一定的英语交流能力（最好是雅思、托福）
简历
第一步，搜索相关领域的专家 这一步最主要是为了有目的的发出邮件以获得邀请函。大家可以用excel列一个表，把所有专家的信息包括邮箱、学校学院、城市、具体从事方向、发表多少篇文章全都列出来。
第二步，编辑邮件 这一步非常重要，你的邮件要让收到此邮件的导师一看就会接收你。首先邮件的标题要非常显著直接说明你这封邮件的内容，邮件内容可以要说明出你访学的目的，为什么访学，从哪里获知到导师的信息，为什么会选择此导师，访学资金由谁出，英语是不是已经考过，等等，然后可以编辑成模板，给哪个导师发就补充相应的内容。这里附上模板一封，可能不是最好，但是确实都得到了回复。斜体字部分大家需要做相应的修改。邮件标题名Inquire about the possibility of furthering my study ——名字Dear Prof. XX Sorry to bother you.I am writing to inquire about the possibility of furthering my study at your department as a visiting postdoc or scholar. My name is XX, an assistant professor at the XXXXX University, Guangdong Province, China. I received my Ph.D. degree under my advisors XXXX. My research interests include high-performance computer architecture, low energy consumption memory/storage system, and modeling and scheduling in parallel and distributed computing systems. The attachment is my detailed resume. After acquiring the Young Program of National Natural Science Foundation of China, I began thinking about furthering my study. I am really impressed by your work and publication that have been done in high-performance computer architecture, microprocessor/memory/storage system design,cloud/big data computing platforms, etc., and I want to work in your respected group to continue the research work in high-performance /low energy consumption memory system. Do you have any plan to recruit a visiting postdoc or scholar in your lab? If I could be granted the privilege to further my study under your guidance in memory/storage system, I should very grateful to you. I am planning to apply for the program funded by the Chinese Postdoctoral Council or China Scholarship Council. Then, the Chinese government will take care of my living expense during my twelve-month sojourn in American and pay my air tickets to and form American. I have acquired the Young Program of National Natural Science Foundation of China, and I've published 11 journal/conference papers, such as IEEE-TETC, IEEE-TCSI, Journal of System Architecture, etc. Thank you for your time and consideration. Sincerely yours,
第三步，准备简历。 简历就因人而异了，但我觉得简历还是做得简洁明了比较好，而且要分类详细，比如说你的科研成果，不能把所有成果都罗列在一起，你需要进行分类，比如项目，科研论文，专利等。另外，项目最好把研究时间与所获得的资助金额写清楚。论文格式也要统一，虽然这只是一件小事，但这体现了一个人的态度。
第四步，发邮件。 把你所准备的邮件模板填上当前导师的相应内容，并在附件附上你的简历，点击发送就可，然后就坐等回复。当然这过程中，你可能很多邮件都石沉大海，但是你不要灰心，有些邮件可能会自动转发到垃圾箱里，你可以锲而不舍的隔几天给同一个老师进行发送。
第五步，获取邀请函 在你收到导师的同意回信之后，你就可以和导师开始交谈并获取邀请函了。邀请函上你的访学日期要考虑清楚，因为这关系着你DS2019表上的日期，而2019表就是你能去美国访学的凭证以及呆在美国的起始时间。