Prof. Andrew Gellman

to 60] from the surface of single crystalline graphite. Desorption is observed to be a first-order process and the preexponent of the desorption rate constant has a value

ν {= 10}^{19.6 \pm 0.5} \sec^{- 1}

and is independent of the oligomer chain length. More interestingly, we find that the barrier to desorption has a nonlinear dependence on chain length and takes the form

Δ E_{des}^{‡} {= A + B n}^{α}

, with the exponent

α = 0.50 \pm 0.01

About Me

Andrew Gellman is the Thomas Lord Professor of Chemical Engineering at Carnegie Mellon University. He received a BS in Chemistry from the California Institute of Technology and a Ph.D. in Chemistry from the University of California at Berkeley. His research expertise is in the field of surface science and surface chemistry, with an emphasis on catalysis, corrosion, chirality, and enantioselectivity. In addition, his group has developed tools and methods for the high-throughput study of alloy surfaces spanning alloy composition space and for studies of structure-sensitive properties of crystalline surfaces spanning surface orientation space.

Prof. Andrew Gellman

Prof. Andrew Gellman

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