantum *** is proved that the discrimination coefficient d_(3)^(QTC)is a true ***,we apply the proposed QTC fidelity-based discrimination coefficients to measure the entanglement of quantum states to show their practicability.

关键词： Distance measure entanglement measurement fidelity measure quantum Tanimoto coefficient(QTC) similarity measure uncertainty