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Optical, surface, and structural studies of InN thin films grown on sapphire by molecular beam epitaxy

Journal of Vacuum Science and technology A: Vacuum, Surfaces and Films 2023年第5期41卷

作者： Feng, Zhe Chuan Xie, Deng Nafisa, Manika Tun Lin, Hao-Hsiung Lu, Weijie Chen, Jin-Ming Yiin, Jeffrey Chen, Kuei-Hsien Chen, Li-Chyong Klein, Benjamin Ferguson, Ian T. Southern Polytechnic College of Engineering and Engineering Technology Kennesaw State University MariettaGA30060 United States School of Electronic and Electrical Engineering and Physics Fujian University of Technology Fujian350000 China Department of Electrical Engineering Graduate Institute of Photonics and Optoelectronics National Taiwan University Taipei10617 Taiwan Hexagonal Scientific Lab LLC DaytonOH45459 United States National Synchrotron Radiation Research Center Hsinchu30076 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan National Taiwan University Center for Condensed Matter Sciences Taipei10617 Taiwan

A series of indium nitride (InN) thin films have been grown on sapphire substrates by molecular beam epitaxy (MBE) technology under different growth conditions of temperature and plasma power. Their structural, surface, and optical properties are studied by a variety of techniques of scanning electron microscopy, Hall effect, x-ray diffraction, photoluminescence (PL), Raman scattering, x-ray photoelectron spectroscopy (XPS), synchrotron radiation x-ray absorption near edge structure (XANES), and so on. The lower carrier concentration in InN can be obtained with a higher MBE growth temperature and a lower plasma power. As the plasma power increases, the PL peak energy is observed to shift toward the higher energy side and the Raman E2 (high) and A1 (LO) modes are shifted to the lower frequency. The residual compressive strain in epitaxial InN is relaxed. The lower plasma power and the higher growth temperature are preferred for the MBE growth of high-quality InN films. The influencing factors on the InN PL peak and band gap Eg have been revealed. It is evidenced that the InN PL peak and Eg can be shifted from high down to ∼0.65 eV with the carrier concentration down to low E19 cm−3 and the plasma power down to ∼80 W. Both the XPS and N K-edge XANES revealed the antisite defect of N on the In site, NIn. The XANES In L-edge measurements on the In L3-edge of InN films with various carrier concentrations has indicated the fourfold InN intermediate crystal structures. These obtained results are significant and useful to deepen the understanding and promote further investigation in InN and III-N materials. © 2023 Author(s).

关键词： Molecular beam epitaxy

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Self-temperature compensation approach for fiber specklegram magnetic field sensor based on polarization specklegram analysis 8

Self-temperature compensation approach for fiber specklegram...

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8th Symposium on Novel Photoelectronic Detection technology and Applications

作者： Hu, Shicheng Liu, Haifeng Liu, Bo Lin, Wei Zhang, Hao Song, Binbin Wu, Jixuan Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology Institute of Modern Optics Nankai University Tianjin300350 China Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern Optics Nankai University Tianjin300350 China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai519000 China Key Laboratory of Computer Vision and Systems Ministry of Education School of Computer Science and Engineering Tianjin University of Technology Tianjin300384 China Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems College of Electronic and Information Engineering Tianjin Polytechnic University Tianjin300387 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

In this letter, we proposed a self-temperature-compensation approach for fiber specklegram sensor (FSS) based on polarization specklegram analysis. The temperature compensation is achieved by comparing the variation difference of the two specklegrams with vertical linear polarization state. We designed a fiber specklegram magnetic field sensor employing this method and the magneto-birefringence effect of magnetic fluid. The measurement of magnetic field with high stability and good repeatability has been successfully achieved, which demonstrated the effectiveness of the proposed method. Due to the merits of low cost, ease of implement and system simplicity, the proposed method can promote the practical use of the FSS in long term monitoring. © 2022 SPIE

关键词： Polarization

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Quantitative analysis of collagen morphology in breast cancer from millimeter scale using multiphoton microscopy

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Journal of Innovative Optical Health Sciences 2023年第4期16卷 48-57页

作者： Yulan Liu Shunwu Xu Deyong Kang Xingxin Huang Shuoyu Xu Lianhuang Li Liqin Zheng Lida Qiu Zhenlin Zhan Xiahui Han Jianxin Chen Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education Fujian Provincial Key Laboratory of Photonics Technology Fujian Normal University Fuzhou 350007P.R.China School of Electronic and Mechanical Engineering Fujian Polytechnic Normal University Fuqing Fujian 350300P.R.China Department of Pathology Fujian Medical University Union Hospital Fuzhou 350001 P.R.China Department of General Surgery Nanfang Hospital Southern Medical University Guangzhou 510515P.R.China College of Physics and Electronic Information Engineering Minjiang University Fuzhou 350108P.R.China

The tumor microenvironment(TME)is now recognized as an important participant of tumor *** the most abundant extracellular matrix component in TME,collagen plays an important role in tumor *** imaging study of collagen morphological feature in TME is of great significance for understanding the state of *** microscopy(MPM),based on second harmonic generation(SHG)and two-photon excitation fluorescence(TPEF),can be used to monitor the morphological changes of biological tissues without *** this study,we used MPM for large-scale imaging of early invasive breast cancer from the tumor center to normal tissues far from the *** found that there were signi¯cant di®erences in collagen morphology between breast cancer tumor boundary,near tumor transition region and normal tissues far from the ***,the morphological feature of eight collagen¯bers was extracted to quantify the variation trend of collagen in three *** results may provide a new perspective for the optimal negative margin width of breast-conserving surgery and the understanding of tumor metastasis.

关键词： Breast cancer tumor microenvironment collagen¯ber morphology multiphoton microscopy

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Incorporating a service learning term project in an orientation course

Incorporating a service learning term project in an orientat...

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2019 Institute of Industrial and Systems Engineers Annual Conference and Expo, IISE 2019

作者： Scherrer, Christina R. Southern Polytechnic College of Engineering and Engineering Technology Kennesaw State University MariettaGA30060 United States

ISBN: (纸本)9781713814092

Service learning combines course learning outcomes with solving a real problem that serves the community. Research shows that it enhances student learning, improves learning retention and energizes the classroom by applying academic concepts to real-world problems. In revamping the industrial and systems engineering orientation course in the department this year, the decision was made to incorporate a service learning term project. In a course focused on building enthusiasm for industrial and systems engineering while educating students about the basic tools of the field, this appeared to be an excellent fit. The project was designed to be a hands-on approach to the material in the project management, communication, and teamwork modules of the course, in addition to giving students the opportunity to practice industrial engineering functions related to their community agency’s problem. This paper includes a summary of service learning from the literature, specifics about this specific project’s structure and assessments, feedback from student surveys, and insights from the instructor. © 2019 IISE Annual Conference and Expo 2019. All rights reserved.

关键词： Students

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Embracing Diversity, Equity, and Inclusion in Our Classroom and Teaching

Embracing Diversity, Equity, and Inclusion in Our Classroom ...

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2021 ASEE Virtual Annual Conference, ASEE 2021

作者： Asgarpoor, Jena Shafai Handley, Meg Sarang-Sieminski, Alisha L. Slaughter, John Brooks Pollock, Meagan C. Murzi, Homero Cox, Monica Farmer University of Nebraska Lincoln United States Pennsylvania State University United States Franklin W. Olin College of Engineering University of Southern California United States Engineer Inclusion Virginia Polytechnic Institute and State University United States Ohio State University United States

Recent events have brought to light the gravity of the challenges that our society faces today relative to systemic racism and its impact on equity and access in our society. Marginalized groups face daily microaggressions and bias due to the impacts of systemic racism, sexism, homophobia, transphobia, ableism, and other forms of oppression. Recently, the NAE hosted their annual meeting and included a keynote speaker, Dr. John Slaughter, who has committed his life's work to dismantling racism specifically in engineering education. He called the organization and members to recognize the challenges that systemic racism poses for the engineering field and to take action in changing the way our students are educated. Dr. Slaughter pointed out that without an inclusive engineering workforce, we are missing viable and important solutions to engineering problems. As engineering leadership educators, our obligation to our students extends beyond transmission of technical knowledge. We have a responsibility to infuse our curriculum with knowledge of systemic racism, how bias can impact our solutions, and how engineers can lead and create teams that foster belonging and inclusivity. We must help engineering leadership students develop a growth mindset and discover the sophistication of mind to celebrate diversity, equity, and inclusion in their daily lives, school, and workplace. This requires us to consider inclusive leadership as a foundational approach to engineering leadership development. Inclusive leadership has been shown to positively impact team performance, decision-making, collaboration, innovation, and motivation. Inclusive leaders celebrate differences and recognize and challenge attacks on DEI. As engineering leadership educators, we must lead by example, model inclusive leadership behavior, and have courage to infuse these concepts into our curriculum. This paper assembles the collective thoughts, perspectives, insights, and experiences of a distinguished panel

关键词： Students

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The hybrid converged classroom

The hybrid converged classroom

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2019 Institute of Industrial and Systems Engineers Annual Conference and Expo, IISE 2019

作者： Scherrer, Christina R. Keyser, Robert S. Southern Polytechnic College of Engineering and Engineering Technology Kennesaw State University MariettaGA30060 United States

ISBN: (纸本)9781713814092

In answer both to cost pressures and the demands of our non-traditional students, our systems and industrial engineering department offers a converged online and face-to-face hybrid interactive learning environment for our industrial engineering technology degrees. Half of the course is asynchronous and then both the online and face-to-face students attend a 75-minute live session at the same time once per week. This modality has been very successful for our department, both in terms of student success and increased enrollment. This paper briefly reviews the literature on distance learning, explains the specifics of the hybrid converged format used in our department in detail, presents some results on student success in the program, and highlights the advantages and disadvantages of hybrid converged learning from the viewpoint of all major stakeholders. © 2019 IISE Annual Conference and Expo 2019. All rights reserved.

关键词： Students

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Interface engineering of Co(OH)2@CN p-n heterojunction for enhanced photocatalytic xylose/xylan oxidation and CO2 reduction

SSRN

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SSRN 2024年

作者： Ling, Weikang Ma, Jiliang Jiang, Weikun Wei, Huanqiu Ren, Yuchen Hong, Min Kong, Lingzhao Sun, Runcang Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery College of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian116034 China State Key Laboratory of Bio-based Materials and Green Papermaking Key Laboratory of Pulp & Paper Science and Technology of Shandong Province Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan250353 China Centre for Future Materials School of Engineering University of Southern Queensland Springfield CentralQLD4300 Australia School of Environmental Science and Engineering Suzhou University of Science and Technology Jiangsu Suzhou China China

The construction of p-n heterojunction is considered a prominent method for promoting efficient separation/migration of photoinduced carriers, thereby enhancing photocatalytic performance. Herein, a series of nanoflower spherical Co(OH)2@CN-x p-n heterojunction photocatalysts were fabricated using a simplified one-step hydrothermal strategy. Notably, Co(OH)2@CN-2 exhibited optimal performance, showcasing a CO evolution rate of 46.2 μmol g-1 h-1 and a xylonic acid yield of 69.9%. These values are 14.7/3.7 and 2.8/2.4 times higher than those of pristine CN and Co(OH)2, respectively. Additionally, Co(OH)2@CN-2 demonstrated excellent recyclability and chemical stability. Comparative experiments, coupled with 13CO2-labelling testing, confirmed the carbon sources of the obtained CO (72.3% from CO2 reduction and 27.7% from xylose oxidation). The charge transfer mechanism in Co(OH)2@CN-x p-n heterojunctions was systematically elucidated using in-situ X-ray photoelectron spectroscopy and density functional theory calculations. This work presents a practical approach for constructing p-n heterojunction photocatalysts to enhance photocatalytic biomass oxidation coupled with CO2 reduction. © 2024, The Authors. All rights reserved.

关键词： Density functional theory

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TDERS,an exosome RNA-derived signature predicts prognosis and immunotherapeutic response in clear cell renal cell cancer:a multicohort study

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Journal of the National Cancer Center 2024年第4期4卷 382-394页

作者： Aimin Jiang Ying Liu Ziwei He Wenqiang Liu Qiwei Yang Yu Fang Baohua Zhu Xiaofeng Wu Huamao Ye Bicheng Ye Shunxiang Gao Le Qu Wenhao Xu Peng Luo Linhui Wang Department of Urology Changhai HospitalNaval Medical University(Second Military Medical University)ShanghaiChina Department of Urology Shanghai East HospitalTongji University School of MedicineShanghaiChina Department of Urology the Third Affiliated Hospital of Naval Military Medical University(Eastern Hepatobiliary Surgery Hospital)ShanghaiChina School of Clinical Medicine Medical College of Yangzhou Polytechnic CollegeYangzhouChina Eye Institute and Department of Ophthalmology Eye&ENT HospitalFudan UniversityShanghaiChina Department of Urology Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjingChina Department of Urology Fudan University Shanghai Cancer CenterState Key Laboratory of Genetic EngineeringCollaborative Innovation Center for Genetics and DevelopmentSchool of Life SciencesInstitute of Biomedical Sciencesand Human Phenome InstituteFudan UniversityShanghaiChina Department of Oncology Zhujiang HospitalSouthern Medical UniversityGuangzhouChina

Background:Tumor-derived exosomes are involved in tumor progression and immune invasion and might func-tion as promising noninvasive approaches for clinical ***,there are few reports on exosom-based markers for predicting the progression and adjuvant therapy response rate among patients with clear cell renal cell carcinoma(ccRCC).Methods:The signatures differentially expressed in exosomes from tumor and normal tissues from ccRCC pa-tients were correspondingly deregulated in ccRCC *** adopted a two-step strategy,including Lasso and bootstrapping,to construct a novel risk stratification system termed the TDERS(Tumor-Derived Exosome-Related Risk Score).During the testing and validation phases,we leveraged multiple external datasets containing over 2000 RCC cases from eight cohorts and one inhouse cohort to evaluate the accuracy of the *** addition,enrichment analysis,immune infiltration signatures,mutation landscape and therapy sensitivity between the high and low TDERS groups were ***,the impact of TDERS on the tumor microenvironment(TME)was also analysed in our single-cell ***:TDERS consisted of 12 mRNAs deregulated in both exosomes and tissues from patients with *** achieved satisfactory performance in both prognosis and immune checkpoint inhibitor(ICI)response across all ccRCC cohorts and other pathological types,since the average area under the curve(AUC)to predict 5-year overall survival(OS)was larger than 0.8 across the four *** in the TDERS high group were resistant to ICIs,while mercaptopurine might function as a promising agent for those *** with a high TDERS were characterized by coagulation and hypoxia,which induced hampered tumor antigen presentation and relative resistance to *** addition,single cells from 12 advanced samples validated this phenomenon since the interaction between dendritic cells and macrophages was ***,PLOD2,which is highly expressed i

关键词： Renal cell carcinoma Exosome Non-invasive biopsy Immunotherapy response Multiomics PLOD2

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Phyllotaxis-inspired nanosieves with multiplexed orbital angular momentum

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eLight 2021年第1期1卷 46-56页

作者： Zhongwei Jin David Janoschka Junhong Deng Lin Ge Pascal Dreher Bettina Frank Guangwei Hu Jincheng Ni Yuanjie Yang Jing Li Changyuan Yu Dangyuan Lei Guixin Li Shumin Xiao Shengtao Mei Harald Giessen Frank Meyer zu Heringdorf Cheng-Wei Qiu Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Faculty of Physics and Center for Nanointegration Duisburg-Essen(CENIDE) University of Duisburg-EssenLotharstrasse 1-2147057 DuisburgGermany Department of Materials Science and Engineering Shenzhen Institute for Quantum Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Beijing Qianjunyide Technology Co.Ltd Beijing 100031China. Physics Institute and Stuttgart Center of Photonics Engineering(SCoPE) University of Stuttgart70569 Stutt-gartGermany. School of Physics University of ElectronicScience and Technology of ChinaChengdu 611731China. Key Laboratory of Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China. Department of Electronic and Information Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina. Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina. State Key Laboratory On Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemShenzhen Graduate SchoolHarbin Institute of TechnologyShenzhen 518055China.

Nanophotonic platforms such as metasurfaces,achieving arbitrary phase profiles within ultrathin thickness,emerge as miniaturized,ultracompact and kaleidoscopic optical vortex ***,it is often required to segment or interleave independent sub-array metasurfaces to multiplex optical vortices in a single nano-device,which in turn affects the device’s compactness and channel ***,inspired by phyllotaxis patterns in pine cones and sunflowers,we theoretically prove and experimentally report that multiple optical vortices can be produced in a single compact phyllotaxis nanosieve,both in free space and on a chip,where one meta-atom may contribute to many vortices *** time-resolved dynamics of on-chip interference wavefronts between multiple plasmonic vortices was revealed by ultrafast time-resolved photoemission electron *** nature-inspired optical vortex generator would facilitate various vortex-related optical applications,including structured wavefront shaping,free-space and plasmonic vortices,and high-capacity information metaphotonics.

关键词： Phyllotaxis vortex nanosieve Free-space Plasmonic vortices Ultrafast time-resolved

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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