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| 1 | Friction of low-dimensional nanomaterial systems显示文摘When material dimensions are reduced to the nanoscale,exceptional physical mechanics properties can be obtained that differ significantly from the corresponding bulk materials.Here we review the physical mechanics of the friction of low‐dimensional nanomaterials,including zero‐dimensional nanoparticles,one‐dimensional multiwalled nanotubes and nanowires,and two‐dimensional nanomaterials-such as graphene,hexagonal boron nitride(h‐BN),and transition‐metal dichalcogenides-as well as topological insulators.Nanoparticles between solid surfaces can serve as rolling and sliding lubrication,while the interlayer friction of multiwalled nanotubes can be ultralow or significantly high and sensitive to interwall spacing and chirality matching,as well as the tube materials.The interwall friction can be several orders of magnitude higher in binary polarized h‐BN tubes than in carbon nanotubes mainly because of wall buckling.Furthermore,current extensive studies on two‐dimensional nanomaterials are comprehensively reviewed herein.In contrast to their bulk materials that serve as traditional dry lubricants(e.g.,graphite,bulk h‐BN,and MoS_(2)),large‐area high‐quality monolayered two‐dimensional nanomaterials can serve as single‐atom‐thick coatings that minimize friction and wear.In addition,by appropriately tuning the surface properties,these materials have shown great promise for creating energy‐efficient self‐powered electro‐opto‐magneto‐mechanical nanosystems.State‐of‐the‐art experimental and theoretical methods to characterize friction in nanomaterials are also introduced. | Wanlin GUO Jun YIN Hu QIU Yufeng GUO Hongrong WU Minmin XUE | 2014 | Friction2014，2，3： | 15 |
| 2 | Low-complexity 2D coherently distributed sources decoupled DOAs estimation method显示文摘The existing directions-of-arrival(DOAs) estimation methods for two-dimensional(2D) coherently distributed sources need one-or two-dimensional search,and the computational complexities of them are high. In addition,most of them are designed for special angular signal distribution functions. As a result,their performances will degenerate when deal with different sources with different angular signal distribution functions or unknown angular signal distribution functions. In this paper,a low-complexity decoupled DOAs estimation method without searching using two parallel uniform linear arrays(ULAs) is proposed for coherently distributed sources,as well as a novel parameter matching method. It can resolve the problems mentioned above efficiently. Simulation results validate the effectiveness of our approach. | GUO XianSheng WAN Qun YANG WanLin LEI XueMei | 2009 | Science in China(Series F)2009，52，5： | 12 |
| 3 | Linear Strain-Gradient Effect on the Energy Bandgap in Bent CdS Nanowires显示文摘尽管在半导体的可能的非同类的紧张效果被调查了因为在一半上世纪和紧张坡度能每在灵活 nanostructures 的测微计是超过 1% ,我们仍然缺乏他们对精力乐队的影响的理解。这里,我们进行紧张坡度的系统的阴极射线发光光谱学研究在在低温度的有弹性地弄弯的 CdS nanowires 的导致的激子精力移动,并且发现在弄弯的 nanowires 的激子精力红移动与紧张坡度成正比,格子失真的一个索引。密度功能的计算在弄弯的 nanostructures 显示出乐队差距减小的一样的趋势并且揭示内在的机制。半导体的乐队差距上的重要线性紧张坡度效果应该在在 nanoelectronics 调节光电子的性质的方法上打开新灯。 | Qiang Fu Zi Yue Zhang Liangzhi KOU Peicai Wu Xiaobing Han Xinli Zhu Jingyun Gao Jun Xu Qing Zhao Wanlin Guo Dapeng Yu | 2011 | Nano Research2011，4，3： | 5 |
| 4 | Vibrating Carbon Nanotubes as Water Pumps显示文摘通过 nanopores 和 nanochannels 方向性地进行液体的 Nanopumps 在 nanofiltration,水纯化,和水力发电的发电为他们的潜在的应用吸引了可观的兴趣。这里,我们由分子的动力学模拟证明激动的颤动碳 nanotube (CNT ) 伸臂能充当有效、简单的 nanopump。在颤动的伸臂内的水分子被离心的力量驾驶并且能经历连续流动从修理了到 CNT 的免费目的。抽的功能为单个文件的水链保持好在里面的进一步广泛的模拟表演不仅一狭窄(6,6 ) CNT,而且为在更宽的 CNT 内的像体积的水列,并且水流动与增加 nanotube 的直径 monotonically 增加。 | Hu Qiu Rong Shen Wanlin Guo | 2011 | Nano Research2011，4，3： | 4 |
| 5 | FLEXURAL WAVE DISPERSION IN MULTI-WALLED CARBON NANOTUBES CONVEYING FLUIDS显示文摘Motivated by the great potential of carbon nanotubes for developing nanofluidic devices,this paper presents a nonlocal elastic,Timoshenko multi-beam model with the second order of strain gradient taken into consideration and derives the corresponding dispersion relation of flexural wave in multi-walled carbon nanotubes conveying fluids.The study shows that the moving flow reduces the phase velocity of flexural wave of the lowest branch in carbon nanotubes.The phase velocity of flexural wave of the lowest branch decreases with an increase of flow velocity.However,the effects of flow velocity on the other branches of the wave dispersion are not obvious.The effect of microstructure characterized by nonlocal elasticity on the dispersion of flexural wave becomes more and more remarkable with an increase in wave number. | Lifeng Wang Wanlin Guo Haiyan Hu | 2009 | Acta Mechanica Solida Sinica2009，22，6： | 3 |
| 6 | Materials for evaporation-driven hydrovoltaic technology显示文摘Water constitutes the largest energy carrier on earth,absorbing more than 70%of the solar energy received by the earth's surface,yet its low exploitation has been a constant concern.The hydrovoltaic effect is an emerging technology that generates electricity through the direct interaction between nanomaterials and water of various forms(raindrops,waves,flows,moisture,and natural evaporation).Especially,the evaporation-driven hydrovoltaic effect is a spontaneous and ubiquitous process that can directly convert thermal energy from the surrounding environment into electricity without the demand for additional mechanical work,which shows unique advantages compared with other hydrovoltaic effects.A variety of nanostructured materials have been steadily developed for evaporation-driven hydrovoltaic devices(EHDs)in recent years.However,there has been a lack of a clear specification on the selection and design of materials for improving device performance.Herein,we first analyze the mechanisms of EHDs followed by a summarization of the recent advances in materials,including carbon materials,biomass-based materials,metal oxides,composite materials,and others.We then discuss the strategies for improving the energy conversion efficiency and the output power in terms of structural design,surface modification,and interface treatment.Finally,we provide an outlook on the potential applications of electricity generation,sensors,and desalination technology,as well as the challenges and prospects for the development of this emerging technology in the future. | Chunxiao Zheng Weicun Chu Sunmiao Fang Jin Tan Xiaofan Wang Wanlin Guo | 2022 | Interdisciplinary Materials2022，1，4： | 3 |
| 7 | Inflammation-induced inhibition of chaperone-mediated autophagy maintains the immunosuppressive function of murine mesenchymal stromal cells显示文摘Macroautophagy has been implicated in modulating the therapeutic function of mesenchymal stromal cells(MSCs).However,the biological function of chaperone-mediated autophagy(CMA)in MSCs remains elusive.Here,we found that CMA was inhibited in MSCs in response to the proinflammatory cytokines interferon-γ(IFN-γ)and tumor necrosis factor-α(TNF-α).In addition,suppression of CMA by knocking down the CMA-related lysosomal receptor lysosomal-associated membrane protein 2(LAMP-2A)in MSCs significantly enhanced the immunosuppressive effect of MSCs on T cell proliferation,and as expected,LAMP-2A overexpression in MSCs exerted the opposite effect on T cell proliferation.This effect of CMA on the immunosuppressive function of MSCs was attributed to its negative regulation of the expression of chemokine C-X-C motif ligand 10(CXCL10),which recruits inflammatory cells,especially T cells,to MSCs,and inducible nitric oxide synthase(iNOS),which leads to the subsequent inhibition of T cell proliferation via nitric oxide(NO).Mechanistically,CMA inhibition dramatically promoted IFN-γplus TNF-α-induced activation of NF-κB and STAT1,leading to the enhanced expression of CXCL10 and iNOS in MSCs.Furthermore,we found that IFN-γplus TNF-α-induced AKT activation contributed to CMA inhibition in MSCs.More interestingly,CMA-deficient MSCs exhibited improved therapeutic efficacy in inflammatory liver injury.Taken together,our findings established CMA inhibition as a critical contributor to the immunosuppressive function of MSCs induced by inflammatory cytokines nd highlighted a previously unknown function of CMA. | Jie Zhang Jiefang Huang Yuting Gu Mingxing Xue Fengtao Qian Bei Wang Wanlin Yang Hongshuang Yu Qiwei Wang Xin Guo Xinyuan Ding Jina Wang Min Jin Yanyun Zhang | 2021 | Cellular & Molecular Immunology2021，18，6： | 3 |
| 8 | STRENGTH, PLASTICITY, INTERLAYER INTERACTIONS AND PHASE TRANSITION OF LOW-DIMENSIONAL NANOMATERIALS UNDER MULTIPLE FIELDS显示文摘Atoms are hold together to form different materials and devices through short range interactions such as chemical bonds and long range interactions such as the van der Waals force and electromagnetic interactions. Quantum mechanics is powerful to describe the short range interactions of materials at the nanometer scale, while molecular mechanics and dynamics based on empirical potentials are able to simulate material behaviors at much large scales, but weak in handling of processes including charge transfer and redistributions, such as mechanical-electric coupling of functional nanomaterials, plastic deformation, fracture and phase transition of nanomaterials. These issues are also challenging to quantum mechanics which needs to be extended to van der Waals distance and larger spatial as well as temporal scales. Here, we make brief review and discussions on such kind of mechanical behaviors of some important functional nanomaterials and nanostructures, to probe the frontier of nanomechanics and the trend to multiscale physical mechanics. | Wanlin Guo Yufeng Guo Zhuhua Zhang Lifeng Wang | 2012 | Acta Mechanica Solida Sinica2012，25，3： | 2 |
| 9 | Experimental investigation of three-dimensional mixed-mode fracture of a titanium alloy at room and elevated temperatures显示文摘Damage tolerance of titanium alloy structures is very important for the safety of modern aircraft under complex loading and environmental conditions. However, there is no available systematic knowledge about the effect of alloy thickness under mixed-mode loading at elevated temperatures. In the present study, a newly developed fracture experimental technique based on high-temperature moiré interferometry was employed to investigate experimentally I-II mixed-mode fracture in titanium alloy TC11 of various thicknesses at room and elevated temperatures. Compact shear specimens with thickness ranging from 1.8 to 7.1 mm were tested. The effects of temperature, thickness, and loading angle on the load capacity and crack initiation angle were investigated systematically. The TC11 alloy was shown to possess varied fracture performance at elevated tem-perature, and an opposite thickness effect at room temperature. Increasing temperature would enhance the fracture load capacity of thick specimens but reduce the fracture load capacity of thin specimens. Crack initiation angles under I-II mixed-mode loading showed the thickness-temperature coupling effects. These complex effects call for new development in three-dimensional mixed-mode fracture theory and technologies for damage tolerance assessment. | ZHANG ShaoQin GUO WanLin LI He DENG Ying | 2011 | Science China(Technological Sciences)2011，54，10： | 2 |
| 10 | Three-layer phosphorene-metal interfaces显示文摘Phosphorene 最近由于它的高级搬运人活动性和悦耳的直接 bandgap 在电子的 nanoscale 和 optoelectronic 设备作为其他的隧道材料吸引了许多注意。与单层(ML ) 相比 phosphorene,很少层(FL ) phosphorene 更容易准备,在实验是更稳定的,并且被期望在 phosphorene 金属接口形成更小的 Schottky 障碍高度(SBH ) 。用 ab initio ,电子结构计算和量搬运模拟,我们执行界面的性质的系统的研究三层( 3L ) phosphorene 领域效果晶体管(联邦货物税)与几普通金属联系了(艾尔, Ag , Au , Cu , Ti , Cr , Ni ,并且 Pd )第一次。从投射乐队在垂直方向获得的 SBH 3L phosphorene 金属系统组织到左 bilayer (2L ) phosphorenes 是可比较的,那些为 2L phosphorene 联邦货物税从量运输模拟在侧面的方向获得了。当分别地, Ag 和 Cu 被用作电极,p类型 Schottky 与 0.05 的洞 SBH 联系时,为 3L phosphorene 联邦货物税的量运输模拟证明 3L phosphorene 在侧面的方向与 0.16 和 0.28 eV 的电子 SBH 形成n类型 Schottky 接触, 0.11 , 0.20 ,在侧面的方向的 0.30 , 0.30 ,和 0.31 eV 当 Cr , Pd , Ni , Ti ,艾尔,和 Au 分别地被用作电极时。3L phosphorene 联邦货物税的计算极性和 SBH 通常与可得到的实验一致。 | Xiuying Zhang Yuanyuan Pan Meng Ye Ruge Quhe Yangyang Wang Ying Guo Han Zhang Yang Dan Zhigang Song Jingzhen Li Jinbo Yang Wanlin Guo Jing Lu | 2018 | Nano Research2018，11，2： | 2 |
| 11 | Radial breathing modes of multi-walled carbon nanotubes by an atomic beam-spring model显示文摘Based on molecular force fields,a new finite element model is constructed for multi-walled carbon nanotubes where the interlayer interactions and C--C bonds are simulated by the elements of piece-wise linear spring and rectangular cross section beam,respectively.For high computation efficiency and atomic reification,the radial breathing modes of multi-walled carbon nanotubes are studied systemically using this model.The results show the correspondence between carbon nanotube structures and vibrational modes,which provide unequivocal data for the experimental characterization of carbon nanotubes.An empirical relationship of radial breathing modes frequencies with the nanotube radius are also obtained for two-layer carbon nanotubes. | MIAO ChunYang LI HaiJun GUO WanLin | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，6： | 2 |
| 12 | Three dimensional K-Tz stress fields around the embedded center elliptical crack front in elastic plates显示文摘彻底地详细说明三维(3D ) 有限元素(FE ) 计算, out-of-plane 限制 T z 在模式嵌入中心椭圆的裂缝我有弹性的盘子被学习。T z 与 0.2, 0.4, 0.5, 0.6, 0.8 和 1.0 的方面比率(往来帐户) 在裂缝前面附近被获得。 T 从在有在裂缝前面的正常飞机增加规范的光线的距离( r/a )的到零的裂缝尖端的泊松比率ν
的近似价值的 z 减少排队,并且当椭圆的参数角度ϕ
从 0 ° 改变到 90 °a t 时,逐渐地增加一样的 r/a 。与升起到 1.0 的往来帐户, T z 正在变得将近独立于 ϕ
并且仅仅与 r/a 有关。为 T 为 T , 车验式 > z 被获得描述 T 为最不使用的嵌入的中心椭圆的裂缝的 z 在 0.2 ≤a/c≤1.0 的范围摆平方法。这些 T 和相应压力紧张因素 K 的 z 结果是很好合适的因为 3D 的分析嵌入中心椭圆的裂缝前面地,和二参数的 K-T z 原则被建议。 | Junhua Zhao Wanlin Guo Chongmin She Bo Meng | 2006 | Acta Mechanica Sinica2006，22，2： | 2 |
| 13 | Simulation Studies of a “Nanogun” Based on Carbon Nanotubes显示文摘Quantum mechanical molecular dynamics simulations show that electrically neutral carbon nanotubes or fullerene balls housed in an outer carbon nanotube can be driven into motion by charging the outer tube uniformly.Positively and negatively charged outer tube are found to have quite different actions on the initially neutral nanotubes or fullerene balls.A positively charged tube can drive out the molecule inside it out at speeds over 1 km/s,just like a“nanogun”,while a negatively charged tube can drive the molecule into oscillation inside it and can absorb inwards a neutral molecule in the vicinity of its open end,like a“nano-manipulator”.The results demonstrate that changing the charge environment in specifi c ways may open the door to conceptually new nano/molecular electromechanical devices. | Yitao Dai Chun Tang Wanlin Guo | 2008 | Nano Research2008，1，2： | 2 |
| 14 | 显示文摘 | Dai Yitao Tang Chun Guo Wanlin | 2008 | Nano Res2008，1，： | 1 |
| 15 | Three-pa- rameter approach for elastic-plastic fracture of the semi- elliptical surface crack under tension 显示文摘 | Zhao Junhua Guo Wanlin She Chongmin | 2008 | International Journal of Mechanical Sciences2008，50，7： | 1 |
| 16 | Three-dimensional analyses of plastic constraint for through-thickness cracked bodies显示文摘 | Guo Wanlin | 1999 | Eng Fracture Mech1999，62，45： | 1 |
| 17 | The in- plane and out-of-plane stress constraint factors and K-T- Tz description of stress field near the border of a semi- elliptical surface crack 显示文摘 | Zhao Junhua Guo Wanlin She Chongmin | 2007 | International Journal of Fa- tigue2007，29，3： | 1 |
| 18 | Integrating reduced graphene oxides and PPy nanoparticles for enhanced electricity from water evaporation显示文摘Developing high-performance nanostructured materials is key to deliver the potential of hydrovoltaic technology into practical applications.As single-component materials have approached its limit in generating hydrovoltaic electricity,the development of multi-component hydrovoltaic materials has been necessary in continuously boosting the electricity output.Here,we report a hydrovoltaic material by integrating reduced graphene oxides and polypyrrole nanoparticles(rGO/PPy),where the rGO contributes improved conductivity and large specific surface area while PPy nanoparticles enable enhanced interaction with water.The device fabricated with this material generates a short-circuit current of 6μA as well as a maximum power density of over 1μW/cm3 from natural evaporation of water.And the substantial ion-PPy interaction enables robust voltage generation from evaporation of various salt solutions.Moreover,an outstanding scaling ability is demonstrated by connecting 10 devices in series that generate a sustainable voltage of up to~2.5 V,sufficing to power many commercial devices,e.g.LED bulb and LCD screen. | Bingkun Tian Xiaofeng Jiang Weicun Chu Chunxiao Zheng Wanlin Guo Zhuhua Zhang | 2023 | International Journal of Smart and Nano Materials2023，14，2： | 1 |
| 19 | Microstructures and mechanical properties of fiber cells from Echinocactus grusonii cactus spine显示文摘Spine is the sharpest and hardest part of many plants,which contains highly aligned fiber cells.Here,we report the microstructures and mechanical properties as well as their correlation of single spine fiber cells(SFCs)from the cactus Echinocactus grusonii.It is found that the SFCs are 0.32–0.57 mm in length and 4.6–6.0μm in width,yielding an aspect ratio of 53–124.X-ray diffraction and Fourier transform infrared spectrophotometry show that the spine fiber is mainly made up of cellulose I with a crystallinity index up to^76%.Nanoindentation tests show that a natural spine presents a high modulus of^17 GPa.Removing hemicellulose and lignin from the SFC significantly reduces its modulus to^0.487 GPa,demonstrating the critical role of adhesives hemicellulose and lignin in affecting the mechanical properties of the SFCs.This finding sheds light on designing novel bio-inspired high-performance composite nanomaterials with aligned nanofibers,such as using hemicellulose and lignin as adhesive in making carbon nanotube fibers. | HUANG FengLing QIU Hu GUO WanLin | 2014 | Science China(Technological Sciences)2014，57，4： | 1 |
| 20 | Stress intensity factors for elliptical surface cracks in round bars with different stress concentration coefficient显示文摘 | Guo Wanlin Shen Haijun Li Haijun | 2003 | Int J Fatigue2003，25，8： | 1 |
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