Home         RESEARCH         People         Publications         Courses         Opening        /News		RESEARCH Solid-State and Biological Systems Interface The complexity, programmability, small size, and low cost of solid-state devices in direct contact with biological samples and living organisms can offer new capabilities in biology and biotechnology. We develop interfaces between solid-state & bio systems. At molecular level, we build massively parallel device arrays to analyze proteins & DNA in low-cost, chip-scale platforms. The interface uses large-strength charge/photon coupling as well as low-noise spin coupling. At cellular level, interconnected neurons cultured on solid-state chips are stimulated, trained & monitored electrochemically, where our long-term goals are: 1) helping understand, in biologically relevant terms, informatics of neural interactions; 2) interfacing sensory systems with ICs to enable autonomous machines that exploit adaptive functions of living organisms.
		1H spin resonance single-chip (CMOS) biomolecular sensor [article]
		Plasmonic Circuits Using Interacting Electrons in Low Dimension We experimentally study collective behaviors of interacting electrons in low dimension (1D) via their coupling with electromagnetic fields and quantum effects. Due to the unique dynamic and quantum-mechanical properties of electrons in low dimension, we envision that microwave techniques and as THz spectroscopy (with lasers) can be useful in examining the collective electron behaviors. The long-term goals are to develop frequency-domain methods to understand the physics of the interacting electrons (e.g., Luttinger-Tomonaga liquid in 1D) and to develop THz plasmonic circuits exploiting the collective motions of interacting electrons.
		Other Research NMR oil detection (with Schlumberger); Dynamic nuclear polarization; Complexity and cooperative behaviors; Quantum stochastic dynamics; IC design. Facilities Research Support Air Force Office of Scientific Research (AFOSR) Army Research Office (ARO) National Science Foundation (NSF) Schlumberger-Doll Research Center Cavium Networks Inc. National Institute of Health (NIH) Harvard Nanoscale Engineering and Science Center (NSEC) Electronics and Telecommunications Research Institute (ETRI) IBM T.J. Watson Research Center Analog Devices Inc. (ADI) Samsung Electronics Co. Ansoft Co. Sonnet Agilent Harvard University
Maxwell-Dworkin Laboratory, Harvard University, 33 Oxford Street, Cambridge, MA 02138, USA Donhee Ham: (617) 496-9451, Fax: (617) 495-2489, Email: donhee@seas.harvard.edu Labs: (617) 496-0142, (617) 496-0318, (617)-496-3361, (617) 496-3267, (617) 496-3163
© 2007 Donhee Ham. All Rights Reserved. Last modified December 15th, 2010.