Soo-Hyun Tark

 

Postdoctoral Fellow
Materials Science and Engineering
Northwestern University
Room: B560, Silverman Hall
Chemistry of Life Processes Institute
2170 Campus Drive
Evanston IL, 60208-3113

Phone:     (847) 467-2651 (L)
Facsimile: (847) 467-6573

Email: s-tark@northwestern.edu

 

 

Educational Background

2009 Ph.D., Materials Science & Engineering
Northwestern University
Evanston, IL
2003 B.S. Materials Science & Engineering
State University of New York at Stony Brook
Stony Brook, NY

Research Objective(s) and Approach

  • Fundamental/quantitative validation of the new electronic signal transduction and detection paradigm based on the MOSFET-embedded microcantilevers.
    • Simulation and experimental studies to improve and optimize sensor platform performance.
    • Evaluation of sensitivity, selectivity, and reproducibility of the MOSFET cantilever sensor platform with biomolecular and chemical detection experiments.
    • Cross-validation of MOSFET-embedded cantilever sensing performance with conventional optical deflection detection approach.
  • Optimization and application of novel receptors and their immobilization strategies for biological and chemical detection on microcantilevers.

Results

  • New electronic, label- and optics-free signal transduction based on MOSFET-embedded cantilevers allows real-time detection of biomolecular interactions with high sensitivity and selectivity by simple direct current measurement as demonstrated in the following results.

Selected Publication

  • Shekhawat G, Tark S, Dravid VP, "MOSFET-Embedded Microcantilevers for Measuring Deflection in Biomolecular Sensors", Science, 311 (5767): pp: 1592-1595 (2006)
  • Tark S, Srivastava A, Chou S, Shekhawat G, Dravid VP, "Nanomechanoelectronic Signal Transduction Scheme with Metal-Oxide-Semiconductor Field-Effect Transistor-Embedded Microcantilevers", Applied Physics Letters, Vol. 94 (10): article: 104101: DOI:10.1063/1.3093874 (2009)
 
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