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| 1 | The Development of a Two-finger Dexterous Bionic Hand with Three Grasping Patterns-NWAFU Hand显示文摘Bionic inspiration from human thumb and index finger was the drive to design a high-performance two-finger dexterous hand.The size of each phalanx and the motion range of each joint in the human thumb and index finger were summarized,and the features of three grasping patterns were described in detail.Subsequently,a two-finger dexterous bionic hand with 6 Degrees of Freedom(DoFs)was developed.Both the mechanical thumb and index finger were made up of three rigid phalanx links and three mechanical rotation joints.Some grasp-release tests validated that the bionic hand can perform three grasping patterns:power grasp,precision pinch and lateral pinch.The grasping success rates were high under the following cases:(1)when power grasping was used to grasp a ring with external diameter 20 mm-140 mm,a cylinder with mass<500 g,or objects with cylinder,sphere or ellipsoid shape;(2)when the precision pinch was used to grasp thin or small objects;(3)when the lateral pinch was used to grasp low length-to-width ratio of objects.The work provided a method for developing two-fimger bionic hand with three grasping patterns,and further revealed the linkage between the difference in fimger structure and size and the hand manipulation dexterity. | Zhiguo Li Zhongliang Hou Yuxiao Mao Yan Shang Lukasz Kuta | 2020 | Journal of Bionic Engineering2020，17，4： | 3 |
| 2 | Optical thermometry based on near-infrared luminescence from phosphors mixture显示文摘Luminescence ratiometric thermometry based on rare earth(RE)ions has attracted great interest for the potential applications in many fields.But the improvement of the measurement sensitivity and accuracy is significantly restricted due to the small energy gap between thermally coupled levels(TCL).Here,a strategy striving for good thermometric properties of luminescent materials was designed by using the phosphors mixture composed of NaY(WO_(4))_(2):Nd^(3+)-Yb^(3+)and NaY(WO_(4))_(2):Er^(3+),which were prepared by secondary sintering method.Under the excitation of 980 nm lase r,the near-infrared(NIR)emissions(710-920 nm)from Nd^(3+)ions are effectively strengthened when the temperature increases from 304 to773 K,whereas Er^(3+)NIR luminescence centered at around 1536 nm is thermally quenched.The remarkably different response of NIR emissions to the thermal variation allows us to map temperature through the ratiometric method.By optimizing the dopant concentration of rare earth(RE)ions,a maximum sensitivity of 5.14%/K together with a measurement uncertainty of about 0.1 K is acquired at304 K,which is superior to the previously reported RE luminescence-based temperature sensors,indicating that the approach developed here can pave the way for achieving optical thermometry with desired properties. | Wei Xu Xin Zhu Di Zhao Longjiang Zheng Fengkai Shang Zhiguo Zhang | 2022 | Journal of Rare Earths2022，40，2： | 0 |
| 3 | Efficient elimination of carbamazepine using polyacrylonitrile-supported pyridine bridged iron phthalocyanine nanofibers by activating peroxymonosulfate in dark condition显示文摘The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitrile(PAN)nanofibers by electrospinning.The introduction of INA destroys theπ-πconjugated stack structure in phthalocyanine molecules and exposes more active sites.The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum,and the FeMATNPcINA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction.The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate(PMS)to eliminate carbamazepine(CBZ)within 40 minutes(PMS 1.5 mmol/L)in the dark.The effects of catalyst dosage,PMS concentration,pH and inorganic anion on the degradation of CBZ are investigated.It has been confirmed by electron paramagnetic resonance,gas chromatography–mass spectroscopy and free radical capture experiments that the catalytic system is degraded by·OH,SO4^(·-)and Fe(IV)=O are the major active species,the singlet oxygen(^(1)O_(2))is the secondary active species.The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids. | Zhexin Zhu Wenjie Qian Zhiguo Shang Xiaoji Ma Zhendong Wang Wangyang Lu Wenxing Chen | 2024 | Journal of Environmental Sciences2024，，3： | 0 |
| 4 | Dual-excitation decoding multiparameter-based ratiometric luminescence thermometry:a new strategy toward reliable and accurate thermal sensing显示文摘Luminescence thermometry can perform noninvasive thermal sensing with high spatial resolution and fast response,emerging as an exciting field of research due to its promising applications in biomedicine.Nevertheless,because of the interaction between light and complex tissues,the reliability and the accuracy of this technique suffer serious interference,which significantly restricts its practical utilization.Here,a strategy to implement effective luminescence nanothermometry is preliminarily proposed by employing the different thermal responses between Yb^(3+)→Nd^(3+)and Nd^(3+)→Yb^(3+)energy transfer processes.Different from the traditional ratiometric sensing method,where two luminescence intensities are used as the thermal response parameters,we use two intensity ratios between Yb^(3+)and Nd^(3+)near-IR emissions that are obtained under dual excitation as the detecting and reference signals to perform temperature measurement.This multiparameter-based,self-reference thermometry technique,as we define it,exhibits excellent immunity to the influences arising from the fluctuation and loss of pumping sources as well as the luminescence attenuation in media.High thermal sensitivity(~2.2%K^(-1))and good resolution(~0.35°C)are successfully achieved here,accompanied by a measurement error of~1.1°C in a biological environment test,while large errors are observed based on the traditional ratiometric approach(~8.9°C,~23.2°C).We believe the viewpoint in this work could boost luminescence thermometry and provide an ingenious route toward high-performance thermal sensing for biological systems. | WEI XU SHUNING ZONG FENGKAI SHANG LONGJIANG ZHENG ZHIGUO ZHANG | 2022 | Photonics Research2022，10，11： | 0 |
| 5 | Combining methylated SEPTIN9 and RNF180 plasma markers for diagnosis and early detection of gastric cancer显示文摘Dear Editor,Early diagnosis is critical for successful treatment of gastric adenocarcinoma(GA).However,the sensitivities of tumor markers carcinoembryonic antigen(CEA),cancer antigen 19-9(CA19-9)and CA72-4 for GA detection are approximately 20%[1],and the sensitivities of all markers combined for early gastric cancer detection is still very low[2].DNA methylation plays a major role in tumorigenesis and therefore has obvious potential as a non-invasive biomarker for cancer detection[3].Through genome-wide methylation analysis and histological verification,we previously identified ring finger protein 180(RNF180)as a novel preferentially methylated gene in GA[4,5]. | Yongzhan Nie Xianchun Gao Xiqiang Cai Zhen Wu Qiaoyi Liang Guobing Xu Na Liu Peng Gao Jingyu Deng Hongzhi Xu Zhanlong Shen Changqi Cao Fenrong Chen Nannan Zhang Yongxi Song Mingjun Sun Chengyin Liu Guangpeng Zhou Weili Han Jianhua Dou Huahong Xie Liping Yao Zhiguo Liu Gang Ji Xin Wang Qingchuan Zhao Lei Shang Daiming Fan Xiaoliang Han Jianlin Ren Han Liang Zhenning Wang Jinhai Wang Qi Wu Jun Yu Kaichun Wu the MAGIS Study Group | 2023 | Cancer Communications2023，43，11： | 0 |
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