title: Microgradient-heaters as tools for high-throughput experimentation.
abstract: A microgradient-heater (MGH) was developed, and its feasibility as a tool for high-throughput materials science experimentation was tested. The MGH is derived from microhot plate (MHP) systems and allows combinatorial thermal processing on the micronano scale. The temperature gradient is adjustable by the substrate material. For an Au-coated MGH membrane a temperature drop from 605 to 100 °C was measured over a distance of 965 μm, resulting in an average temperature change of 0.52 K/μm. As a proof of principle, we demonstrate the feasibility of MGHs on the example of a chemical vapor deposition (CVD) process. The achieved results show discontinuous changes in surface morphology within a continuous TiO2 film. Furthermore the MGH can be used to get insights into the energetic relations of film growth processes, giving it the potential for microcalorimetry measurements.
authors.affiliation: Institute for Materials, ‡Materials Research Department, and §Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-Universität Bochum , 44801 Bochum, Germany.
authors.forename: Robert
authors.initials: R
authors.lastname: Meyer
authors.forename: Sven
authors.initials: S
authors.lastname: Hamann
authors.forename: Michael
authors.initials: M
authors.lastname: Ehmann
authors.forename: Sigurd
authors.initials: S
authors.lastname: Thienhaus
authors.forename: Stefanie
authors.initials: S
authors.lastname: Jaeger
authors.forename: Tobias
authors.initials: T
authors.lastname: Thiede
authors.forename: Anjana
authors.initials: A
authors.lastname: Devi
authors.forename: Roland A
authors.initials: RA
authors.lastname: Fischer
authors.forename: Alfred
authors.initials: A
authors.lastname: Ludwig
mesh_terms: D002151:Calorimetry / Q000295:instrumentation; D020650:Combinatorial Chemistry Techniques / Q000295:instrumentation*; D006046:Gold / Q000737:chemistry; D006361:Heating / Q000295:instrumentation*; D010316:Particle Size; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: C009495:titanium dioxide; D006046:Gold; D014025:Titanium