'Photothermal AFM' - PHYS 396 Undergraduate Research Project Application Form

Supervisor's Name: Peter Grutter

Supervisor's Email: grutter [at] physics.mcgill.ca

Supervisor's Phone: 514 398-6483

Supervisor's Website: www.physics.mcgill.ca/~peter

Supervisor's department: Physics

Course number: PHYS 396 (Physics)

Term: Fall 2013-2014

Project start date: Tuesday, September 3, 2013

Project end date: Tuesday, December 3, 2013

Project title: Photothermal AFM

Project description (50-100 words suggested): Generally, in non-contact atomic force microscopy (nc-AFM) the force sensing microfabricated cantilever needs to be oscillated with an amplitude of a few nm. Mechanical changes related to a force interaction manifest themselves as a change in oscillation amplitude and frequency. The cantilever is most often oscillated by a piezo electric element. This however also can lead to detrimental mechanical vibrations of the AFM system. A possible solution is to photothermally excite the cantilever. The project involves the implementation of photothermal excitation in AFM by coupling the IR excitation to a fiber optical interferometer used to sensitively detect the deflection of the AFM cantilever.

Prerequisite: 1 term completed at McGill + CGPA of 3.0 or higher; or permission of instructor.

Grading scheme (The final report must be worth at least 50% of final grade): 60% final report, 20% lab performance and 20% oral presentation.

Project status: This project is taken. The professor has no more '396' projects this term.

Ethics, safety, and training: Supervisors are responsible for the ethics and safety compliance of undergraduate students. This project involves NEITHER animal subjects, nor human subjects, nor biohazardous substances, nor radioactive materials, nor handling chemicals, nor using lasers.