I am pleased to hear of your interest in our graduate program. All admissions decisions are made by the School of Engineering and Applied Sciences Graduate Admissions Committee. Please see the following SEAS web pages:
I am sorry that I cannot correspond with each applicant individually. Regarding doing your Ph.D. research in my own research group, let me say that your application will be read very carefully. Each year I recommend to the Admissions Committee the admission of the 1 to 3 most outstanding students in the applicant pool with interests in this field, and the committee usually follows my recommendation. Good luck with the application process!