Seminar: May 21, 2015, Dr. Reza Dabirian
TITLE: A Do It Yourself Atomic Force Microscope with Nanoscale Resolution for Student Training
SPEAKER: Dr. Reza Dabirian, Universidad de las Fuerzas Armadas, Sangolqui, Ecuador
DATE: Thursday, May 21st, 2015
TIME: 10:30 – 11:30 am
LOCATION: Elliott Building Room 062
Abstract: Atomic force microscope (AFM) used to be an expensive instrument for measuring nano structures, which also required experienced people to assemble and operate. A do it yourself AFM, which can be assembled and operated by students at the pregraduate level, can provide molecular resolution for a fraction of the cost of traditional instruments. A DVD optical pickup unit (OPU) with an astigmatic optics inside can replace traditional optical beam deflection mechanism, which can dramatically simplify the AFM optics. The DIY AFM also applies a piezo buzzer based low voltage scanner (operated with ±10 Volt) which enables a maximum X,Y,Z scanning range of 20, 20, 5 micron, respectively. These two systems are not employed in any of the commercial models today, yet they hold much promise to reduce operating costs and radically simplify operating the AFM. It is envisioned that this system, which can be assembled in a few hours, be utilized for educative purposes in student training before using commercial models.