Qunyang Li

Phone Number: 215-898-4591
Email: qli_at_seas.upenn.edu
Office: 112 Towne

Education:

Ph.D., Engineering, (2008), Brown University
M.S., Applied Mathematics, (2007), Brown University
M.S., Engineering Mechanics, (2003), Tsinghua University
B.S., Engineering Mechanics, (2001), Tsinghua University

Research Interests:

We work at the intersection of mechanics, chemistry, and physics to bridge the atomic-scale origins of tribology to the macro-scale mechanical properties of materials. From atom, nano-scale stick-slip, to earth, geological-scale earthquake, I am exploring the mechanisms that govern these wide range of instability processes related to friction. Quantitative measurements using various surface/interface science techniques, e.g. scanning probe microscopy, are my major tools. Based on the experimental observations and the numerical simulations, understanding and modeling of the mechanisms are pursued.

Refereed Publications:

Micromechanics of Friction: Effects of Nanometer-Scale Roughness
Q.Li, K.-S. Kim. Proc. Roy. Soc. A, 464, 1319-1343 (2008).

Lateral Force Calibration of an Atomic Force Microscope with a Diamagnetic Levitation Spring System
Q.Li, K.-S. Kim, A. Rydberg. Rev. Sci. Instrum., 77, 65105/1-3 (2006).

Pattern Instability of a Soft Elastic Thin Film Under van der Waals Forces
S. Huang, Q. Li, X. Feng, S. Yu. Mech. Mater., 38, 88-99 (2006).

A Model for Computational Investigation of Elasto-Plastic Normal and Tangential Contact Considering Adhesion Effect
Q. Li, S. Yu. Acta Mech Sinica, 20, 165-171 (2004).

Awards:

The Outstanding Thesis Award, Division of Engineering, Brown University, 2008.
William N. Findley Award, Division of Engineering, Brown University, 2006.
James R. Rice Graduate Fellowship, Brown University, 2003.
Dean¡¯s Fellowship, Graduate School, Brown University, 2003.
Outstanding Thesis Award for master¡¯s thesis, Tsinghua University, 2003.
Graduate with Excellency, Tsinghua University, 2003.
Honorable Excellent Graduate Scholarship, First Class, Tsinghua University, 2002.
Consecutive scholarships for excellent undergraduate students, Tsinghua University, 1998-2000.

Links:

Diamagnetic lateral force calibrator (D-LFC)

Qunyang Li's Home Page