|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Group VB transition metal dichalcogenides for oxygen reduction reaction and strain-enhanced activity governed by p-orbital electrons of chalcogen显示文摘Developi ng alter native oxyge n reducti on reactio n (ORR) catalysts to replace precious Pt-based metals with abundant materials is the key challe nge of commercial application of fuel cells. Owing to their various compositi ons and tun able electronic properties, transition metal dichalcogenides (TMDs) have the great potential to realize high-efficiency catalysts for ORR. Here, various 3R-phase dichalcogenides of group VB and VIB transition metals (MX2, M = Nb, Ta, Mo, W;X = S, Se, Te) are investigated for ORR catalysts by using density functional theory calculations. The computed over-potentials of group VB TMDs are much less than those of group VIB TMDs. For group VB TMDs, a volcano-type plot of ORR catalytic activity is established on the adsorption energies of *OH, and NbS2 and TaTe2 exhibit best ORR activity with an oveepotential of 0.54 V. To achieve even better activity, strain engineering is performed to tune ORR catalytic activity, and the minimum over-potential of 0.43 V can be realized. We further dem on strate that the shift of p orbital center of surface chalcoge n elements under strain is responsible for tuning the catalytic activity of TMDs. | Shuyang Zhao Ke Wang Xiaolong Zou Lin Gan Hongda Du Chengjun Xu Feiyu Kang Wenhui Duan Jia Li | 2019 | Nano Research2019，12，4： | 4 |
| 2 | Boundedness and stability for discrete-time delayed neural network with complex-valued linear threshold neurons 显示文摘 | DUAN Chengjun SONG Qiankun | 2010 | Discrete Dynamics in Nature and Society2010，，： | 1 |
| 3 | Simultaneous 3D Visualization of the Microvascular and Neural Network in Mouse Spinal Cord Using Synchrotron Radiation Micro-Computed Tomography显示文摘Effective methods for visualizing neurovascular morphology are essential for understanding the normal spinal cord and the morphological alterations associated with diseases.However,ideal techniques for simultaneously imaging neurovascular structure in a broad region of a specimen are still lacking.In this study,we combined Golgi staining with angiography and synchrotron radiation micro-computed tomography(SRμCT)to visualize the 3D neurovascular network in the mouse spinal cord.Using our method,the 3D neurons,nerve fibers,and vasculature in a broad region could be visualized in the same image at cellular resolution without destructive sectioning.Besides,we found that the 3D morphology of neurons,nerve fiber tracts,and vasculature visualized by SRjiCT were highly consistent with that visualized using the histological method.Moreover,the 3D neurovascular structure could be quantitatively evaluated by the combined methodology.The method shown here will be useful in fundamental neuroscience studies. | Liyuan Jiang Chengjun Li Miao Li Xianzhen Yin Handing Wu Chunyue Duan Yong Cao Hongbin Lu Jianzhong Hu | 2021 | Neuroscience Bulletin2021，37，10： | 1 |
| 4 | From the teapot effect to tap-triggered self-wetting: a 3D self-driving sieve for whole blood filtration显示文摘Achieving passive microparticle filtration with micropore membranes is challenging due to the capillary pinning effect of the membranes.Inspired by the teapot effect that occurs when liquid(tea)is poured from a teapot spout,we proposed a tap-triggered self-wetting strategy and utilized the method with a 3D sieve to flter rare cells.First,a 3D-printed polymer tap-trigger microstructure was implemented.As a result,the 3μm micropore membrane gating threshold(the pressure needed to open the micropores)was lowered from above 3000 to 80 Pa by the tap-trigger microstructure that facilated the liquid leakage and spreading to self-wet more membrane area in a positive feedback loop.Then,we implemented a 3D cone-shaped cell sieve with tap-trigger microstructures.Driven by gravity,the sieve performed at a high throughput above 20 mL/min(DPBS),while the micropore size and porosity were 3μm and 14.1%,respectively.We further filtered leukocytes from whole blood samples with the proposed new 3D sieve,and the method was compared with the traditional method of leukocyte isolation by chemically removing red blood cells.The device exhibited comparable leukocyte purity but a higher platelet removal rate and lower leukocyte simulation level,facilitating downstream single-cell analysis.The key results indicated that the tap-triggered self-wetting strategy could significantly improve the performance of passive microparticle filtration. | Yuang Li Xue Li Lina Zhang Xiaofeng Luan Jiahong jiang Lingqian Zhang Mingxiao Li Jinghui Wang Jiangang Duan Haiping Zhao Yang Zhao Chengjun Huang | 2023 | Microsystems & Nanoengineering2023，9，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员