Each time you have an employment interview, you should follow up with a thank-you note. This puts your name before the interviewer one more time. A thank-you letter lets the applicant know that you remembered them and appreciated the opportunity, and that will encourage the interviewer to consider you more favorably.
The following sample thank-you note demonstrates this idea:
Your Street Address
Your city, State, Zip Code
Dear [name of person]:
Thank you for the time and consideration you showed me yesterday. I appreciated the opportunity to speak with you about my experience in related fields and about my future goals.
I look forward to hearing from you in the near future, and I wish to thank you again for your courtesy.