Han Li (SRC student) PhD (G4) candidate of Applied Physics, Vlassak’s Group
School of Engineering and Applied Sciences (SEAS), Harvard University Office: ESL 120, 40 Oxford St., Cambridge, MA 02138 Phone: (617) 496-8145 E-mail: hanli@fas.harvard.edu
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	M.S., Harvard University (2006)
	M.Phil (Materials science), University of Hong Kong, Hong Kong, China (2005)
	B.Eng (Manufacture, automation), Tsinghua University, China (2002)

Research interests

n Impact of porosity and pore structure on the mechanical properties, fracture and adhesion of nanoporous ultra low-k dielectrics films.

- Experimental techniques: four-point bend flexure, double-cantilever beam test, nanoindentation, and plane-strain bulge test.

- Computational: Finite element method and molecular dynamic simulation

n Porosity and pore structure characterization using ellipsometry, X-ray reflectivity and X-ray porosimetry.

n Nanoindentation methodology on the measurement of intrinsic properties of thin film on substrate; indentation crack and creep behaviors and mechanisms.

Peer-reviewed Publications

n Han Li and Joost J. Vlassak, "Determining the elastic modulus and hardness of an ultra-thin film on a substrate using nanoindentation",Journal of Materials Research (Focus Issue on Indentation), submitted (2008).

n Han Li, Youbo Lin, Ting Y.Tsui and Joost Vlassak, "The effect of porosity on the stiffness and fracture energy of brittle organosilicates", Journal of Materials Research, submitted (2008).

n H. Li, A.H.W. Ngan and M.G. Wang, “Continuous strain bursts in crystalline and amorphous metals during plastic deformation by nanoindentation”. J. Mater. Res., 2005. 20(11): p. 3072 .

n H. Li and A. H. W. Ngan, “Size effects of nanoindentation creep”. J. Mater. Res., 2004. 19(2): p. 513.

n H. Li and A. H. W. Ngan. “Indentation size effects on the strain rate sensitivity of nanocrystalline Ni-25at%Al thin films”. Scripta Materialia, 2005, 52(9): 827.

n Ngan, A.H.W., Wo, P.C., Zuo, L., H. Li and Afrin, N., (2006), "The Strength of Submicron-Sized Materials", International Journal of Modern Physics B, 20, 3579-3586.

n H. Li and A. H. W. Ngan. “Initial contact behavior of nanograined Ni-25at.%Al film during nanoindentation”, Materials Research Society 2004 Fall Meeting, Symposium R: Fundamentals of Nanoindentation and Nanotribology Ⅲ, Boston, 387.

n A. H. W. Ngan, G. Feng, B. Tang, H. Li and P.C. Wo, “Time-Dependent Plasticity in the Submicron Regime”. Kluwer Academic Publisher's book series Solid Mechanics and Its Applications, 2004. (Accepted)

Conference Presentations & Posters

n (2008) poster, Gordon Research Conference on Thin Film & Small Scale Mechanical Behavior, “Generalized Oliver-Pharr Method for Indentation of a Thin Film on Substrate”, Waterville, ME.

n (2008) talk, “Effect of Porosity on the Stiffness and Fracture Energy of Brittle Organosilicates Glasses (OSG)” Materials Research Society 2008 Spring Meeting, Symposium N: Materials and Processes for Advanced Interconnects for Microelectronics, San Francisco.

n (2007) poster, SRC-GRC/NYCAIST Packaging and BEP Fall Review

n (2006) poster, “Reliability of Porous Ultra Low-k Dielectrics: Fracture and the Effects of Environment”, SRC-GRC/NYCAIST Packaging and BEP Fall Review

n (2004) talk, “Initial contact behavior of nanograined Ni-25at.%Al film during nanoindentation”, Materials Research Society 2004 Fall Meeting, Symposium R: Fundamentals of Nanoindentation and Nanotribology Ⅲ, Boston.

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