LPS Seminar

Date
Wed, Feb 22, 2017 3:00 pm - 4:00 pm
Location
LPS Seminar Room

Description

Speaker Name: Prof. Dan Prober

Speaker Institution : Yale

Title: Ultrasensitive far-IR and mid IR detectors

Abstract: Ultrasensitive far-IR and mid-IR detectors are an important area for developing future technology, where development of new materials and approaches is productive. We have conducted recent studies of single-layer graphene at T ≈100 mK to 20 K to determine the electron-phonon interaction in this 2D metal at low temperatures. This single-atom carbon layer has extremely low heat capacity and thermal conductance, enabling ultrasensitive photon energy detection. We use Johnson noise thermometry with an ultra-low noise cryogenic amplifier in our study, and have verified the theory for the clean limit electron-phonon coupling in graphene. Efficient detection of individual-far-IR photons, a previously unattainable goal, appears possible with these materials.
Biography:
Dr. Prober is a Professor of Applied Physics and Physics and Electrical Engineering at Yale. His main research interests are in nanosystems, superconductivity, quantum noise and ultrasensitive photon detectors. Dr. Prober is a Fellow of the APS, and has received two NASA research invention awards and two Fulbright Fellowships. He has also received a number of IBM Faculty Awards. His teaching ranges from a graduate course on superconductivity to seminars on ‘Science of Modern Technology’ and ‘Energy, Technology and Society’. Dr. Prober’s website is http://proberlab.yale.edu/
***********************************************
For more information please contact Paul Kolb [This email address is being protected from spambots. You need JavaScript enabled to view it.] or Ray Phaneuf [This email address is being protected from spambots. You need JavaScript enabled to view it.].
Note: LPS is located at 8050 Greenmead Drive in College Park. There is parking at LPS and overflow parking at the adjacent LTS building but not at the 4H building. LPS is on the UMCP shuttle route; take #105 for the Courtyard Apts. Please use the phone on the left hand side of the front door to call the receptionist for entry.