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Transparent micropatterned conductive films based on highlyordered nanowire network

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Nano Research 2024年第5期17卷 4288-4297页

作者： Xin-Ran zhang Hai-Tao Deng Xu Zeng Yi-Lin Wang Peng Huang xiao-sheng zhang School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Transparent conductive films that are based on nanowire networks are essential to construct flexible,wearable,and even stretchable ***,large-scale precise micropatterning,especially with regard to the controllability of the organizing orientation of nanowires,is a critical ***,we proposed a liquid film rupture self-assembly approach for manufacturing transparent conductive films with microstructure arrays based on a highly ordered nanowire *** large-scale microstructure conductive films were fabricated through air-liquid interface self-assembly and liquid film rupture *** typical micropattern morphologies,including square,hexagon,circle,serpentine,etc.,were prepared to reveal the universal applicability of the proposed *** homogeneity and controllability of this approach were verified for multiple *** the assembly cycles increasing,the optical transmittance decreases *** addition,theoretical model analysis is carried out,and the analytical formula of the speed of the film moving with the surface tension and the density of the liquid film is ***,the feasibility of this approach for piezoresistive strain sensors is *** fabrication approach demonstrated a cost-effective and efficient method for precisely arranging nanowires,which is useful in transparent and wearable applications.

关键词： flexible electronics transparent conductive network micropatterning nanowires micro electromechanical systems(MEMS)

Evaluation of Breeding Programs Combining Genomic Information in Chinese Holstein

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Agricultural Sciences in China 2011年第12期10卷 1949-1957页

作者： CHEN Jun WANG Ya-chun zhang Yi SUN Dong-xiao zhang sheng-li zhang Yuan College of Animal Science and Technology/National Engineering Laboratory for Animal Breeding/Key Laboratory of Agricultural Animal Genetics and Breeding China Agricultural University Beijing 100193 P.R.China

Current study adopted gene flow theory and selection index method to compare the breeding efficiency of three breeding plans in the Chinese Holstein cattle using ZPLAN software. Simulated conventional progeny-testing program （PT） and young sire program （YS） were compared with breeding program using genomic selection （GS） taking parameters derived from Chinese Holstein breeding system. The results showed that, GS shortened generation interval by 1.5-2.2 years, and increased the genetic progress by 30-50%, comparing to PT and YS, respectively. Economic analysis showed that GS could obtain a higher breeding efficiency, being 119 and 97% higher than that of PT and YS, respectively; and GS was also powerful in improving functional traits with a low heritability. Main factors affecting breeding efficiency in GS were further discussed, including selection intensity, accuracy and the cost of SNP genotyping. Our finding provided references for future designing and implementing GS in Chinese dairy population.

关键词： Chinese Holstein genomic selection progeny-testing program young sire program breeding plan

Electron-Ion Coupling Mechanism to Construct Stable Output Performance Nanogenerator

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Research 2021年第1期2021卷 1123-1134页

作者： Yan-Yuan Ba Jing-Fu Bao Xin-Tian Liu xiao-Wen Li Hai-Tao Deng Dan-liang Wen xiao-sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Recently,triboelectric nanogenerators(TENGs)have been promoted as an effective technique for ambient energy harvesting,given their large power density and high energy conversion ***,traditional TENGs based on the combination of triboelectrification effect and electrostatic induction have proven susceptible to environmental influence,which intensively restricts their application ***,a new coupling mechanism based on electrostatic induction and ion conduction is proposed to construct flexible stable output performance TENGs(SOP-TENGs).The calcium chloride doped-cellulose nanofibril(CaCl_(2)-CNF)film made of natural carrots was successfully introduced to realize this coupling,resulting from its intrinsic properties as natural nanofibril hydrogel serving as both triboelectric layer and *** coupling of two conductive mechanisms of SOP-TENG was comprehensively investigated through electrical measurements,including the effects of moisture content,relative humidity,and electrode *** contrast to the conventional hydrogel ionotronic TENGs that require moisture as the carrier for ion transfer and use a hydrogel layer as the electrode,the use of a CaCl_(2)-CNF film(i.e.,ion-doped natural hydrogel layer)as a friction layer in the proposed SOP-TENG effectively realizes a superstable electrical output under varying moisture contents and relative humidity due to the compound transfer mechanism of ions and *** new working principle based on the coupling of electrostatic induction and ion conduction opens a wider range of applications for the hydrogel ionotronic TENGs,as the superstable electrical output enables them to be more widely applied in various complex environments to supply energy for low-power electronic devices.

关键词： moisture electrostatic coupling

Wearable multi-sensing double-chain thermoelectric generator

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Microsystems & Nanoengineering 2020年第1期6卷 471-483页

作者： Dan-Liang Wen Hai-Tao Deng Xin Liu Guo-Ke Li Xin-Ran zhang xiao-sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Wearable electronics play a crucial role in advancing the rapid development of artificial intelligence,and as an attractive future vision,all-in-one wearable microsystems integrating powering,sensing,actuating and other functional components on a single chip have become an appealing ***,we propose a wearable thermoelectric generator(ThEG)with a novel double-chain configuration to simultaneously realize sustainable energy harvesting and multi-functional *** contrast to traditional single-chain ThEGs with the sole function of thermal energy harvesting,each individual chain of the developed double-chain thermoelectric generator(DC-ThEG)can be utilized to scavenge heat energy,and moreover,the combination of the two chains can be employed as functional sensing electrodes at the same *** mature mass-fabrication technology of screen printing was successfully introduced to print n-type and p-type thermoelectric inks atop a polymeric substrate to form thermocouples to construct two independent chains,which makes this DC-ThEG flexible,high-performance and *** emerging material of silk fibroin was employed to cover the gap of the fabricated two chains to serve as a functional layer for sensing the existence of liquid water molecules in the air and the *** powering and sensing functions of the developed DC-ThEG and their interactions were systematically studied via experimental measurements,which proved the DC-ThEG to be a robust multi-functional power source with a 151 mV open-circuit *** addition,it was successfully demonstrated that this DC-ThEG can convert heat energy to achieve a 3.3 V output,matching common power demands of wearable electronics,and harvest biothermal energy to drive commercial electronics(i.e.,a calculator).The integration approach of powering and multi-functional sensing based on this new double-chain configuration might open a new chapter in advanced thermoelectric generators,especially in the ap

关键词： temperature generator double

Stretchable multifunctional sensor based on porous silver nanowire/silicone rubber conductive film

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Nano Research 2023年第5期16卷 7618-7626页

作者： Hai-Tao Deng Dan-Liang Wen Jing-Rui Liu Xin-Ran zhang Yi-Lin Wang Peng Huang Beomjoon Kim xiao-sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China CIRMM Institute of Industrial ScienceThe University of TokyoTokyo 153-8505Japan

As one of the promising human–machine interfaces,wearable sensors play an important role in modern society,which advances the development of wearable fields,especially in the promising applications of electronic skin(e-skin),robotics,prosthetics,*** the last decades,wearable sensors tend to be capable of attractive capabilities such as miniaturization,multifunction,smart integration,wearable properties such as lightweight,flexibility,stretchability,conformability for wider *** this work,we developed a stretchable multifunctional sensor based on porous silver nanowire/silicone rubber conductive film(P-AgNW/SR).Its unique structural configuration,i.e.,an assembly of the P-AgNW/SR with good conductivity,stability,resistance response,the insulated silicone rubber layer,provided the feasibility for realizing multiple sensing ***,porous microstructures of the P-AgNW/SR made the device to be used for pressure sensing,exhibiting outstanding dynamic and static resistive responsive behaviors and having a maximum sensitivity of 9.062%∙N^(−1) in a continuous compressive force range of~16 *** the merit of the good piezoresistive property of AgNW/SR networks embedded into the surface of micropores of the P-AgNW/SR,the device was verified to be a temperature sensor for detecting temperature changes in the human body and *** temperature sensor had good sensitivity of 0.844%∙℃^(−1),high linearity of 0.999 in the range of 25–125℃,remarkable dynamic ***,the developed sensor was demonstrated to be a single electrode-triboelectric sensor for active sensing,owing to the unique assembly of the conductive PAgNW/SR electrode and the silicone rubber friction *** on the coupling effect of the triboelectrification and electrostatic induction,the generated electrical signals could be used to sense the human motions,according to the quantitative correlation between the human motions and the features in amplitude and

关键词： wearable electronics porous microstructures multiple sensors pressure sensing temperature sensing triboelectric sensing

Giant hepatobiliary cystadenoma in a male with obvious convex papillate

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World Journal of Gastroenterology 2009年第15期15卷 1906-1909页

作者： Zhao-Wei Qu Qiang He Ren Lang Fei Pan Zhong-Kui Jin Qin-Song sheng Dong zhang xiao-sheng zhang Da-Zhi Chen Department of Hepatobiliary and Pancreatospleenic Surgery Beijing Chaoyang Hospital Affiliated to CapitalMedical University Beijing 100020 China

Hepatobiliary cystadenoma that is most often found in is an uncommon lesion middle-aged women and difficult to diagnose preoperatively. Here, we report a case of giant hepatobiliary cystadenoma in a male patient with obvious convex papillate. On the basis of imaging examinations, the patient was diagnosed as hepatobiliary cystadenoma prior to operation. Left hepatectomy was performed and the patient was symptom-free during a 6-too follow-up period, suggesting that imaging examination is the major diagnostic method of hepatobiliary cystadenoma, and operation is its best treatment modality.

关键词： Hepatobiliary cystadenoma Liverneoplasm Biliary ductal tumour Diagnosis Treatment

Silk Fibroin‑Based Wearable All‑Fiber Multifunctional Sensor for Smart Clothing

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Advanced Fiber Materials 2022年第4期4卷 873-884页

作者： Dan‑Liang Wen Yu‑Xing Pang Peng Huang Yi‑Lin Wang Xin‑Ran zhang Hai‑Tao Deng xiao‑sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Wearable sensing technology enables the interaction between the physical world and the digital world,as takes an irreplaceable role in development of the Internet of Things(IoT),and artificial intelligence(AI).However,increasing requirements posed by rapid development of wearable electronic information technology bring about many for wearable sensing technology,such as the demands for ultrahigh flexibility,air permeability,excellent biocompatibility,and multifunctional ***,we propose a wearable all-fiber multifunctional sensor(AFMS)based on a biocompatible material,i.e.,silk fibroin.A simple two-layer configuration of a silk fiber film and an interdigital Ag nanowires(AgNWs)electrode was designed to construct the AFMS,in which silk fibroin simultaneously serves as a fundamental supporting component and a functional sensing *** and spray coating technologies were introduced to process the silk fiber film and the AgNWs *** all-fiber configuration allows AFMS to possess ultrahigh flexibility and good air permeability,and silk fibroin enables the AFMS to have excellent *** importantly,benefiting from the all-fiber structure and the environmentally sensitive dielectric property of silk fibroin,the AFMS presented multiple sensing characteristics,including pressure sensing,temperature sensing,and humidity *** them,the pressure sensing function reached a high sensitivity of 2.27 pF/kPa(7.5%/kPa)and a remarkable resolution of~26 Pa in the low pressure ***,the outstanding mechanical reliability and sensing stability of AFMS were proven by a systematic *** addition,the AFMS was successfully applied for smart mask for breathing monitoring and a smart glove for bending angle recognition of finger *** sensing characteristics combined with prominent fundamental features enable the AFMS tremendous potential in the smart sensing field,e.g.,smart clothing.

关键词： Wearable electronics Silk fibroin Multifunctional sensing Smart clothing

Establishment of an animal model of ischemic type intrahepatic biliary lesion in rabbits

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World Journal of Gastroenterology 2009年第6期15卷 732-736页

作者： Qin-song sheng Da-Zhi Chen Ren Lang Qiang He Yong-Jiu Yang Zhao-Wei Qu De-Fang Zhao xiao-sheng zhang Department of Hepatobiliary and Pancreatosplenic Surgery Beijing Chaoyang Hospital affiliated to the Capital Medical University Beijing 100020 China

AIM:To explore a method to establish an animal model of ischemic type intrahepatic biliary lesion in rabbits. METHODS:Forty Japanese white rabbits of clean grade were divided randomly into four groups(10 rabbits per group)including sham operation(SO) group,and artery-bile obstruction(ABO)-1 h group, ABO-2 h group and ABO-3 h *** the rabbits in this study underwent the same initial surgical procedure in which the liver was prepared as for graft removal during liver *** in the SO group,no additional vascular intervention was performed,while in groups ABO-1 h,ABO-2 h and ABO-3 h,the animals underwent combined clamping of the hepatic artery and common bile duct with microvascular clips for 1,2 and 3 h,*** the scheduled occlusion time,the clip was removed to recover blood *** animals were killed 4 wk after *** survival rate,liver function, cholangiography and histopathological manifestation of the rabbits in each group were observed. RESULTS:The survival rate was 100%in groups SO,ABO-1 h and ABO-2 h,while it was 60%in group ABO-3 *** each observation time,the change degree of the indexes of liver function was proportional to the clamping time(ABO-3 h>ABO-2 h>ABO-1 h> SO,P<0.05).Cholangiographical and histopathologic manifestations both showed that intrahepatic biliary lesion aggravated proportionally with the increase of the clamping time. CONCLUSION:An animal model of ischemic type intrahepatic biliary lesion in rabbits is successfully established,which may provide a reliable technique for basic and clinical research into the etiology, development and prophylaxis of ischemic type intrahepatic biliary lesion after liver transplantation.

关键词： Biliary complication Ischemic type biliary lesion Animal model Liver transplantation Intrahepatic biliary stricture Ischemic reperfusion injury

Recent progress in silk fibroin-based flexible electronics

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Microsystems & Nanoengineering 2021年第3期7卷 1-25页

作者： Dan-Liang Wen De-Heng Sun Peng Huang Wen Huang Meng Su Ya Wang Meng-Di Han Beomjoon Kim Juergen Brugger Hai-Xia zhang xiao-sheng zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China CIRMM Institute of Industrial ScienceThe University of TokyoTokyo 153-8505Japan Microsystems Laboratory Ecole Polytechnique Federale de Lausanne(EPFL)1015 LausanneSwitzerland Institute of Microelectronics Peking University100087 BeijingChina

With the rapid development of the Internet of Things(loT)and the emergence of 5G,traditional silicon-based electronics no Ion ger fully meet market dema nds such as nonplanar application scenarios due to mechanical *** provides unprecedented opportunities for flexible electronics that bypass the physical rigidity through the introduction of flexible *** recent decades,biological materials with outstanding biocompatibility and biodegradability,which are considered some of the most promising candidates for next-generation flexible electronics,have received increasing attention,e.g.,silk fibroin,cellulose,pectin,chitosan,and *** them,silk fibroin presents greater superiorities in biocompatibility and biodegradability,and moreover,it also possesses a variety of attractive properties,such as adjustable water solubility,remarkable optical transmittance,high mechanical robustness,light weight,and ease of processing,which are partially or even completely lacking in other biological ***,silk fibroin has been widely used as fundamental components for the construction of biocompatible flexible electronics,particularly for wearable and implantable ***,in recent years,more attention has been paid to the investigation of the functional characteristics of silk fibroin;such as the dielectric properties,piezoelectric properties,strong ability to lose electrons,and sensitivity to environmental ***,this paper not only reviews the preparation technologies for various forms of silk fibroin and the recent progress in the use of silk fibroin as a fundamental material but also focuses on the recent advaneed works in which silk fibroin serves as functional *** on ally,the challenges and future development of silk fibroin-based flexible electronics are summarized.

关键词： fibroin silk attractive