title: Speed dependence of thermochemical nanolithography for gray-scale patterning.
abstract: Thermochemical nanolithography (TCNL) is a high-resolution lithographic technique and, owing to its fast speed, versatility, and unique ability to fabricate arbitrary, gray-scale nanopatterns, this scanning probe technique is relevant both for fundamental scientific research as well as for nanomanufacturing applications. In this work, we study the dependence of the TCNL driven chemical reactions on the translation speed of the thermal cantilever. The experimental data compares well with a model of the chemical kinetics for a first-order reaction. The impact of higher order reactions on the optimization of TCNL is addressed. The reported quantitative description of the speed dependence of TCNL is exploited and illustrated by fabricating controlled gradients of chemical concentration.
authors.affiliation: School of Physics, Georgia Institute of Technology, 837 State St., Atlanta, GA 30332-0430 (USA); Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, 315 Ferst Dr., Atlanta GA, 30332-0363 (USA).
authors.forename: Keith M
authors.initials: KM
authors.lastname: Carroll
authors.forename: Maitri
authors.initials: M
authors.lastname: Desai
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Giordano
authors.forename: Jan
authors.initials: J
authors.lastname: Scrimgeour
authors.forename: William P
authors.initials: WP
authors.lastname: King
authors.forename: Elisa
authors.initials: E
authors.lastname: Riedo
authors.forename: Jennifer E
authors.initials: JE
authors.lastname: Curtis
mesh_terms: D055598:Chemical Phenomena; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D011108:Polymers / Q000737:chemistry; D013696:Temperature
chemical_list: D011108:Polymers
keywords: kinetics; lithography; nanostructures; nanotechnology; thermochemistry