Penn researchers have helped develop a nanotech device that combines carbon nanotubes with olfactory receptor proteins, the cell components in the nose that detect odors. Because olfactory receptors belong to a larger class of proteins that are involved in passing signals through the cell membrane, these devices could have applications beyond odor sensing, such as pharmaceutical research. The research was led by professor A. T. Charlie Johnson, postdoctoral fellow Brett R. Goldsmith and graduate student Mitchell T. Lerner of the Department of Physics and Astronomy in the School of Arts and Sciences, along with assistant professor Bohdana M. Discher and postdoctoral fellow Joseph J. Mitala Jr. of the Department of Biophysics and Biochemistry at Penn’s Perelman School of Medicine.