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从高效蓝光二极管到激光照明

科技导报 2019年第2期37卷 34-35页

作者：中村修二美国加州大学美国国家工程院

我来自日本,出生于伊方町,毕业于德岛大学,这是当地一家非常小的大学,并不像北京大学、清华大学这么有名。大学毕业之后,我加入一家只有100名员工的公司。我负责蓝色发光二极管(LED)研发方面的工作,这项工作非常有意思。在研发过程中,... 详细信息

我来自日本,出生于伊方町,毕业于德岛大学,这是当地一家非常小的大学,并不像北京大学、清华大学这么有名。大学毕业之后,我加入一家只有100名员工的公司。我负责蓝色发光二极管(LED)研发方面的工作,这项工作非常有意思。在研发过程中,我们没有和其他公司、机构或大学合作,完全是独立进行研发。也就是说,所有的发明都是我们自己做的。我发明蓝光LED后去了美国,公司过去没有与其他的学术机构有过任何的合作。整个亚洲国家都有同样的问题,虽然有很多的大学毕业生,但当学生毕业后加入企业做研发时并不是很顺利。

关键词：激光照明 LED

超亮度InGaN单量子阱结构绿光发光二极管

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半导体情报 1996年第5期33卷 30-33页

作者： shuji nakamura 孙聂枫

制造出了发光强度为12cd 的超高亮度 InGaN 单量子阱(SQW)结构绿光发光二极管(LED)。这些 InGaN SQW 绿光 LED(12cd)的发光强度大约比常规的 GaP 绿光 LED(0.1cd)高100倍。在正向电流为20mA 时,这些 SQW绿光 LED 的输出功率、外量子效... 详细信息

制造出了发光强度为12cd 的超高亮度 InGaN 单量子阱(SQW)结构绿光发光二极管(LED)。这些 InGaN SQW 绿光 LED(12cd)的发光强度大约比常规的 GaP 绿光 LED(0.1cd)高100倍。在正向电流为20mA 时,这些 SQW绿光 LED 的输出功率、外量子效率、峰值波长和半高全宽值分别为:3mW,6.3%,520nm 和30nm。现已用 MOCVD 法在蓝宝石衬底上生长了这种 p-Al-GaN/InGaN/n-GaN 结构的 InGaN SQW 绿光 LED。

关键词： Ⅲ-Ⅴ族氮化物半导体量子阱结构

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下一代“HC85系”混合动力特快试验列车

国外铁道机车与动车 2022年第1期 30-33页

作者： [日]中村修二彭惠民(译) 石炜(校) 不详

日本东海铁路客运公司开发的下一代"HC85系"特快试验列车采用高性能、小型化、高效化的新型混合动力系统,整体成型的新型转向架构架,振动检测装置,车-地数据通信等创新技术设备,以提高列车可靠性、安全性、环保性及降低维修工作量。介... 详细信息

日本东海铁路客运公司开发的下一代"HC85系"特快试验列车采用高性能、小型化、高效化的新型混合动力系统,整体成型的新型转向架构架,振动检测装置,车-地数据通信等创新技术设备,以提高列车可靠性、安全性、环保性及降低维修工作量。介绍该型列车主要特点、性能、结构及车载设备。使用这种试验列车进行混合动力基本性能试验、长期耐久试验等,以实现日本国内120 km/h最高运行速度的最初目标。

关键词：混合动力系统柴油机主发电机牵引蓄电池

High-brightness polarized light-emitting diodes

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Light(Science & Applications) 2012年第1期1卷 72-78页

作者： Elison Matioli Stuart Brinkley Kathryn M Kelchner Yan-Ling Hu shuji nakamura Steven DenBaars James Speck Claude Weisbuch Department of Electrical Engineering and Computer Science Massachusetts Institute of TechnologyCambridgeMAUSA Department of Electrical and Computer Engineering University of CaliforniaSanta BarbaraCAUSA Materials Department University of CaliforniaSanta BarbaraCAUSA Laboratoire de Physique de la Matie`re Condense´e CNRSEcole PolytechniquePalaiseauFrance

Light-emitting diodes are becoming the alternative for future general lighting applications,with huge energy savings compared to conventional light sources owing to their high efficiency and *** light sources would largely enhance the efficiency in a number of applications,such as in liquid-crystal displays,and also greatly improve contrast in general illumination due to the reduction in indirect ***,we demonstrate light-emitting diodes presenting high-brightness polarized light emission by combining the polarization-preserving and directional extraction properties of embedded photonic-crystals applied to non-polar gallium nitride.A directional enhancement of up to 1.8-fold was observed in the total polarized light emission together with a high polarization degree of 88.7%at 465 *** discuss the mechanisms of polarized light emission in non-polar gallium nitride and the photonic-crystal design rules to further increase the light-emitting diode *** work could open the way to polarized white-light emitters through their association with polarization-preserving down-converting phosphors.

关键词： GaN LEDs m-plane polarized light

Future Technologies and Applications of Ⅲ-Nitride Materials and Devices

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Engineering 2015年第2期1卷 161-161页

作者： shuji nakamura Materials Department of the College of Engineering University of CaliforniaSanta Barbara (UCSB)

Ⅲ-nitride light-emitting diodes(LEDs)are now used almost everywhere,due to their energy-saving *** the near future,the vast majority of lighting sources will undoubtedly be based on *** future technologies and applic... 详细信息

关键词：氮化硅材料应用技术硅发光二极管器件照明光源 LED GaN

Germline BRCA2 mutation in a case of aggressive prostate cancer accompanied by spinal bulbar muscular atrophy

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Asian Journal of Andrology 2022年第1期24卷 116-118页

作者： Hiroshi Hongo Takeo Kosaka Hideyuki Hayashi Kohei nakamura Hiroshi Nishihara shuji Mikami Himisha Beltran Mototsugu Oya Department of Urology Keio University School of Medicine35 ShinanomachiShinjuku-kuTokyo 160-8582Japan Genomics Unit Keio Cancer CenterKeio University School of Medicine35 ShinanomachiShinjuku-kuTokyo 160-8582Japan Division of Diagnostic Pathology Keio University Hospital35 ShinanomachiShinjuku-kuTokyo 160-8582Japan Department of Medical Oncology Dana-Farber Cancer Institute450 Brookline AvenueBostonMA 02215USA

Dear Editor,Spinal and bulbar muscular atrophy(SBMA)or Kennedy’s disease is a rare X-linked,recessive,lower motor neuron disease caused by a CAG repeat expansion within the first exon of the androgen receptor(AR)*** of the CAG-triplet repeat impacts AR function;therefore,men with SBMA are thought to be at a very low risk of prostate *** previously reported a case of high-risk prostate cancer with SBMA(repeat length 46).

关键词： atrophy muscular cancer

The first Japanese case of intraductal cancer of the prostate with checkpoint kinase 2 mutation

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Asian Journal of Urology 2022年第4期9卷 480-482页

作者： Hiroshi Hongo Takeo Kosaka Kohei nakamura shuji Mikami Hiroshi Nishihara Mototsugu Oya Department of Urology Keio University School of MedicineJapan Genomics Unit Keio Cancer CenterKeio University School of MedicineJapan Department of Diagnostic Pathology Keio University HospitalJapan

Dear editor:Intraductalcarcinomaoftheprostate(IDC-P)ischaracterized by expansive growth of cancer cells in normal prostatic ducts with basal cell layer and associated with high grade invasive prostate cancer(PCa).However,the molecular profile or clinical character of IDC-P in progressive castration-resistant PCa(CRPC)was not fully characterized yet.

关键词： cancer clinical prostatic

Efficacy of low-dose thiopurine therapy for the induction of remission in steroid-dependent ulcerative colitis: Comparison with cytapheresis

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Open Journal of Gastroenterology 2012年第1期2卷 9-14页

作者： shuji Kochi Shotaro nakamura Takayuki Matsumoto Department of Medicine and Clinical Science Graduate School of Medical Sciences Kyushu University Fukuoka Japan.

Background: The role of azathioprine (AZA) and 6-mercaptopurine (6-MP) in the induction of remission in patients with ulcerative colitis (UC) remains unclear. Aims: To compare the efficacy and safety of low-dose thiopurine (AZA/6-MP) and cytapheresis (CAP) for the induction of remission in patients with steroid- dependent UC. Patients and Methods: We reviewed the clinical course of 65 patients with steroid-dependent UC with moderate activity, who were treated with either low-dose AZA/6-MP (T-group, n = 38) or with CAP (C-group, n = 27). The efficacy and safety for the first 10 weeks after the start of the therapies were compared between the two groups. The cumulative probability curves of treatment failure were estimated by the Kaplan-Meier method. Clinical remission was defined as an ulcerative colitis activity index value of less than 150 without any other treatments. Results: Neither clinical characteristics, concomitant therapies, nor laboratory data (except for serum albumin levels) were different between the two groups. The remission rate at 10 weeks was not different between the two groups (55.3% in the T-group and 70.4% in the C-group, p = 0.22 in the intention-to-treat analysis). The frequencies of adverse events did not differ be- tween the two groups (p = 0.12). The cumulative pro- bability of treatment failure at 10 weeks was 44.7% for the T-group and 29.6% for the C-group (p = 0.23). Conclusions: Low-dose thiopurine therapy is an alter- native candidate for the induction of remission in pa- tients with steroid-dependent, moderate UC.

关键词： Ulcerative Colitis Azathioprine 6-Mercaptopurine Cytapheresis Induction of Remission

Usefulness of ultrasonography to assess the response to steroidal therapy for the rare case of type 2b immunoglobulin G4-related sclerosing cholangitis without pancreatitis:A case report

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World Journal of Clinical Cases 2020年第22期8卷 5821-5830页

作者： Yuto Tanaka Kenya Kamimura Ryota nakamura Marina Ohkoshi-Yamada Yohei Koseki Takeshi Mizusawa Satoshi Ikarashi Kazunao Hayashi Hiroki Sato Akira Sakamaki Junji Yokoyama shuji Terai Division of Gastroenterology and Hepatology Graduate School of Medical and Dental SciencesNiigata UniversityNiigata 9518510Japan

BACKGROUND A type 2b immunoglobulin G4(IgG4)-related sclerosing cholangitis(SC)without autoimmune pancreatitis is a rare condition with *** the variety of the imaging modalities have tested its usefulness in diagnosing the IgG4-SC,however,the usage of ultrasonography for the assessment of the response to steroidal therapy on the changes of bile duct wall thickness have not been reported in the ***,the information of our recent case and reported cases have been *** SUMMARY We report the case of an 82-year-old Japanese man diagnosed with isolated IgG4-related SC based on the increase of serum IgG4,narrowing of the bile duct,its wall thickness,no complication of autoimmune pancreatitis,and IgG4 positive inflammatory cell infiltration to the wall with the fibrotic *** cholangiogram revealed type 2b according to the *** treatment showed a favorable effect,with the smooth decrease in serum IgG4 and the improvement of the bile duct wall *** As isolated type 2b,IgG4-SC is rare,the images,histological findings,and clinical course of our case will be helpful for physicians to diagnose and treat the new cases appropriately.

关键词： Immunoglobulin G4-related sclerosing cholangitis Type 2b Corticosteroid Autoimmune pancreatitis Ultrasonography Imaging Case report