检索结果-内蒙古大学图书馆

Enhancement of piezophototronic hydrogen evolution reaction through the polarization of ferroelectric Bi4Ti3O12 microplates

引用

International Journal of Hydrogen Energy 2024年 50卷 15-25页

作者： Chang, Shun Cheng Chen, Po-Han Chen, Yu-Ching Wu, Jyh Ming Department of Materials Science and Engineering National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu300 Taiwan High Entropy Materials Center National Tsing Hua University Section 2 Kuang Fu Road 101 Hsinchu300 Taiwan Ph.D. Program in Prospective Functional Materials Industry National Tsing Hua University 101 Section 2 Kuang Fu Road Hsinchu300 Taiwan

In this study, we analyzed the properties of Bi4Ti3O12 microplates in the context of hydrogen evolution reaction. Piezoresponse force microscopy revealed a typical butterfly curve, indicating that as-synthesized Bi4Ti3O12 exhibits ferroelectric properties. Under ultrasonication, the amount of hydrogen produced by polarized (2000 V) Bi4Ti3O12 increased from 728 to 1349 μmol g−1, which was 1.85 times higher than that generated by unpolarized Bi4Ti3O12. The increase in hydrogen evolution rate may be attributed to the gradual alignment of polarization within the ferroelectric domains of Bi4Ti3O12. Moreover, with synergistic piezophototronic activity, the amount of hydrogen produced by Bi4Ti3O12 was further increased to 1478 μmol g−1, which was 200% higher than that generated by unpolarized Bi4Ti3O12. Theoretical calculations revealed that Bi4Ti3O12 microplates exhibit a high piezoelectric potential along the x-axis, which is consistent with the spontaneous polarization of the microplates. By applying an external polarization field, ferroelectric polarization was activated to effectively separate free charges and extend carrier lifetime (from 0.6 to 0.84 ns). The application of an external electric field to ferroelectric Bi4Ti3O12 appears to be a favorable strategy for enhancing its piezophototronic activity. Our findings may facilitate future studies in the fields of environmental science and renewable energy. © 2023 Hydrogen Energy Publications LLC

关键词： Bismuth compounds

来源：评论

学校读者我要写书评

暂无评论

Enabling Flow-Based Kinetic Off-Rate Selections Using a Microfluidic Enrichment Device

Enabling Flow-Based Kinetic Off-Rate Selections Using a Micr...

引用

2022 AIChE Annual Meeting

作者： Evenson, William E. Lin, Wan-Zhen Sophie Pang, Kenmond Czaja, Alexander T. Jalali-Yazdi, Farzad Takahashi, Terry T. Malmstadt, Noah Roberts, Richard W. Department of Chemistry Mork Family Department of Chemical Engineering and Materials Science Department of Biomedical Engineering University of Southern California Los AngelesCA90089 United States USC Norris Comprehensive Cancer Center Los AngelesCA90033 United States Department of Chemistry Mork Family Department of Chemical Engineering and Materials Science Department of Biomedical Engineering Department of Molecular and Computational Biology University of Southern California Los AngelesCA90089 United States Department of Chemistry University of Southern California Los AngelesCA90089 United States Mork Family Department of Chemical Engineering and Materials Science University of Southern California Los AngelesCA90089 United States Department of Biomedical Engineering University of Southern California Los AngelesCA90089 United States

ISBN: (纸本)9780816911189

Modern genomic sequencing efforts are identifying potential diagnostic and therapeutic targets more rapidly than existing methods can generate the peptide- and protein-based ligands required to study them. To address this problem, we have developed a microfluidic enrichment device (MFED) enabling kinetic off-rate selection without the use of exogenous competitor. We tuned the conditions of the device (bed volume, flow rate, immobilized target) such that modest, readily achievable changes in flow rates favor formation or dissociation of target-ligand complexes based on affinity. Simple kinetic equations can be used to describe the behavior of ligand binding in the MFED and the kinetic rate constants observed agree with independent measurements. We demonstrate the utility of the MFED by showing a 4-fold improvement in enrichment compared to standard selection. The MFED described here provides a route to simultaneously bias pools toward high-affinity ligands while reducing the demand for target-protein to less than a nanomole per selection. © 2020 American Chemical Society.

关键词： Microfluidics

来源：评论

学校读者我要写书评

暂无评论

Towards peripheral neuron regeneration: Imaging nerve biomechanics using Brillouin spectroscopy 21

Towards peripheral neuron regeneration: Imaging nerve biomec...

引用

Optical Biopsy XXI: Toward Real-Time Spectroscopic Imaging and Diagnosis 2023

作者： Cheburkanov, Vsevolod Du, Junwei Berezin, Mikhail Yakovlev, Vladislav V. Texas AM University Department of Biomedical Engineering College StationTX77843 United States Washington University School of Medicine Department of Radiology St. LouisMO63110 United States Washington University The Institute of Materials Science and Engineering St. LouisMO63130 United States

ISBN: (纸本)9781510658516

Poor recovery of peripheral neuron damage caused by trauma is currently among the most common causes for low quality of life among US population. Disabilities caused by neuron damage and poor recovery tend to cause early workforce retirement, creating a gap in skilled workforce in the US. Recent studies suggest that biomechanical vectors play an important role in nerve recovery and functionality restoration. This preliminary study focuses on investigating of correlation between biomechanical properties of murine sciatic nerve and Brillouin elasticity data. Combined Brillouin-Raman spectroscopy was used as a label-free method of elasticity measurement. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Photodynamic therapy

来源：评论

学校读者我要写书评

暂无评论

Targeting nanoplatform synergistic glutathione depletion-enhanced chemodynamic,microwave dynamic,and selective-microwave thermal to treat lung cancer bone metastasis

引用

Bioactive materials 2024年第9期39卷 544-561页

作者： Man Shu Jingguang Wang Ziyang Xu Teliang Lu Yue He Renshan Li Guoqing Zhong Yunbo Yan Yu Zhang Xiao Chu Jin Ke Department of Joint and Orthopedics Orthopedic CenterZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong510282China Department of Orthopaedics General Hospital of Southern Theater Command of PLAGuangzhou510010China Department of Biomedical Engineering School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510640China Department of Orthopaedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesSouthern Medical UniversityGuangdong510080China Medical Research Center Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesSouthern Medical UniversityGuangzhou510080China Department of Internal Medicine Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen361102China Guangdong Engineering Technology Research Center of Functional Repair of Bone Defects and Biomaterials Guangdong510080China

Once bone metastasis occurs in lung cancer,the efficiency of treatment can be greatly *** mainstream treatments are focused on inhibiting cancer cell growth and preventing bone *** ablation(MWA)has been used to treat bone ***,MWA may damage the surrounding normal ***,it could be beneficial to develop a nanocarrier combined with microwave to treat bone ***,a microwave-responsive nanoplatform(MgFe_(2)O_(4)@ZOL)was ***_(2)O_(4)ZOL NPs release the cargos of Fe^(3+),Mg^(2+)and zoledronic acid(ZOL)in the acidic tumor microenvironment(TME).Fe^(3+)can deplete intracellular glutathione(GSH)and catalyze H_(2)O_(2)to generate•OH,resulting in chemodynamic therapy(CDT).In addition,the microwave can significantly enhance the production of reactive oxygen species(ROS),thereby enabling the effective implementation of microwave dynamic therapy(MDT).Moreover,Mg^(2+)and ZOL promote osteoblast *** addition,MgFe_(2)O_(4)ZOL NPs could target and selectively heat tumor tissue and enhance the effect of microwave thermal therapy(MTT).Both in vitro and in vivo experiments revealed that synergistic targeting,GSH depletion-enhanced CDT,MDT,and selective MTT exhibited significant antitumor efficacy and bone *** multimodal combination therapy provides a promising strategy for the treatment of bone metastasis in lung cancer patients.

关键词： MgFe_(2)O_(4)@ZOL nanoparticles Targeting Chemodynamic therapy Microwave dynamic therapy Microwave thermal therapy

来源：评论

学校读者我要写书评

暂无评论

Two-Layer High-Throughput:Effective Mass Calculations Including Warping

引用

engineering 2022年第3期8卷 74-80页

作者： Andrew Supka Nicholas A.Mecholsky Marco Buongiorno Nardelli Stefano Curtarolo Marco Fornari Department of Physics&Science of Advanced Materials Program Central Michigan UniversityMount PleasantMI 48859USA Department of Physics&Vitreous State Laboratory The Catholic University of AmericaWashingtonDC 20064USA Department of Physics&Department of Chemistry University of North TexasDentonTX 76203USA Center for Autonomous Materials Design Duke UniversityDurhamNC 27708USA Department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA

In this paper,we perform two-layer high-throughput *** the first layer,which involves changing the crystal structure and/or chemical composition,we analyze selected Ⅲ-Ⅴ semiconductors,filled and unfilled skutterudites,as well as rock salt and layered *** second layer searches the full Brillouin zone(BZ)for critical points within 1.5 eV(1 eV=1.602176×10^(-19)J)of the Fermi level and characterizes those points by computing the effective *** introduce several methods to compute the effective masses from first principles and compare them to each *** approach also includes the calculation of the density-of-states effective masses for warped critical points,where traditional approaches fail to give consistent results due to an underlying non-analytic behavior of the critical *** demonstrate the need to consider the band structure in its full complexity and the value of complementary approaches to compute the effective *** also provide computational evidence that warping occurs only in the presence of degeneracies.

关键词： High-throughput Electronic structure Band warping Effective mass

来源：评论

学校读者我要写书评

暂无评论

基于碳点功能化的二氧化硅封装螺吡喃的光响应材料用于动态信息加密

引用

science China materials 2024年第2期67卷 680-689页

作者：朱姜昆赵慧敏杨玉慧吴伟胡磊磊卫尤豪高阳旸 School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Department of Polymer Materials Zhejiang Sci-Tech UniversityHangzhou 310018China Institute of Smart Biomedical Materials Zhejiang Sci-Tech UniversityHangzhou 310018China Zhejiang Sci-Tech University Shengzhou Innovation Research Institute Shengzhou 312451China

开发刺激响应荧光材料对于解决信息安全的新兴需求至关重要.本文中,我们提出了一种刺激响应双发射荧光材料SP@SiO_(2)-CDs(SP:螺吡喃),该材料是通过将螺吡喃化合物封装到碳点功能化的二氧化硅中得到的.这种复合材料显示碳点在470 nm处... 详细信息

开发刺激响应荧光材料对于解决信息安全的新兴需求至关重要.本文中,我们提出了一种刺激响应双发射荧光材料SP@SiO_(2)-CDs(SP:螺吡喃),该材料是通过将螺吡喃化合物封装到碳点功能化的二氧化硅中得到的.这种复合材料显示碳点在470 nm处发射蓝色光,螺吡喃在620 nm处发射红色光.在连续紫外光(365 nm)照射下,螺吡喃分子经历从闭环到开环的过程,SiO_(2)-CDs和异构部花青之间可以实现显著的荧光能量共振转移.SP@SiO_(2)-CDs复合物粉末不仅可以在紫外光刺激下光致变色从黄色到粉色,而且可以实现从淡蓝色到橙红色的双发射荧光转换.当暴露在白光下时,这种动态荧光行为可以完全恢复到初始状态.基于荧光的时间依赖性,本文成功开发了动态防伪图案和多重编码.此外,通过掺杂聚二甲基硅氧烷,获得了具有高柔韧性和机械强度的薄膜,并展示了其在高级信息加密中的应用.该工作为提高离线便携式信息加密的安全性提供了一种新方法.

关键词： spiropyrans dual-emitting carbon dots dynamic fluorescence time-dependent information encryption

来源：评论

学校读者我要写书评

暂无评论

ALD-induced TiO_(2)/Ag nanofilm for rapid surface photodynamic ion sterilization

引用

Rare Metals 2022年第12期41卷 4138-4148页

作者： Peng-Fei Cai Jun Li Xin-Bao Wu Zhao-Yang Li Jie Shen Jing-Jun Nie Zhen-Duo Cui Da-Fu Chen Yan-Qin Liang Sheng-Li Zhu Shui-Lin Wu School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Department of Orthopedic Trauma Beijing Jishuitan HospitalBeijing 100035China Shenzhen Key Laboratory of Spine Surgery Department of Spine SurgeryPeking University Shenzhen HospitalShenzhen 518041China Laboratory of Bone Tissue Engineering Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and TraumatologyBeijing Jishuitan HospitalBeijing 100035China

The daily life of people in the intelligent age is inseparable from electronic device,and a number of bacteria on touch screens are increasingly threatening the health of ***,a photocatalytic TiO_(2)/Ag thin film was synthesized on a glass by atomic layer deposition and subsequent in situ ***-visible(UV-Vis)spectra showed that this film can harvest the simulated solar light more efficiently than that of pristine TiO_(2).The antibacterial tests in vitro showed that the antibacterial efficiency of the TiO_(2)/Ag film against *** and *** was 98.2%and 98.6%,under visible light irradiation for 5 *** underlying mechanism was that the in-situ reduction of Ag on the surface of TiO_(2)reduced the bandgap of TiO_(2)from 3.44 to 2.61 eV due to the formation of Schottky heterojunction at the interface between TiO_(2)and ***,TiO_(2)/Ag can generate more reactive oxygen species for bacterial inactivation on the surface of electronic *** importantly,the TiO_(2)/Ag film had great biocompatibility with/without light *** platform not only provides a more convenient choice for the traditional antibacterial mode but also has limitless possibilities for application in the field of billions of touch screens.

关键词： Antibacterial Photoresponsive Photodynamic Surface sterilization Atomic layer deposition(ALD)

来源：评论

学校读者我要写书评

暂无评论

Strong and high-conductivity hydrogels with all-polymer nanofibrous networks for applications as high-capacitance flexible electrodes

引用

npj Flexible Electronics 2024年第1期8卷 323-333页

作者： Huimin He Yaqing Chen Aoyang Pu Li Wang Wenxiu Li Xiaoyu Zhou Chuyang Y.Tang Kiwon Ban Mengsu Yang Lizhi Xu Department of Precision Diagnostic and Therapeutic Technology City University of Hong Kong Shenzhen Futian Research InstituteShenzhen518057China Department of Mechanical Engineering The University of Hong KongHong KongChina Institute for Frontier Science Nanjing University of Aeronautics and AstronauticsNanjingChina Advanced Biomedical Instrumentation Centre Limited Hong KongChina Department of Biomedical Sciences and Tung Biomedical Sciences CentreCity University of Hong KongHong KongChina Department of Civil Engineering The University of Hong KongHong KongChina Key Laboratory of Biochip Technology Biotech and Health CentreShenzhen Research Institute of City University of Hong KongShenzhenChina Materials Innovation Institute for Life Sciences and Energy(MILES) The University of Hong Kong Shenzhen Institute of Research and Innovation(HKU-SIRI)Shenzhen518057China

Flexible devices,such as soft bioelectronics and stretchable supercapacitors,have their practical performance limited by electrodes which are desired to have high conductivity and capacitance,outstanding mechanical flexibility and strength,great electrochemical stability,and good ***,we report a simple and efficient method to synthesize a nanostructured conductive hydrogel to meet such ***,templated by a hyperconnective nanofibrous network from aramid hydrogels,the conducting polymer,polypyrrole,assembles conformally onto nanofibers through in-situ polymerization,generating continuous nanostructured conductive *** resulting conductive hydrogel shows superior conductivity(72 S cm^(−1))and fracture strength(27.2 MPa).Supercapacitor electrodes utilizing this hydrogel exhibit high specific capacitance(240 F g^(−1))and cyclic ***,bioelectrodes of patterned hydrogels provide favorable bioelectronic interfaces,allowing high-quality electrophysiological recording and stimulation in physiological *** high-performance electrodes are readily scalable to applications of energy and power systems,healthcare and medical technologies,smart textiles,and so forth.

关键词： stability capacitance conductivity

来源：评论

学校读者我要写书评

暂无评论

Real-me Nonlnear Pulse Evolution Dynamics n a Tm-doped Fiber Laser

Real-me Nonlnear Pulse Evolution Dynamics n a Tm-doped Fiber...

引用

CLEO: science and Innovations, CLEO:S and I 2023 - Part of Conference on Lasers and Electro-Optics 2023

作者： Xu, Shutao Zeng, Junje Sander, Michelle Y. Deparment of Electrical and Computer Engineering BU Photonics Center Boston University BostonMA02215 United States Division of Materials Science and Engineering Boston University BrooklineMA02446 United States Department of Biomedical Engering Boston University BostonMA02215 United States

We investigate the nonlinear pules evolution dynamics in a Tm-doped fiber laser in real-time with a modified dispersive Fourier trasform technique. Coherence degradation and recovery proceses are analyzed with spectra... 详细信息

ISBN: (纸本)9781957171258

关键词： Fiber lasers

来源：评论

学校读者我要写书评

暂无评论

An enzyme-free interdigitated electrode for ketamine detection

引用

Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A 2023年第5期46卷 441-452页

作者： Phan, Thien Luan Van Hieu, Nguyen Lin, Jing-Jenn Wu, Hsing-Ju Chu, Pei-Yi Hsiao, Chin-Sung Yao, Fiona Yan-Dong Lin, Yung-Kai Ching, Congo Tak Shing Graduate Institute of Biomedical Engineering National Chung Hsing University Taichung Taiwan Viet Nam Department of Applied Materials and Optoelectronic Engineering National Chi Nan University Taiwan Research Assistant Center Show Chwan Memorial Hospital Taiwan Department of Medical Research Chang Bing Show Chwan Memorial Hospital Taiwan Department of Pathology Show Chwan Memorial Hospital Taiwan School of Medicine College of Medicine Fu Jen Catholic University Taiwan Computer Science and Information Engineering Asia University Taiwan Division of Science Engineering and Health Studies College of Professional and Continuing Education The Hong Kong Polytechnic University Hong Kong Department of Food Science National Taiwan Ocean University Taiwan Department of Electrical Engineering National Chi Nan University Nantou County Taiwan

Ketamine is an anesthetic, which when used wrongly would affect judgment and behavior, increasing risks to individual such as unwanted or risky sexual behavior. This study reports the development of an admittance- and capacitance-spectroscopy-based sensor to detect ketamine in solution, such as whiskey, a popular alcoholic drink. The result confirms the proposed method is capable of detecting the presence of ketamine in whiskey, in concentration as low as 6.25 ng/μL, by using admittance and capacitance measured at 6.75 MHz, as well as quantifying the measured admittance (sensitivity: 300 μΩ−1/Log (ng/μL);limit of detection (LOD): 0.16 ng/μL) or capacitance data (sensitivity: 2 nF/Log (ng/μL);LOD: 0.73 ng/μL) at 18 kHz and 7.69 MHz, respectively. © 2023 The Chinese Institute of Engineers.

关键词： Capacitance

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：