Marcus Lay

Associate Professor of Chemistry

Projects > Purification and Separation

This group is investigating the deposition of SWNT networks from aqueous suspensions using several methods.  One potentially scalable method is the spin casting of SWNT networks.¹  Low densities of unbundled SWNTs were deposited in an iterative process that yielded a thin-film network having tunable electrical properties.  These deposits were characterized with atomic force microscopy (AFM), a semiconductor characterization system, and Raman microscopy.  Further, percolation theory can be used to model the electrical behavior of these systems.²  These types of thin-films have applications in new light-weight, energy efficient materials used for energy conversion and displays.


Electrical studies of spin cast SWNT networks.



Percolation theory explains the macroscopic performance of 2-dimensional networks deposited via various liquid deposition methods.


1. Q. Zhang, P. Vichchulada, and M. D. Lay, J. Phys. Chem. C, 114 (2010) 16292-16297

2. Q. Zhang, P. Vichchulada, M. Cauble,# and M. D. Lay, J. Mat. Sci., 44, (2009), 1206-1211