美国麻省理工MIT研究生申请文书该如何写
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美国麻省理工MIT研究生申请文书该如何写

2022-08-13...

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此文从头到尾充满着对机械工程的热爱,让人感到作者每一件事、每一个research、每一个实习,都是为着最终极的目标——来到M1T读机械研究生,今后成为一名优秀的工程师而做的铺垫,激情洋溢、贯穿整篇文书。事后据MIT导师回忆,当时完全是被此封文书所打动,没有任何理由不录取。

I grew up in a small town in China where people struggle in poverty.

Some children are even sent to factories to work for food. My friend Jia Ma started to work in a local brick factory at the age of 14. I wished I could do something to help. Once upon reading an American history book, I was deeply impressed by how Henry Ford changed the industry and improved people’s life. Then, the dream of being a great engineer, started to grow in my heart.Thus, my career goal is to be a great engineer who designs and develops innovative products that can change people’s life, improve humans’ life quality, and make the world a better place.

In the year of 2008, I overcame the fierce competition in China for selection to top university and was admitted to Shanghai Jiao Tong University(SJTU). During my sophomore year, I did a two-month intern at Bosch with their ECU group (Engine Control Unit) and I realized that in today's engineering world all the mechanical parts are more or less controlled by electronics. It was my luck that SJTU happened to provide the dual degree program, which gave me the chance to study both Mechanical and Electrical Engineering and to enjoy the world class education at the University of Michigan. With my outstanding academic performance and extracurricular experiences, 1 stood out among the applicants and was admitted into the dual degree program.

The first year at U of M was full of surprises and challenges. Prof. O introduced MEMS to me during his office hours, and I found myself attracted by the miniature structures that can achieve novel functionality and better performances. I taught myself MEMS knowledge by reading textbooks and auditing courses. Knowing how precious the opportunity is to study in a world class university, I studied diligently and managed to get a perfect GPA.

In the middle of my junior year, I applied and was selected for The Summer Undergraduate Research Experience (SURE) program. Then, from February 2011 until the present, I have been doing research under Professor K.G.'s guidance on a novel MEMS pressure transducer project. It is a long term project requires interdisciplinary knowledge. I first studied the topics related to the project, including MEMS, acoustics, equivalent circuits, classic microphone designs, vibrations, finite difference method, and piezoelectric material I also studied publications related to the project, especially Dr.R.L.'s thesis. Later on, I applied the knowledge I learned and developed both of the theory and a corresponding set of complete simulation code for a novel design.

On the experimental part, I conducted calibrations for previous prototypes by comparison method in the anechoic chamber at the Acoustic and Vibration Lab. I conducted a second experiment by using a Polytech single point laser Doppler vibrometer to screen along the length of the cantilever bimorph beam to further determine piezoelectric coupling coefficient (d31) of AIN. 1 also joined a 5-day boot camp to learn programming in LabView and passed the certificate exam. In addition, I observed the process of fabricating a MEMS cochlea implant developed by Prof. G's student at the Lurie Nano Fabrication facility.

On the theoretical part, I developed the theory and simulation code for a more sensitive pressure transducer which has a xylophone like multi-resonance structure made of AIN and Mo bimorph. The idea is to parallel connect multiple cantilever beams with various dimensions and resonant frequencies together. After adding proper packaging to the system, the ideal sensitivity curve would show a stable trend even in high frequencies, which provides a wider usable frequency range than the traditional transducers. The code I developed accurately simulates the sensitivity curve, packaging and noises in the output signal. The code will help to optimize the design and predict the transducer performance. I will never forget the joy and pride I felt at the moment when the simulation result agrees with theory. It means what I developed contributes to the cutting edge research and will benefit someone else in the future.

Working on this interdisciplinary project has greatly expanded my knowledge in related areas, improved my skills in programming, and advanced my proficiency in use of experimental and simulation tools. Most importantly, I gained the ability to analyze and solve complicated problems independently.

During the first semester of my senior year, I worked full-time at Continental Automotive System. I analyzed the data, ran simulation and organized the huge database for the lane sensing and object detection system, which has cameras and radars mounted on the vehicle. 1 also collected and analyzed the raw data from various testing for a pedestrian protection system,which utilizes high precision pressure sensors to detect crashes. I found that innovative products today often rely on high performance sensors. From this work experience, 1 learned how engineers work in industry and realized a master education will bring me closer to my goal.

I am also a key member of the Supermileage vehicle team at U of M. The team aims to develop a car that has better fuel economy. I did CAD design of chassis components in Solidworks and ran stress analysis simulation in Ansys to achieve a minimized weight while maintain a safe stiffness. Through my experiences, 1 realized that to chase my dream need a graduate level education which can further improve my skills and expand my knowledge.

I foresee a promising future of MEMS technology. Numerous applications can be implemented if engineers have access to better sensors.With the aid of better fabrication technology, 1 believe better and smaller sensors will be developed. They may be mounted on vehicles to provide more information to the control system so that fewer accidents would happen. They may be used in monitoring health conditions so that more patients can be saved by early diagnosis. I am willing to dedicate my life to develop the MEMS technology, to design better sensors or even functional actuators, which could help in saving someone else’s loved ones.

Life is short, so why not spend every second of my life to do something meaningful and to get closer to my dream? MIT has a renowned reputation in MEMS area and has the best programs in all aspects of engineering. With all the faculties and resources, the master program and potentially future Ph.D.program at MIT will get me prepared for challenges along my way of being a great engineer, which is the most meaningful way to spend the following years of my life.


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