检索结果-内蒙古大学图书馆

Piezoresistive MXene/Silk fibroin nanocomposite hydrogel for accelerating bone regeneration by Re-establishing electrical microenvironment

引用

Bioactive Materials 2023年第4期22卷 1-17页

作者： Zhi-Chao Hu Jia-Qi Lu Tai-Wei Zhang Hai-Feng Liang Hao Yuan Di-Han Su Wang Ding Rui-Xian Lian Yu-Xiang Ge Bing Liang Jian Dong Xiao-Gang Zhou Li-Bo Jiang Department of Orthopaedic Surgery Zhongshan HospitalFudan UniversityShanghai200032China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai UniversityShanghai200072China Department of Orthopedics Surgery Minhang HospitalFudan UniversityShanghai201100China Key Laboratory for Ultrafine Materials of Ministry of Education Frontiers Science Center for Materiobiology and Dynamic ChemistryResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China Department of Orthopedic Surgery Zhongshan Hospital(Xiamen)Fudan UniversityXiamen361015China

The electrical microenvironment plays an important role in bone ***,the underlying mechanism by which electrical stimulation(ES)promotes bone regeneration remains unclear,limiting the design of bone microenvironment-specific electroactive ***,by simple co-incubation in aqueous suspensions at physiological temperatures,biocompatible regenerated silk fibroin(RSF)is found to assemble into nanofibrils with aβ-sheet structure on MXene nanosheets,which has been reported to inhibit the restacking and oxidation of *** electroactive hydrogel based on RSF and bioencapsulated MXene is thus prepared to promote efficient bone *** MXene/RSF hydrogel also acts as a piezoresistive pressure transducer,which can potentially be utilized to monitor the electrophysiological *** sequencing is performed to explore the underlying mechanisms,which can activate Ca^(2+)/CALM signaling in favor of the direct osteogenesis *** is found to facilitate indirect osteogenesis by promoting the polarization of M2 macrophages,as well as stimulating the neogenesis and migration of *** improvements in bone regeneration and angiogenesis are observed with MXene/RSF hydrogels under ES in ***,the MXene/RSF hydrogel provides a distinctive and promising strategy for promoting direct osteogenesis,regulating immune microenvironment and neovascularization under ES,leading to re-establish electrical microenvironment for bone regeneration.

关键词： Bone regeneration Electrical microenvironment Regenerated silk fibroin MXene Electrical stimulation

来源：评论

学校读者我要写书评

暂无评论

A 2.4GHz monolithic SiGe power amplifier for Wireless-LAN transceiver

A 2.4GHz monolithic SiGe power amplifier for Wireless-LAN tr...

引用

2nd Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2010

作者： Ruan, Ying Chen, Lei Liu, Yan-Hua Ran, Feng Lai, Zong-Sheng Institute of Microelectronic Circuit and System East China Normal University Shanghai China Faculty of Computer and Information Engineering Shanghai University of Electric Power Shanghai China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai China

ISBN: (纸本)9781424467372

A high-linearity power amplifier (PA) for 2.4GHz Wireless-LAN transceiver is presented. The PA is designed and implemented using a 0.18um SiGe BiCMOS process. An on-chip adaptive linearizer is comprised of a base-emitter diode of the bias transistor and a bypass capacitor with almost no increase in die area and no extra dc consumption. Besides the linearization function, the active biasing circuit is also temperature-insensitive with simple structure. Including all matching circuits and biasing circuits, the die area of the fully integrated PA is 1.2mm*1.1mm. Temperature simulation indicates the variation of power gain is less than 1.6dB from 20°C to 80°C. The second-order and third-order IMD are less than -30.9dBc and -34.5dBc when the output P1dB has been reached. With 3.3V supply, the PA achieves max P1dB of 23.2dBm and a power added efficiency (PAE)of 21.3%.

关键词： Power amplifiers

来源：评论

学校读者我要写书评

暂无评论

Morphology-controlled porphyrin nanocrystals with enhanced photocatalytic hydrogen production

引用

Nano Research 2022年第6期15卷 5719-5725页

作者： Ronghui Cao Jinghan Wang Yusen Li Jiajie Sun Feng Bai School of Physics and Electronics Henan UniversityKaifeng 475004China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Academy for Advanced Interdisciplinary Studies Henan UniversityKaifeng 475004China

Molecular self-assembly is a natured-inspired strategy to integrate individual functional molecules into supramolecular nanostructured materials through noncovalent bond interactions for solar to fuel ***,the design and engineering of the morphology,size,and orderly stacking of supramolecular nanostructures remain a great *** this study,regular porphyrin nanocrystals with different orderly stacked structures are synthesized through noncovalent self-assembly of Pt(II)meso-tetra(4-carboxyphenyl)porphine(PtTCPP),using surfactants with different *** synergy of noncovalent bond interactions between porphyrin molecules,and between porphyrin molecules and surfactants resulted in different molecular packing *** to the spatial ordering of PtTCPP molecules,the different nanocrystals exhibit both collective optical properties and morphology-dependent activities in photocatalytic hydrogen *** measurements of the photodeposition of dual cocatalysts showed that the photogenerated electrons and holes selectively aggregated at different active sites,revealing separation pathways and directional transfer of photogenerated electrons and holes in the *** study provides a new strategy to exert rational control over porphyrin self-assembly nanocrystals for highly efficient water splitting.

关键词： porphyrin self-assembly morphology-dependent photocatalytic activity directional transfer photogenerated electrons and holes

来源：评论

学校读者我要写书评

暂无评论

Low-drive-voltage OLEDs with a novel cohost electron transport layer

Low-drive-voltage OLEDs with a novel cohost electron transpo...

引用

作者： Wei, F.X. Khan, M.A. Zhang, X.B. Cao, J. Zhu, W.Q. Jiang, X.Y. Zhang, Z.L. Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai 200072 China Department of Materials Science Shanghai University Jiading Campus Shanghai 201800 China

ISBN: (纸本)9787561752289

We demonstrated efficient electron injection and transport in organic light-emitting diodes using an electron-transport layer composed of 4, 7-diphenyl-1, 10-phenanthroline (BPhen) with 8-hydroxy-quinolinato lithium (Liq) co-deposited layer. Based on cohost strategy, a low-voltage driving of OLEDs with the structure of [ ITO/m-MTDATA/NPB/Alq/Liq (33%) : Bphen/LiF/Al] has been achieved. It is found that the power efficiency is enhanced by ∼ 20% while driving voltage is reduced by ∼ 15% as compared to the control device. Therefore this strategy with the judicial doping concentration of Liq greatly increases the electron conductivity in ETL, leading to the lowering the operating voltage and enhancing the power efficiency of the OLEDs.

关键词： Electron injection

来源：评论

学校读者我要写书评

暂无评论

Low voltage organic light-emitting devices with step barrier layer

Low voltage organic light-emitting devices with step barrier...

引用

作者： Xu, W. Khan, M.A. Jiang, X.Y. Zhang, Z.L. Zhu, W.Q. Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai 200072 China Department of Materials Science Shanghai University Jiading Campus Shanghai 201800 China

ISBN: (纸本)9787561752289

The electron injection transportation in OLEDs were improved by using a Gaq layer between Alq (or Bphen) and TBADN as step barrier. Since the LUMO (Lowest Unoccupied Molecular Orbital) of Gaq (2.9 eV) lies in between that of Alq (3.1 eV) (or Bphen (3.0 eV)) and TBADN (2.8 eV), step barrier from Alq (or BPhen) though Gaq to TBADN can be formed. The experimental results indicate that: The J-V characteristics of both the electron only and the complete devices show the increase of the current density in devices with step barrier compared with the devices without step barrier. For electron only devices, the driving voltage at the current density of 20 mA/cm2 were reduced from 7.9 V to 4.9 V for devices with Alq, and from 4.2 V to 3.1 V for devices with Bphen respectively owing to the introduce of step barrier. For the complete devices, after Gaq step barrier was introduced, at 20 mA/cm2, the driving voltage were reduced from 7 V to 5. 8 V for devices with Alq and from 6.2 V to 5.1 V for devices with Bphen. When step barrier was introduced, the luminance at 200 mA/cm2 were increased from 1684 cd/m2 to 2 736 cd/m2 for device with Alq, and from 1026 cd/m2 to 2466 cd/m2 for devices with BPhen respectively. The phenomena were explained by using tunnel theory.

关键词： Molecular orbitals

来源：评论

学校读者我要写书评

暂无评论

Organic thin film field effect transistors with MoO3 /Al electrode and OTS/SiO2 bilayer gate insulator

Organic thin film field effect transistors with MoO3 /Al ele...

引用

作者： Bai, Y. Liu, X. Chen, L. Zhu, W.Q. Jiang, X.Y. Zhang, Zh.L. Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai 200072 China Department of Materials Science Shanghai University Jiading Campus Shanghai 201800 China

ISBN: (纸本)9787561752289

An organic thin-film transistor (OTFTs) having MoO3/Al electrode and OTS/SiO2 bilayer gate insulator configuration between gate insulator and source/drain electrodes is investigated. Thermal SiO2 layer grown is used as the OTFT gate dielectric;Copper phthalocyanine(CuPc) is used as an active layer. We have found that using silane coupling agents-octade-cyltrichlorosilane (OTS) to reduce the surface energy of the SiO2 gate dielectric and significantly improve device performance. This OTS/SiO2 bilayer gate insulator configuration increases the field-effect mobility, reduces the threshold voltage, and improves the on/off ratio at the same time. The device with MoO3/AI electrode had similar Ids compared to the device with Au electrode at same gate voltage. MoO3/AI was proved to be a superior electrode. Our results indicate that using double-layer of electrode and double-layer of insulator is an effective way to improve OTFT performance.

关键词： Silica

来源：评论

学校读者我要写书评

暂无评论

Encapsulation of organic light-emitting devices for the application of display

Encapsulation of organic light-emitting devices for the appl...

引用

International Conference on (ICEPT) Electronic Packaging Technology

作者： C.Y. Li B. Wei J. H. Zhang The School of Mechanical & Electronic Engineering and Automation Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University China

Organic light-emitting diodes (OLED) is being considered as one of the most potential technology for the application of flat panel display (FPD) due to the low driving voltage, high luminance and high efficiency. Furthermore, OLED displays with plastic substrate also have many attractive features, such as ultra-thin and light in substrate. However, short operation-time hinders the process of OLED technology to industrialization due to its extremely sensitive to the operation environment. The key issues in achieving such displays are how to protect flexible OLED (FOLED) from moisture and oxygen. In this paper, some recent progresses in OLED packaging have been described and compared, such as the characteristics of oxygen and water permeability in different species of plastic substrates, the merits and demerits of chemical, physical and hybrid encapsulation methods. Finally, effects of the barrier film onto a plastic substrate and passivation film on the performance (efficiency and lifetime) OLED device have been discussed. In addition, in order to observe the roughness of passivated film, the oxygen and water permeability, and the fabrication method of FOLED , some widely-used measurement technology have also been reviewed.

关键词： Organic light emitting diodes Substrates Encapsulation Films Glass Packaging Plastics

来源：评论

学校读者我要写书评

暂无评论

Study of GaN-based Light-emitting Diodes with Double Roughened Surfaces

Study of GaN-based Light-emitting Diodes with Double Roughen...

引用

2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Jianhua Zhang Lianqiao Yang Jianzheng Hu Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Educat Institute of RD Group Rainbow Optoelectronics Material Shanghai Co.ltd.

In this paper, GaN-based blue light emitting diodes with double roughened surfaces were fabricated and compared with planar LEDs and these with single roughened layer. The double roughened surfaces were fulfilled by patterned sapphire substrates (PSS) and roughened p-GaN surface. Magnesium treatment during the growth process was used to produce p-GaN surface roughening. After the epitaxial growth, the four group samples were fabricated using the standard process (four mask steps) with a mesa area of 10x23 mil2. At last, 25 LED devices were packaged for each group using the same packaging material and by the same method. It was found that import of PSS and roughened p-GaN surface may lead to a little higher voltage by simply copying the epitaxial process of planar LED. However, even fabricated by the non-optimized epitaxial process, comparing with planar LEDs, the optical power of the package can be increased by 40.1% by using the patterned sapphire substrate, 10.2% by using p-GaN surface roughing, and 44.9% by using double roughing technologies.

关键词： Light emitting diodes Surface roughness Rough surfaces Surface treatment Substrates Gallium nitride Optical device fabrication

来源：评论

学校读者我要写书评

暂无评论

A New Low-power Pixel Circuit for OLEDoS Microdisplay

A New Low-power Pixel Circuit for OLEDoS Microdisplay

引用

17th China International Forum on Solid State Lighting &2020 International Forum on Wide Bandgap Semiconductors (第十七届中国国际半导体照明论坛暨2020国际第三代半导体论坛)

作者： Deng Hao Guo Aiying Ran Feng Microelectronic Research & Development Center Shanghai UniversityShanghai200444China Key Laboratory of Advanced Display and System Applications Shanghai UniversityShanghai200072 China

ISBN: (数字)9780738111889

ISBN: (纸本)9781665419642

In order to solve the problem of high bandwidth data volume and low power consumption of OLEDoS microdisplay panels,this paper proposes a new type of digital low-power pixel *** driving circuit includes a plurality of pixel driving units,which can store multi-pixel bit information at one time,thereby reducing the amount of data read *** with the traditional digital pixel circuit,the proposed circuit can skip the grayscale data writing process when the picture is still or the rate of change is low,thus reducing the data flow and power consumption.

关键词： Microdisplays Organic light emitting diodes Writing MOSFET Brightness Power demand Integrated circuit modeling

来源：评论

学校读者我要写书评

暂无评论

Effect of TADF fluorescent isomers on the solar cell performance and dielectric characteristics of organic Schottky junctions

Effect of TADF fluorescent isomers on the solar cell perform...

引用

International Conference on (ICEPT) Electronic Packaging Technology

作者： Jie TANG Weiguang LI Junle YU Yanqiong ZHENG Bin WEI Xifeng LI School of Materials Science and Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai China

ISBN: (数字)9781728150642

ISBN: (纸本)9781728150659

We have found that some fluorescent small molecules could be used as donor in organic Schottky junctions (OSJs) and achieved good performance. There has been no report on the application of thermally activated delayed fluorescence (TADF) luminescent material on OSJs. In this work, the effect of TADF isomers on the solar cell performance and dielectric characteristics of the OSJs were investigated. All the doped OSJs demonstrate higher Jsc than the neat C 60 OSJ, and 4CzTPN achieves the highest photovoltaic performance. However, the overall efficiency of these OSJs is not so high probably arising from the high photoluminescence quantum yield of these donors. The dielectric characteristics including Z-V, C-V, and Z-f were investigated, and the Z-V characteristic shows a reverse trend with the Jsc. For the C-V characteristics, the first V peak demonstrates a similar trend with the open circuit voltage and the built-in potential. The 4CzPN OSJ depicts much higher capacitance for the second peak than the 4CzIPN and 4CzTPN based OSJs, indicating the existence of more traps, resulting in a relatively low Jsc. For Z-f characteristics, the impedance of the doped OSJs is slightly lower from 20 Hz to 10 7 Hz than the neat C 60 OSJ.

关键词：

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：