Structural Transitions during Catalyzed Growth of Semiconductor Nanowires
半导体纳米线催化生长过程中的结构转变
基本信息
- 批准号:1206511
- 负责人:
- 金额:$ 55.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2012
- 资助国家:美国
- 起止时间:2012-07-01 至 2016-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Technical Description: This computational and experimental research project aims to answer several fundamental questions in the Au-catalyzed vapor-liquid-solid growth of Ge and Si nanowires. In particular, what mechanisms control kinking of nanowires and how does metastable hexagonal-close packed Au form when growth terminates? A three-dimensional continuum phase field model connects atomistic simulations and experimental observations, which use both ex-situ and in-situ characterization methods, and a rapid thermal chemical vapor deposition system. The project also investigates methods of controlling growth to avoid defects and to facilitate synthesis of abrupt doped junctions and axial Si-Ge heterostructures.Non-technical Description: This project has a broader impact on a wide range of materials research problems in which a close connection between atomistic modeling and experiments is desirable. Results of this project provide lecture materials on atomistic simulations, thermodynamics and kinetic processes in materials synthesis. The project engages undergraduates through summer research. The science education outreach activity introduces San Jose-area high-school students to crystal growth concepts through interactive Android Apps based on a two-dimensional phase field model.
技术描述:这项计算和实验研究项目旨在回答金催化的Ge和Si纳米线的气-液-固生长中的几个基本问题。特别是,是什么机制控制着纳米线的扭结,以及当生长终止时亚稳的六角密排Au是如何形成的?三维连续相场模型连接了原子模拟和实验观察,使用了非原位和原位表征方法,以及快速热化学气相沉积系统。该项目还研究了控制生长以避免缺陷的方法,并促进了突然掺杂结和轴向Si-Ge异质结的合成。非技术描述:该项目对广泛的材料研究问题有更广泛的影响,其中原子模拟和实验之间的密切联系是可取的。该项目的成果提供了关于材料合成中的原子模拟、热力学和动力学过程的讲座材料。该项目通过暑期研究吸引了本科生。科学教育推广活动通过基于二维相场模型的互动Android应用程序,向圣何塞地区的高中生介绍晶体生长的概念。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Wei Cai其他文献
GW29-e1902 Branch Ostial Optimization Treatment and Optimized Provisional T-Stenting with Polymeric Bioresorbable Scaffolds: Ex Vivo Morphologic and Hemodynamic Examination
GW29-e1902 分支口优化治疗和使用聚合物生物可吸收支架优化临时 T 形支架:离体形态和血流动力学检查
- DOI:
10.1016/j.jacc.2018.08.470 - 发表时间:
2018-10 - 期刊:
- 影响因子:24
- 作者:
Wei Cai;Lianglong Chen - 通讯作者:
Lianglong Chen
Transcriptome profiling analysis of sex-based differentially expressed mRNAs and lncRNAs in the brains of mature zebrafish (Danio rerio)
成熟斑马鱼 (Danio rerio) 大脑中基于性别的差异表达 mRNA 和 lncRNA 的转录组分析
- DOI:
10.1186/s12864-019-6197-9 - 发表时间:
2019-07 - 期刊:
- 影响因子:4.4
- 作者:
Yuan Wenliang;Jiang Shouwen;Sun Dan;Wu Zhichao;Wei Cai;Dai Chaoxu;Jiang Linhua;Peng Sihua - 通讯作者:
Peng Sihua
Understanding and manipulating the intrinsic point defect in α-MgAgSb for higher thermoelectric performance
了解和操纵α-MgAgSb 中的固有点缺陷以获得更高的热电性能
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:11.9
- 作者:
Chao Wang;Wei Cai;Jiehe Sui;Zhifeng Ren - 通讯作者:
Zhifeng Ren
Influence of Particle Size on the Spin Pinning Effect in the fcc-FePt Nanoparticles
粒径对 fcc-FePt 纳米粒子自旋钉扎效应的影响
- DOI:
10.1007/s10948-019-5091-7 - 发表时间:
2019-04 - 期刊:
- 影响因子:1.8
- 作者:
Jing Yu;Dong Han;Yao Ying;Liang Qiao;Jingwu Zheng;Wangchang Li;Juan Li;Wei Cai;Shenglei Che;Naoki Wakiya;Hisao Suzuki - 通讯作者:
Hisao Suzuki
Soundprint Feature Analysis of Main Transformers in a 500kV Substation
500kV变电站主变压器声纹特征分析
- DOI:
10.1109/icpeca56706.2023.10076202 - 发表时间:
2023 - 期刊:
- 影响因子:0
- 作者:
Xinyu Duan;Hao Cao;Lu Ling;Wei Cai - 通讯作者:
Wei Cai
Wei Cai的其他文献
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{{ truncateString('Wei Cai', 18)}}的其他基金
Deep Neural Network Machine Learning for Oscillatory Navier-Stokes Flows and Nonlinear Operators, and High Dimensional Fokker-Planck Equations
用于振荡纳维-斯托克斯流和非线性算子以及高维福克-普朗克方程的深度神经网络机器学习
- 批准号:
2207449 - 财政年份:2022
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
Collaborative Research: DMREF: Developing Damage Resistant Materials for Hydrogen Storage and Large-scale Transport
合作研究:DMREF:开发用于储氢和大规模运输的抗损伤材料
- 批准号:
2118522 - 财政年份:2021
- 资助金额:
$ 55.5万 - 项目类别:
Continuing Grant
Collaborative Research: Multi-Scale Modeling and Numerical Methods for Charge Transport in Ion Channels
合作研究:离子通道中电荷传输的多尺度建模和数值方法
- 批准号:
1950471 - 财政年份:2020
- 资助金额:
$ 55.5万 - 项目类别:
Continuing Grant
High Order and Efficient Numerical Methods for Simulating Electromagnetic Phenomena
模拟电磁现象的高阶高效数值方法
- 批准号:
1802143 - 财政年份:2017
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
Path Integral Monte Carlo Methods for Computing Polarizability Tensors of Nano-materials and Electrical Impedance Tomography
计算纳米材料极化张量和电阻抗断层扫描的路径积分蒙特卡罗方法
- 批准号:
1719303 - 财政年份:2017
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
Path Integral Monte Carlo Methods for Computing Polarizability Tensors of Nano-materials and Electrical Impedance Tomography
计算纳米材料极化张量和电阻抗断层扫描的路径积分蒙特卡罗方法
- 批准号:
1764187 - 财政年份:2017
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
High Order and Efficient Numerical Methods for Simulating Electromagnetic Phenomena
模拟电磁现象的高阶高效数值方法
- 批准号:
1619713 - 财政年份:2016
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
Student Travel: 7th International Conference on Multiscale Materials Modeling; Berkeley, California; 6-10 October 2014
学生旅行:第七届多尺度材料建模国际会议;
- 批准号:
1444609 - 财政年份:2014
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
A parallel Poisson/Helmholtz solver using local boundary integral equation and random walk methods
使用局部边界积分方程和随机游走方法的并行泊松/亥姆霍兹求解器
- 批准号:
1315128 - 财政年份:2013
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
Numerical Methods for Wave Propagations in Inhomogeneous Media
非均匀介质中波传播的数值方法
- 批准号:
1005441 - 财政年份:2010
- 资助金额:
$ 55.5万 - 项目类别:
Standard Grant
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