A.T. Charlie Johnson
- Director, Nano/Bio Interface Center (2014-)
- Professor of Physics, University of Pennsylvania (2008-)
- Associate Professor of Physics, University of Pennsylvania (2001-2008)
- At University of Pennsylvania since 1994
- National Research Council Postdoctoral Fellow, National Institute for Standards and Technology (1992-93)
- ESPRIT Postdoctoral Fellow, Delft University of Technology (1990-92)
Ph.D, Harvard (1990)
B.S., Stanford University (1984)
Our group is interested in the nanometer-scale transport properties (charge, energy, spin, ...) of molecular and super-molecular systems. These systems are of rising interest both from the technological (possible future nanoelectronics!) and fundamental points of view. In order to study the electronic properties, we must first connect nanometer size objects to the outside world. To this end we use a variety of nanofabrication techniques including optical lithography, electron beam lithography, thin film deposition and etching approaches. Much of our work relies on facilities in the University of Pennsylvania Micro/NanoFabrication Laboratory. Once we have a molecular circuit, we measure its properties using a variety of techniques including: low-temperature magnetotransport, thermal conductivity measurement, and hybrid scanning probe techniques that let us measure local electronic properties with nanometer-scale resolution.
B.R. Goldsmith, J. J. Mitala, H. Josue, A. Castro, M. B. Lerner, T. H. Bayburt, S. M. Khamis, R. A. Jones, J. G. Brand, S. G. Sligar, C. W. Luetje, A. Gelperin, P. A. Rhodes, B. M. Disher, A. T. C. Johnson, ACS Nano. 5, 5408-5416 (2011)
Y. Lu, M. B. Lerner, Z. L. Qi, J. J. Mitala, J. H. Lim, B. M. Discher, A. T. C. Johnson, APL (2012)
Z. Lou, S. Kim, N. Kawamoto, A. M. Rappe, A. T. C. Johnson, ACS Nano. (2011)
Hybrids of a Geneticall Engineered Antibody and a Carbon Nanotube Transistor for Detection of Prostate Cancer Biomarkers, M. B. Lerner, J. D'Souza, T. Pazina, J. Dailey, B. R. Goldsmith, M. K. Robinson, A. T. C. Johnson, ACS Nano. (2012)
Phys 501 - Intro to Research
Electrical and Systems Engineering
Materials Science and Engineering
Astro Seminar: "ALMA observations of strongly lensed galaxies: A window into the small-scale structure of dark matter halos"
April 1, 2015 - 2:00 pm
Yashar Hezaveh (Stanford)
David Rittenhouse Laboratory A6
Condensed Matter Seminar: "How challenging is the path from nanoscience to nanotechnology? A computational condensed matter physicist perspective"
April 1, 2015 - 4:00 pm
Vincent Meunier, Rensselaer Polytechnic Institute
April 2, 2015 - 12:00 pm
Professor Scott Davis (Dartmouth)
Donner Auditorium, Basement Donner Building- 3400 Spruce St.