... more papers by this authorHuajian Gao, Corresponding Author Huajian Gao Bio-Nano-Engineering Center, Max Planck Institute for ... more papers by this authorHuajian Gao, Corresponding Author Huajian Gao Bio-Nano-Engineering Center, Max Planck Institute for ...
Tópico(s): Diatoms and Algae Research
2003 - American Chemical Society | Biotechnology Progress
... my large number of co-authors. In particular, Huajian Gao, MPI Stuttgart, has been an indispensable colleague in ... farid@almaden.ibm.com †I am grateful to Huajian Gao for this contribution. Additional informationNotes on contributorsFarid F. ...
Tópico(s): Integrated Circuits and Semiconductor Failure Analysis
2003 - Taylor & Francis | Advances In Physics
P. F. Cervelli, S. Kenner, P. Segall,
... dimensional solutions” by Yijun Du, Paul Segall, and Huajian Gao P. Cervelli, P. CervelliSearch for more papers by ...
Tópico(s): Hydraulic Fracturing and Reservoir Analysis
1999 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Conggan Ma, Chaoyi Chen, Qinghe Liu, Haibo Gao, Qing Li, Huajian Gao, Yue Shen,
Based on neural network model, a method for quantitative sound quality (SQ) evaluation of the interior noise of a pure electric vehicle (PEV) is presented in this paper. The method can be divided into four steps. First, the interior noises under different speeds of a PEV are collected through the interior noise test of the PEV. Subsequently, one physical acoustic parameter (A-weighted sound pressure level) and six psychoacoustic parameters (loudness, fluctuation strength, tonality, roughness, articulation ...
Tópico(s): Acoustic Wave Phenomena Research
2017 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Industrial Electronics
Xingcheng Xiao, Weidong Zhou, Youngnam Kim, Ill Ryu, Meng Gu, Chongmin Wang, Gao Liu, Zhongyi Liu, Huajian Gao,
Si is an attractive negative electrode material for lithium ion batteries due to its high specific capacity (≈3600 mAh g –1 ). However, the huge volume swelling and shrinking during cycling, which mimics a breathing effect at the material/electrode/cell level, leads to several coupled issues including fracture of Si particles, unstable solid electrolyte interphase, and low Coulombic efficiency. In this work, the regulation of the breathing effect is reported by using Si–C yolk–shell nanocomposite which ...
Tópico(s): Advanced Battery Materials and Technologies
2015 - Wiley | Advanced Functional Materials
Ling-Tian Gao, Xi‐Qiao Feng, Huajian Gao,
A phase field method is developed to investigate the morphological evolution of a vesicle in an electric field, taking into account coupled mechanical and electric effects such as bending, osmotic pressure, surface tension, flexoelectricity, and dielectricity of the membrane. The energy of the system is formulated in terms of a continuous phase field variable and the electric potential. The governing equations of the phase field and the electric field are solved using the Galerkin weighted residual ...
Tópico(s): Fluid Dynamics and Thin Films
2009 - Elsevier BV | Journal of Computational Physics
Lina Gao, Xi‐Qiao Feng, Yaobao Yin, Huajian Gao,
An electromechanical liquid crystal model is developed for characterizing the equilibrium morphology of a lipid vesicle under coupled mechanical and electrical fields. A general equation that governs the vesicle shape is established, which incorporates the effects of elastic bending, osmotic pressure, surface tension, Maxwell pressure, as well as flexoelectric and dielectric properties of the lipid membrane. As an illustration of the model, the problem of an axisymmetric vesicle (e.g., a sphere or ...
Tópico(s): Force Microscopy Techniques and Applications
2008 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Daxiang Cui, Guiqiu Jin, Tianwen Gao, Tianbai Sun, Furong Tian, Giovani Estrada, Huajian Gao, Akinori Sarai,
Abstract Looking for novel breast cancer antigen epitopes is helpful for its treatment, diagnosis, and prevention. brcaa1 gene is mapped at 1q42.1-q43, its whole genome is 93.857 kb, including 18 exons and 17 introns. BRCAA1 protein is composed of 1,214 amino acids with 10 glycosylate sites, and shares 37% amino acid identity and an identical antigen epitope with Rb binding protein 1. The novel antigen epitope, SSKKQKRSHK, was predicted to locate in the region 610 to 619 sites, was synthesized, ...
Tópico(s): Gene expression and cancer classification
2004 - American Association for Cancer Research | Cancer Epidemiology Biomarkers & Prevention
Yan‐Bo Wang, Lifeng Wang, Hannah J. Joyce, Qiang Gao, Xiaozhou Liao, Yiu‐Wing Mai, Hark Hoe Tan, Jin Zou, Simon P. Ringer, Huajian Gao, C. Jagadish,
A significant size effect on the mechanical properties of GaAs nanowires (NWs) is reported. A remarkable elastic strain of ≈11% for NWs with diameters of 50–150 nm and obvious plastic deformation in NWs with diameters ≤25 nm are revealed. The Young's modulus of the NWs can be more than double that of bulk GaAs. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted ...
Tópico(s): Metal and Thin Film Mechanics
2011 - | Advanced Materials
Bin Chen, Jun Wang, Qiang Gao, Yujie Chen, Xiaozhou Liao, Chunsheng Lu, Hark Hoe Tan, Yiu‐Wing Mai, Jin Zou, Simon P. Ringer, Huajian Gao, C. Jagadish,
Quantitative mechanical testing of single-crystal GaAs nanowires was conducted using in situ deformation transmission electron microscopy. Both zinc-blende and wurtzite structured GaAs nanowires showed essentially elastic deformation until bending failure associated with buckling occurred. These nanowires fail at compressive stresses of ~5.4 GPa and 6.2 GPa, respectively, which are close to those values calculated by molecular dynamics simulations. Interestingly, wurtzite nanowires with a high density ...
Tópico(s): Semiconductor materials and interfaces
2013 - American Chemical Society | Nano Letters
Shubo Gao, Zhi Li, S. Van Petegem, Junyu Ge, Sneha Goel, Joseph Vimal Vas, Vladimir Luzin, Zhiheng Hu, Hang Li Seet, Darío Ferreira Sánchez, H. Van Swygenhoven, Huajian Gao, Matteo Seita,
In metallurgy, mechanical deformation is essential to engineer the microstructure of metals and to tailor their mechanical properties. However, this practice is inapplicable to near-net-shape metal parts produced by additive manufacturing (AM), since it would irremediably compromise their carefully designed geometries. In this work, we show how to circumvent this limitation by controlling the dislocation density and thermal stability of a steel alloy produced by laser powder bed fusion (LPBF) technology. ...
Tópico(s): High Entropy Alloys Studies
2023 - Nature Portfolio | Nature Communications
Fangyan Zhu, Jiantao Leng, Jin-Wu Jiang, Tienchong Chang, Tong‐Yi Zhang, Huajian Gao,
Recent studies on nanomechanical devices based on low-dimensional nanomaterials have revealed several different types of thermal fluctuation gradient induced tangential entropic forces (TEFs), including expulsion force, edge force, thermophoretic force, nanodurotaxis force, etc. While all these forces originate from thermal fluctuation gradients, they can take different forms for different problems and have been treated case-by-case in the literature. Here, we develop a unified theoretical framework ...
Tópico(s): Carbon Nanotubes in Composites
2022 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Qi Guo, Guijin Zou, Xuliang Qian, Shujun Chen, Huajian Gao, Jing Yu,
Abstract Marine mussels achieve strong underwater adhesion by depositing mussel foot proteins (Mfps) that form coacervates during the protein secretion. However, the molecular mechanisms that govern the phase separation behaviors of the Mfps are still not fully understood. Here, we report that GK-16*, a peptide derived from the primary adhesive protein Mfp-5, forms coacervate in seawater conditions. Molecular dynamics simulations combined with point mutation experiments demonstrate that Dopa- and ...
Tópico(s): Surface Modification and Superhydrophobicity
2022 - Nature Portfolio | Nature Communications
Zhao Cheng, Linfeng Bu, Yin Zhang, HengAn Wu, Ting Zhu, Huajian Gao, Lei Lu,
Materials containing heterogeneous nanostructures hold great promise for achieving superior mechanical properties. However, the strengthening effect due to plastically inhomogeneous deformation in heterogeneous nanostructures has not been clearly understood. Here, we investigate a prototypical heterogeneous nanostructured material of gradient nanotwinned (GNT) Cu to unravel the origin of its extra strength arising from gradient nanotwin structures relative to uniform nanotwin counterparts. We measure ...
Tópico(s): Advanced materials and composites
2022 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Yujia Wang, Xuan Zhang, Zihe Li, Huajian Gao, Xiaoyan Li,
Recent developments in mechanical metamaterials exemplify a new paradigm shift called mechanomaterials, in which mechanical forces and designed geometries are proactively deployed to program material properties at multiple scales. Here, we designed shell-based micro-/nanolattices with I-WP (Schoen’s I-graph–wrapped package) and Neovius minimal surface topologies. Following the designed topologies, polymeric microlattices were fabricated via projection microstereolithography or two-photon lithography, ...
Tópico(s): Polymer composites and self-healing
2022 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Christos E. Athanasiou, Xing Liu, Boyu Zhang, Truong Cai, Cristina Ramírez, Nitin P. Padture, Jun Lou, Brian W. Sheldon, Huajian Gao,
Tópico(s): Force Microscopy Techniques and Applications
2022 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Pingqiang Cai, Changxian Wang, Huajian Gao, Xiaodong Chen,
The knowledge of mechanics of materials has been extensively implemented in developing functional materials, giving rise to recent advances in soft actuators, flexible electronics, mechanical metamaterials, tunable mechanochromics, regenerative mechanomedicine, etc. While conventional mechanics of materials offers passive access to mechanical properties of materials in existing forms, a paradigm shift is emerging toward proactive programming of materials' functionality by leveraging the force-geometry- ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2021 - | Advanced Materials
Xing Liu, Christos E. Athanasiou, Nitin P. Padture, Brian W. Sheldon, Huajian Gao,
Significance Data-driven approaches have launched a new paradigm in scientific research that is bound to have an impact on all disciplines of science and engineering. However, at this juncture, the exploration of data-driven techniques in the century-old field of fracture mechanics is highly limited, and there are key challenges including accurate and intelligent knowledge extraction and transfer in a data-limited regime. Here, we propose a framework for data-driven knowledge extraction in fracture ...
Tópico(s): Drilling and Well Engineering
2021 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Yi Yan, Zilong Zhao, Xi‐Qiao Feng, Huajian Gao,
Tópico(s): Bone Tissue Engineering Materials
2021 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Matteo Andrea Lucherelli, Xuliang Qian, Paula Weston, Matilde Eredia, Wenpeng Zhu, Paolo Samorı́, Huajian Gao, Alberto Bianco, Annette von dem Bussche,
While the interaction between 2D materials and cells is of key importance to the development of nanomedicines and safe applications of nanotechnology, still little is known about the biological interactions of many emerging 2D materials. Here, an investigation of how hexagonal boron nitride (hBN) interacts with the cell membrane is carried out by combining molecular dynamics (MD), liquid-phase exfoliation, and in vitro imaging methods. MD simulations reveal that a sharp hBN wedge can penetrate a lipid ...
Tópico(s): Carbon and Quantum Dots Applications
2021 - | Advanced Materials
Jiu-Tao Hang, Yu Kang, Guang‐Kui Xu, Huajian Gao,
Living cells are a complex soft material with fascinating mechanical properties. A striking feature is that, regardless of their types or states, cells exhibit a universal power-law rheological behavior which to this date still has not been captured by a single theoretical model. Here, we propose a cellular structural model that accounts for the essential mechanical responses of cell membrane, cytoplasm and cytoskeleton. We demonstrate that this model can naturally reproduce the universal power- ...
Tópico(s): Gene Regulatory Network Analysis
2021 - Nature Portfolio | Nature Communications
Jipeng Fei, Bin Ding, See Wee Koh, Junyu Ge, Xingli Wang, Li Quan Lee, Zixu Sun, Mengqi Yao, Yonghao Chen, Huajian Gao, Hong Li,
Investigations on external electrostatic field (EEF)-enhanced liquid water evaporation have been reported decades ago, which suggest that molecular alignment and polarization tuned by EEF accelerating the phase change process could be responsible for EEF-enhanced water evaporation. However, a detailed study revealing the role of EEF in altering the intermolecular and intramolecular water structure is lacking. Herein, an EEF is proved to tune water state by accelerating the thermal movement of water ...
Tópico(s): Membrane Separation Technologies
2021 - Wiley | Advanced Science
Junyu Ge, Bin Ding, Shuai Hou, Manlin Luo, Donguk Nam, Hongwei Duan, Huajian Gao, Yee Cheong Lam, Hong Li,
Despite its advantages of scalable process and cost-effectiveness, nanoimprinting faces challenges with imprinting hard materials (e.g., crystalline metals) at low/room temperatures, and with fabricating complex nanostructures rapidly (e.g., heterojunctions of metal and oxide). Herein, we report a room temperature ultrasonic nanoimprinting technique (named nanojackhammer) to address these challenges. Nanojackhammer capitalizes on the concentration of ultrasonic energy flow at nanoscale to shape bulk ...
Tópico(s): Microfluidic and Bio-sensing Technologies
2021 - Nature Portfolio | Nature Communications
Guang Zhu, Yi Qin, Miao Meng, Suman Mallick, Huajian Gao, Xiaoli Chen, Tao Cheng, Ying Ning Tan, Xuan Xiao, Mei Juan Han, Mei Fang Sun, Chun Y. Liu,
Abstract The semiclassical models of nonadiabatic transition were proposed first by Landau and Zener in 1932, and have been widely used in the study of electron transfer (ET); however, experimental demonstration of the Landau-Zener formula remains challenging to observe. Herein, employing the Hush-Marcus theory, thermal ET in mixed-valence complexes {[Mo 2 ]-(ph) n -[Mo 2 ]} + ( n = 1–3) has been investigated, spanning the nonadiabatic throughout the adiabatic limit, by analysis of the intervalence transition absorbances. ...
Tópico(s): Molecular Junctions and Nanostructures
2021 - Nature Portfolio | Nature Communications
Pengfei Yang, Yaopeng Fang, Yanan Yuan, Shun Meng, Zihao Nan, Hui Xu, Haroon Imtiaz, Bin Liu, Huajian Gao,
The formation and control of surface creases in soft materials under compression have intrigued the mechanics community for decades and recently found many applications in tissue biomechanics, soft robotics and tunable devices. In spite of a rapidly growing literature in this field, existing methods of analysis often rely on a presumed crease configuration and consequently there is still a lack of profound theoretical understanding on crease nucleation. In this study, we propose a force based perturbation ...
Tópico(s): Textile materials and evaluations
2021 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Fan Jin, Qiqin Tang, Xu Guo, Huajian Gao,
Tópico(s): Numerical methods in engineering
2021 - Elsevier BV | Journal of the Mechanics and Physics of Solids
Yingchao Yang, Zhigong Song, Guangyuan Lu, Qinghua Zhang, Boyu Zhang, Bo Ni, Chao Wang, Xiaoyan Li, Lin Gu, Xiaoming Xie, Huajian Gao, Jun Lou,
Tópico(s): Boron and Carbon Nanomaterials Research
2021 - Nature Portfolio | Nature
Zhihao Li, Huajian Gao, Ruichen Shen, Caixin Zhang, Leisi Li, Yawei Lv, Li‐Ming Tang, Yaping Du, Quan Yuan,
Facet-selective nanostructures in living systems usually exhibit outstanding optical and enzymatic properties, playing important roles in photonics, matter exchange, and biocatalysis. Bioinspired construction of facet-selective nanostructures offers great opportunities for sophisticated nanomaterials, but remains a formidable task. We have developed a macromolecule-mediated strategy for the assembly of upconversion nanoparticles (UCNPs)/two-dimensional metal-organic frameworks (2DMOFs) heterostructures ...
Tópico(s): Advanced Photocatalysis Techniques
2021 - Wiley | Angewandte Chemie International Edition
Tópico(s): Ultrasound Imaging and Elastography
2021 - Springer Nature | MRS Bulletin
Qi Zhu, Qishan Huang, Guang Cao, Xianghai An, Scott X. Mao, Wei Yang, Ze Zhang, Huajian Gao, Haofei Zhou, Jiangwei Wang,
Abstract Advanced nanodevices require reliable nanocomponents where mechanically-induced irreversible structural damage should be largely prevented. However, a practical methodology to improve the plastic reversibility of nanosized metals remains challenging. Here, we propose a grain boundary (GB) engineering protocol to realize controllable plastic reversibility in metallic nanocrystals. Both in situ nanomechanical testing and atomistic simulations demonstrate that custom-designed low-angle GBs ...
Tópico(s): Metal and Thin Film Mechanics
2020 - Nature Portfolio | Nature Communications