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| 1 | Content analyses in GaMnAs by double-crystal X-ray diffraction显示文摘A model for analyzing point defects in com-pound crystals was improved. Based on this modified model, a method for measuring Mn content in GaMnAs was estab-lished. A technique for eliminating the zero-drift-error was also established in the experiments of X-ray diffraction. With these methods, the Mn content in GaMnAs single crystals fabricated by the ion-beam epitaxy system was analyzed. | CHEN Nuofu XIU Huixin YANG Junling WU Jinling ZHONG Xingru LIN Lanying | 2002 | Chinese Science Bulletin2002，47，4： | 2 |
| 2 | 北方半干旱草原生态系统光合参数的季节和年际变异显示文摘生态系统表观量子效率(α)、最大光合速率(P_(max))和暗呼吸速率(R_(d))不仅反映了生态系统水平光合生理特征,同时也是碳循环模型中光合过程模拟的关键参数。气候和植被因子都会影响光合参数的季节和年际变异,但二者在光合参数调控过程中的相对贡献和作用途径尚不清晰。本研究基于连续12年(2006-2017)的涡度相关观测数据,分析了内蒙古半干旱典型草原光合参数的季节和年际变化规律利用回归分析和结构方程模型(SEM)方法明晰了环境和生理调控的作用途径及相对贡献。结果发现,光合参数(α、P_(max)和R)均表现出单峰的季节变化趋势,并呈现明显的年际波动。温度(T_(a))和土壤含水量(SWC)的变化共同影响光合参数的季节变化,而SWC主导了其年际变异。α和R_(d)的变化主要由T_(a)决定,而P_(max)的变化主要受SWC的影响。SEM模型分析表明,除了直接作用外,环境因子主要通过影响冠层水平气孔导度(gc)对光合参数和碳同化生理过程进行调控。此外,叶面积指数对光合参数特别是Pmax的季节和年际变异起主要调控作用。以上结果明确了环境和植被共同决定了生态系统水平光合参数的季节和年际变异,并强调了在水分受限的草原生态系统中,植被生理调控在光合碳同化能力和碳汇功能评估中的重要作用。 | Cuihai You Yanbing Wang Xingru Tan Bingwei Zhang Tingting Ren Boyu Chen Mengzhen Xu Shiping Chen | 2022 | Journal of Plant Ecology2022，15，5： | 1 |
| 3 | An ultrafast-response and flexible humidity sensor for human respiration monitoring and noncontact safety warning显示文摘The humidity sensor is an essential sensing node in medical diagnosis and industrial processing control.To date,most of the reported relative humidity sensors have a long response time of several seconds or even hundreds of seconds,which would limit their real application for certain critical areas with fast-varying signals.In this paper,we propose a flexible and low-cost humidity sensor using vertically aligned carbon nanotubes(VACNTs)as electrodes,a PDMSParylene C double layer as the flexible substrate,and graphene oxide as the sensing material.The humidity sensor has an ultrafast response of~20 ms,which is more than two orders faster than most of the previously reported flexible humidity sensors.Moreover,the sensor has a high sensitivity(16.7 pF/%RH),low hysteresis(<0.44%),high repeatability(2.7%),good long-term stability,and outstanding flexibility.Benefiting from these advantages,especially the fast response,the device has been demonstrated in precise human respiration monitoring(fast breathing,normal breathing,deep breathing,asthma,choking,and apnea),noncontact electrical safety warning for bare hand and wet gloves,and noncontact pipe leakage detection.In addition,the facile fabrication of the flexible platform with the PDMS-Parylene C double layer can be easily integrated with multisensing functions such as pH sensing,ammonium ion sensing,and temperature sensing,all of which are useful for more pattern recognition of human activity. | Xiaoyi Wang Yang Deng Xingru Chen Peng Jiang Yik Kin Cheung Hongyu Yu | 2021 | Microsystems & Nanoengineering2021，7，6： | 1 |
| 4 | Low-hysteresis,pressure-insensitive,and transparent capacitive strain sensor for human activity monitoring显示文摘Wearable strain sensors have been widely used for human activity monitoring.Most reported strain sensors have mainly focused on material engineering,high stretchability and large gauge factors.Few works have focused on strain sensor’s robustness and reliability,including low hysteresis,good long-term stability,good electrode material stability,and low coupling effects under multi-input signals,which are the factors that limit practical strain sensor applications.To develop a high-performance strain sensor,we propose a flexible capacitive sensor structure with three-dimensional(3D)interdigital electrodes fabricated by vertically aligned carbon nanotubes.Compared with a traditional resistive strain sensor and a capacitive strain sensor with vertical sandwich electrodes,a strain sensor with horizontal parallel interdigital electrodes can benefit from low cross talk in terms of the normal force and improve substrate transparency.Additionally,embedding 3D electrodes into the substrate improves ultrahigh robustness with a low-pressure coupling effect under normal force.Moreover,compared with other reported works,the electrode variation under strain is small(less than 1.6%),which means that the perturbation of inert properties on device performance is small.Finally,the fabricated strain sensor achieves an ultralow hysteresis(0.35%),excellent pressure-insensitive performance(less than 0.8%),fast response(60 ms),good long-term stability,and good transparency.As an application example,a flexible strain sensor was successfully demonstrated as a wearable device for the precise monitoring of different types of human activities,including bending of the finger,knee,elbow,wrist,and neck with large strain signals and small strain signals generated by a mouth-opening activity.This excellent performance indicates that the flexible strain sensor is a promising candidate for human motion detection,soft robotics,and medical care. | Xiaoyi Wang Yang Deng Peng Jiang Xingru Chen Hongyu Yu | 2022 | Microsystems & Nanoengineering2022，8，5： | 0 |
| 5 | Genetic polymorphisms of 44 Y chromosomal genetic markers in the Inner Mongolia Han population and its genetic relationship analysis with other reference populations显示文摘Y chromosomal genetic markers in the non-recombining region are commonly used for human evolution research,familial searching,and forensic male differentiation since they strictly follow paternal inheritance.Y chromosomal short tandem repeats(Y-STRs)possess extraordinarily advantages in forensic applications because of their high polymorphisms and special genetic pattern.Here,we assessed the genetic diversities of 41 Y-STRs and three Y chromosomal insertion/deletion(Y-InDels)loci in the Chinese Inner Mongolia Han population;besides,genetic differentiation analyses among the studied Han population and other previously reported populations were conducted based on 27 same Y-STRs.Totally,425 alleles were observed in 324 Inner Mongolia Han individuals for these Y-markers.Gene diversities of these Y-markers distributed from 0.0306 to 0.9634.The haplotype diversity and discriminatory capacity of these Y-markers in the Inner Mongolia Han population were 0.9999 and 0.98457,respectively.Haplotype resolution comparisons of different Y-marker groups in the studied Han population revealed that higher haplotype resolution could be achieved for these 44 Y-markers.Population genetic analyses of the Inner Mongolia Han population and other reference populations demonstrated that the studied Han population had relatively closer genetic affinities with Northern Han Chinese populations than Southern Han and other minority groups.To sum up,these 44 Y-markers can be utilized as a valuable tool for male differentiation in the Inner Mongolia Han population. | Xiaoye Jin Guohui Xing Chunhua Yang Xingru Zhang Wei Cui Chong Chen Bofeng Zhu | 2022 | Forensic Sciences Research2022，7，3： | 0 |
| 6 | First Report of Avian Tracks from the Cretaceous of Tibet, China显示文摘Objective Despite a large number of bird fossils in the Jehol Biota,Mesozoic bird records from other parts of China are dominated by tracks.Late Cretaceous bird tracks are rarely found in China.Reliable reports so far include a Dongyangornipes and Koreanaornis assemblage of early Late Cretaceous age from Dongyang City,Zhejiang Province,China(Azuma et al.,2013).Buckley et al. | XING Lida CHOU Chunyong Martin G.LOCKLEY YANGCHEN Dolkar CHEN Xingru MA Xinghong ZHOU Wenjun XU Hantian | 2017 | Acta Geologica Sinica(English Edition)2017，91，6： | 0 |
| 7 | Vertical serpentine interconnect-enabled stretchable and curved electronics显示文摘Stretchable and curved electronic devices are a promising technology trend due to their remarkable advantages.Many approaches have been developed to manufacture stretchable and curved electronics.Here,to allow such electronics to better serve practical applications,ranging from wearable devices to soft robotics,we propose a novel vertical serpentine conductor(VSC)with superior electrical stability to interconnect functional devices through a silicon-based microfabrication process.Conformal vacuum transfer printing(CVTP)technology was developed to transfer the networked platform onto complex curved surfaces to demonstrate feasibility.The mechanical and electrical performance were investigated numerically and experimentally.The VSC interconnected network provides a new approach for stretchable and curved electronics with high stretchability and reliability. | Rui Jiao Ruoqin Wang Yixin Wang Yik Kin Cheung Xingru Chen Xiaoyi Wang Yang Deng Hongyu Yu | 2023 | Microsystems & Nanoengineering2023，9，6： | 0 |
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