Cari F. Herrmann

Learn More
Cari F. Herrmann a,b, Frank W. DelRio a, David C. Miller a, Steven M. George b,c, Victor M. Bright a,∗, Jack L. Ebel d, Richard E. Strawser d, Rebecca Cortez d, Kevin D. Leedy d a University of Colorado, Department of Mechanical Engineering, Boulder, CO 80309, USA b University of Colorado, Department of Chemistry and Biochemistry, Boulder, CO 80309, USA c(More)
Presented in this paper is a study of the biocompatibility of an atomic layer-deposited (ALD) alumina (Al2O3) thin film and an ALD hydrophobic coating on standard glass cover slips. The pure ALD alumina coating exhibited a water contact angle of 55 degrees +/- 5 degrees attributed, in part, to a high concentration of -OH groups on the surface. In contrast,(More)
This paper describes how we use pilot testing to gain insight into middle school students’ thinking about thermal expansion and contraction, and how we use that information to improve the test items we are developing. From the students’ responses to pilot test items, we learned that students find it considerably more difficult to link the macroscopic and(More)
Halogen etching of Si(100) surfaces has long been considered to involve the selective removal of atoms from an essentially static surface. Here we show that vacancy sites produced by etching are mobile at elevated temperature and rearrange to form features that were considered to be the direct products of etching. We demonstrate that the etch features(More)
A dynamical scanning tunneling microscopy and density functional theory study of the thermodynamic stability of halogen-terminated Si(100) surfaces is presented. Significant steric repulsion is shown to exist on all halogen-terminated Si(100) surfaces. This repulsion is the driving force for a roughening phenomenon, which is favored for all halogens except(More)
  • 1