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<tr><td width="100%" colspan="2" height="100" align="center" valign="top"><br><p align="center">[<a href="读书计划.htm">回到开始</a>][<a href="读书计划.htm">上一层</a>][<a href="100.htm">下一篇</a>]
<hr><p align="left"><small>发信人: paopao (paopao), 信区: Oversea <br>
标  题: paopao的ps(正文，英文） <br>
发信站: 飘渺水云间 (Mon Jun  3 15:20:16 2002), 转信 <br>
  <br>
STATEMENT OF PURPOSE <br>
By Liangjun Jiang <br>
  <br>
  <br>
liangjunjiang@yahoo.com <br>
  <br>
Abstract: Firstly, my reasons for pursuing Ph.D are explained. Secondly, my <br>
academic background was stated in terms of my roles in the group and my own <br>
contribution. Finally, my intended field is presented. <br>
  <br>
Key words:  Ph.D    Background   Intended field <br>
  <br>
My reason for pursuing Ph. D degree keeps close contact with my aspiration t <br>
o be a research scientist. When pondering my future in 1998, I think it is t <br>
he best policy for me to contribute my knowledge of semiconductor materials <br>
and applications to the microelectronic industry of my motherland. For so, I <br>
 need to further my studies in a qualified Ph.D. program specializing in sem <br>
iconductor materials and applications. The department of Electrical and comp <br>
uter Engineering at Maryland University is well known for its contribution t <br>

o the semiconductor applications. And more importantly, in my view, its coll <br>
aboration experience with enterprise makes a clear way for the development o <br>
f Chinese microelectronic research. These are just the reasons I am applying <br>
 to Maryland University. <br>
  <br>
In my mind, I want to join the Microelectronic Device Lab of ECE department <br>
because I have cultivated a strong interest in this area during my graduate <br>
study. After receiving the B.E degree of Materials Science and Engineering a <br>
t Zhejiang University1 in 1998, I joined the State Key Laboratory of Silicon <br>
 Materials, one of China’s best institutions devoted to researches in semic <br>
onductor materials, for my graduate studies. During the first year as a mast <br>
er candidature, I took courses like Physics of Solid States, Characterizatio <br>
n Techniques of Semiconductor Materials, Physics Theory of Semiconductors, e <br>
tc. I benefited from these courses for further academic and research work. S <br>
tarting from September 1998, I focused my research on investigation of thin <br>
films growth by simulation method, as well as assisting to experimentally re <br>
search the growth of SiGe/Si HBT. <br>
  <br>
In the simulation project, I was responsible for designing algorithm and pro <br>
gramming. Above all, I proposed a 2-dimensional model by Monte Carlo method <br>
in order to make clear the initial stage of thin films growth. Different wit <br>
h methods advised by literature, which estimated the probability of diffusio <br>

n by comparing the energy of activation one by one, I advanced a new method <br>
to solve the time-consuming procedure. Having summed up the energies of aime <br>
d particle with respect to the substrate ones and nearest ones, I deduced pr <br>
obability equations of diffusion in terms of Arrhenius Equation. I used the <br>
equations and random functions to judge whether the particle would move and <br>
which direction it would do. In my view, not only was my method much more ti <br>
mesaving, but also more suitable. After all, movements of particles on subst <br>
rate were random. Probability method was a practical solution. Meanwhile, I <br>
joined the research on the epitaxial growth of Si1-xGex on substrate silicon <br>
 by UHV/CVD system, for the sake of evaluating my model and making better un <br>
derstanding of thin films growth. Furthermore, a 3-dimensional model was pro <br>
posed with the graphic user interface, paying specific attention to the grow <br>
th of Si1-xGex films2. Eventually, I was benefited the followings from my wo <br>
rk: (1)Start a new project3, thinking in a way different experimental work; <br>
(2)Make effective collaboration with people from different fields4; (3)apply <br>
 knowledge of lectures to practice5; (4) Develop problem-solving skills. <br>
In addition, I paid part attention to design the equipment of MOCVD. It was <br>
my duty to meeting requirements and accomplishing its draft 6. Meanwhile, I <br>
was also the web administrator of my lab. <br>
  <br>
I am very glad to learn that the Microelectronic Device Lab has the optoelec <br>
tronic device program from IEEE published papers, which is exactly my propos <br>

ed research interest. In my view, the future of SiGe technology appears capa <br>
ble of delivering viable products benefiting from its high speed and ease of <br>
 integration with CMOS processes. I do hope my extensive studies, both theor <br>
y and experiment of thin films growth, will do good to my further interests <br>
in SiGe/Si and Heterostructure devices. (I believe your program will provide <br>
 me an excellent platform to learn first-hand not only the theoretic and exp <br>
erimental foundations of materials, but also how to bring this knowledge to <br>
fruition in an interactive research setting. This is the main reason why I c <br>
hoose your program for my Ph.D. studies. ) On the other hand, I definitely k <br>
now the future challenge. I am proud of it; Actually, I think facing up with <br>
 challenges is the best policy in life. Moreover, I believe, with my intelli <br>
gence, perseverance and diligence, I will surely make a successful Ph.D cand <br>
idate. <br>
  <br>
With your emphasis on strong interaction between students and faculty, I bel <br>
ieve I can count on your faculty's help while I seek to scale higher intelle <br>
ctual heights and take up greater challenges. This will not only prepare me <br>
for a successful researcher, but also put me in a much better position to se <br>
rve my motherland.) <br>
  <br>
Signature: <br>
Date: <br>

  <br>
1 The overall rank of Zhejiang University is No.* in China in 2000. <br>
2 See my CV, please. <br>
3 It was the first time that my director assigned a simulation project in my <br>
 lab. <br>
4 I was appreciated the assistance from the departments of Physics Sci.., Co <br>
mputer Sci. and Eng.. <br>
5 Such as Mathematic Modeling. <br>
6 For the sake of saving money, the equipment was designed by us. It is manu <br>
factured in Changchun, P.R. China. <br>
7 Abstract from web page of ECE, Maryland University. <br>
  <br>
-- <br>
※ 来源:·飘渺水云间 Freecity.dhs.org·[FROM: paopao] <br>
</small><hr>
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