Houston, TX 77005
4:00 p.m. Wednesday, Sept. 25, 2013
On Campus | Alumni
Abstract: Strategies of particle lithography offer a versatile approach to generate test platforms of organosilanes, organothiols or nanoparticles on surfaces using chemical self-assembly. Procedures for particle lithography are based on the natural and spontaneous processes of self-assembly to define the size and arrangement of nanopatterns. The area of contact between the spheres and the surface determines the geometry of the nanostructures. For patterns of self-assembled monolayers, the interfacial endgroups can be designed to spatially define the surface selectivity for adsorption of proteins, nanoparticles or electrolessly deposited metals. With particle lithography, billions of nanostructured test elements can be prepared with high throughput, and exhibit relatively few defects. Platforms can be recycled for multiple successive measurements with different scanning probe characterizations (e.g. friction, phase imaging, etc.) to enable highly sensitive surface characterizations. Approaches for nanoscale lithography will be described for preparing molecular test platforms suitable for scanning probe studies.