Joseph J. Brown
Joseph J. Brown has research interests that center on precision assembly, mechanical characterization, applications of nanostructures and nanoscale systems, and the interface of materials technologies and MEMS design. He has co-authored nine journal papers and six conference papers, and he is an inventor on three U.S. patents.
His Ph.D. thesis, finished in 2010 under the supervision of Prof. Bright, focused on nanomaterial tensile testing and the development of new interchangeable microsystems and microassemblies for micromechanical experiments.
He received an A.B. in Engineering Sciences from Dartmouth College, Hanover, NH, in 2000. He received the M.S. and Ph.D. degrees in Mechanical Engineering from the University of Colorado at Boulder in 2008 and 2010, respectively. He was recipient of a 2007 NSF Graduate Research Fellowship. At Dartmouth, he wrote an undergraduate thesis on the self-assembly of ordered arrays of gold nanoparticles in Langmuir films, under the supervision of Dr. Ursula J. Gibson.
Prior to coming to Colorado in 2006, he worked in small business environments on a broad range of technical projects. From 2002 to 2004, he led project work at Synergy Innovations, Inc., a Lebanon, NH, based idea and startup incubator. Projects included a system for monodisperse metal powder production, and electrohydrodynamic approaches to nanoparticle manufacture. In 2004, he helped found NanoComp Technologies, Inc., as a spin-out of Synergy Innovations, in order to develop inventions related to bulk fabrication of carbon nanotubes and applications for nanotubes.
Dr. Brown has additional interests in technology for energy production and efficiency of resource and energy use, and also in outdoor and creative activities.
- J.J. Brown, J.J. Brown, R.A. Hall, P.E. Kladitis, S.M. George, V.M. Bright. “Molecular Layer Deposition on Carbon Nanotubes.” ACS Nano, 24 September 2013, 7(9), 7812 – 7823. DOI:10.1021/nn402733g
Alkoxide polymers deposit conformally on CNT substrates and lead to improvement of bulk mechanical properties.
- J.J. Brown, D.A. Dikin, R.S. Ruoff, V.M. Bright. “Interchangeable Stage and Probe Mechanisms for
Microscale Universal Mechanical Tester.” Journal of Microelectromechanical Systems, April 2012,
21(2), 458 – 466. DOI:10.1109/JMEMS.2011.2177071.
Controlled microdevice actuation can be performed across temporary interfaces between
interchangeable microfabricated parts.
- J.J. Brown, V.M. Bright. “Thermal Actuators.” pp. 2680 – 2697 in: B. Bhushan (ed.), Encyclopedia of
Nanotechnology, Springer Science+Business Media B.V. 2012. DOI:10.1007/978-90-481-9751-4_313.
This article summarizes the design and operation of MEMS thermal actuators, and provides mathematical analysis of the most common thermal actuators.
- J.J. Brown, A.I. Baca, K.A. Bertness, D.A. Dikin, R.S. Ruoff, V.M. Bright. “Tensile measurement of
single crystal gallium nitride nanowires on MEMS test stages,” Sensors and Actuators A: Physical, April
2011, 166, 177 – 186. DOI:10.1016/j.sna.2010.04.002.
MEMS testers were used to collect direct tensile test data on GaN nanowires, and some sources of uncertainty in MEMS-based tensile tests were examined analytically.