Mechanical Medical Device

Sung Jin Lee, Ph.D. Curriculum Vitae

Visa Status: Permanent Resident (Green card holder)

Address: *** *. ****** ****. #***, Los Angeles CA 90020

Contact info : 352-***-**** : **********@*****.***

EDUCATION

Ph.D., Mechanical Engineering Aug. 2005 –

Dec. 2011University of Florida, Gainesville, FL

Supervisor: Malisa Sarntinoranont, Ph.D

Dissertation: Characterization of the mechanical properties of soft materials: acute rat brain

tissue and hydrogels

B.S., Mechanical Engineering (Cum Laude) Jan. 2003 – Feb. 2005

University of Massachusetts, Amherst, MA

Supervisor: Jonathan P. Rothstein, Ph.D.

B.S., Mechanical Engineering Jan. 2000 – Aug. 2004

YeungNam University, Kyoungsan, South Korea

*Joint international degree from YeungNam University and University of Massachusetts

SKILLS

• Finite element analysis – Ansys Workbench 14.5/ Ansys Mechanical/ Explicit,

Abaqus

• Mechanical test- tension, compression, indentation and impact tests

• CAD - SolidWorks

• Program language - Matlab

• Statistical analysis- SAS (linear/non-linear regression, GLM, ANOVA, etc.)

• Machine shop experience -milling, drilling, lathes, etc.

• microscopy - light microscope, confocal microscope, fluorescent microscope, etc

• Small animal surgery, tissue slicing and handing

• Histology – cell viability test

• Microsoft Office (Word, Excel, PowerPoint, etc.)

PROFESSIONAL EXPERIENCE

Intern Mechanical Engineer, Advanced Bionics Jan. 2013 –

Present

• Performed FEA analysis and mechanical tests to optimize design of medical device

and to develop reliable new products.

o Generated/ modified 3D models of implantable medical device (cochlear implant)

and developed finite element models under dynamic loads using Ansys

Mechanical/ Explicit.

o Performed stress-strain analysis and failure analysis and optimized design to

avoid stress concentration and improve reliability and feasibility of cochlear

implants.

o Characterized mechanical properties of silicone rubbers, gold wire, titanium,

polyethylene fibers, etc. to develop reliable FE models.

Postdoctoral Researcher (volunteer), University of Florida Jan. 2012 –

June 2012 Mentor: Malisa Sarntinoranont, Ph.D

• Characterized nonlinear viscoelastic material properties of soft tissues using FE

analysis and microindentation test.

o Developed microindentation finite element model for hyper-viscoelastic material

and estimated optimized mechanical properties of ex-vivo tissue.

Research Assistant, University of Florida Jan. 2006 –

Dec. 2011

Supervisor: Malisa Sarntinoranont, Ph.D.

• Characterized mechanical properties of soft biomaterials and ex-vivo tissue.

o Developed non-linear elastic/ viscoelastic finite element models using Abaqus,

Ansys Mechanical and Adina.

o Performed mechanical test for soft tissue and hydrogels (Etafilcon A contact

lenses, agarose gels) using micro-indentation system.

• Characterized fluid transports properties (hydraulic conductivity, diffusivity and

porosity) of hydrated porous materials under controlled micro-flow system .

• Performed biological tests to estimate cell viability using histology techniques

(Fluoro-Jade C, DAPI and Propidium iodide etc.) and confocal fluorescent

microscope (Leica TCS SP5).

Teaching Assistant, University of Florida Jan. 2006 –

Dec. 2011

• Mechanics of Materials (EGM3520)

• Dynamics (EGM3401)

• Statics (EGM2511)

• Fluid Mechanics (EGM3353C)

Undergraduate Research Assistant, University of Massachusetts Mar.

2004 - Dec. 2004

Advisor: Jonathan P. Rothstein, Ph.D.

• Performed experiments to understand the role of temperature gradient effects on the

surface instability (sharkskin surface) in polyethylene extrusion.

HONORS

Outstanding International Student Research Award Nov. 2010

University of Florida, Gainesville, FL

Brain Korea 21 International Scholarship Jan. 2003 – Dec. 2003

South Korea Government

Academic Scholarship Aug. 2000 – Dec. 2002

YeungNam University, South Korea

PEER- REVIEWED JOURNAL PUBLICATIONS

1. Lee, S.J., Sun, J., Xie, H.K., King, M.A., Subhash, G., Sarntinoranont, M.,

"Measurement of Viscoelastic Properties of Multiple Anatomical Regions in Acute Rat

Brain Tissue Slices,” Submitted in Journal of the Mechanical Behavior of Biomedical

Materials, 2013.

2. Sun, J., Lee, S.J., Wu, Lei, Sarntinoranont, M., Xie, H.K., “Refractive index

measurement of acute rat brain tissue slices using optical coherence tomography, ”

Optic Express, 20(2): 1084-1095, 2012

3. Sarntinoranont, M., Lee, S.J., Kwon, J., Hong, Y., King, M.A., Moore, D.F., Subhash, G.,

“High-Strain-Rate Brain Injury Model Using Submerged Acute Rat Brain Tissue Slices,”

Journal of Neurotrauma, 29(2): 418-429, 2011

4. Lee, S.J., Sun, J., Flint, J.J., Guo, S., Xie, H.K., King, M.A., Sarntinoranont, M.,

"Optically Based-Indentation Technique for Acute Rat Brain Tissue Slices and Thin

Biomaterials," Journal of Biomedical Materials Research, Part B, 97B (1): 84-95, 2011.

5. Lee, S.J., Pishko, G.L., Mareci, T.H., and Sarntinoranont, M., "Characterization of an

Anisotropic Hydrogel Tissue Substrate for Infusion Testing," Journal of Applied Polymer

Science, 114:1992–2002, 2009.

6. Lee, S.J., Chen, X., Bourne, G.R., and Sarntinoranont, M., "Mechanical

Characterization of Contact Lenses by Microindentation: Constant Velocity and

Relaxation Testing," Acta Biomateriala, 4: 1560-1568, 2008.

7. Pishko, G.L., Lee, S.J., Wanakule, P., and Sarntinoranont, M., "Hydraulic Permeability of

a Hydrogel-based Contact Lens Membrane for Low Flow Rates," Journal of Applied

Polymer Science, 104(6): 3730-3735, 2007.

8. Miller, E., Lee, S.J., Rothstein, P.J., “The effect of temperature gradients on the

sharkskin surface instability in polymer extrusion through a slit die,” Rheologica Acta, 45:

943-950, 2006.

CONFERENCE PROCEEDING

1. Lee, S.J., Hong, Y., King, M.A., Moore, D.F., Sarntinoranont, M., Subhash, G., “Ex-vivo

Model of Blast-Induced Traumatic Brain Injury using a Polymer Split Hopkinson Bar,”

Neuroscience 2011, Washington, DC, Nov 12-16, 2011.

2. Sarntinoranont, M., Lee, S.J., Kwon, J., Hong, Y., King, M.A., Moore, D.F., Subhash, G., “Blast-Induced

Traumatic Brain Injury Model using Submerged Acute Rat Brain Tissue Slices,” BMES Annual Meeting

2011, Hartford, CT, Oct 13-15, 2011.

3. Lee, S.J., Sun, J., King, M.A., Xie, H.K., Sarntinoranont, M., “Viscoelastic Property

Changes of Acute Rat Brain Tissue Slices as a Function of Cell Viability.” ASME 2011

Summer Bioengineering Conference, Farmington, PA, June 22-25, 2011.

4. Sarntinoranont, M., Lee, S.J., Kwon, J., Hong, Y., King, M.A., Moore, D., Subhash, G.,

“High Strain-Rate Testing of Brain Tissue Slices: Blast-Induced Traumatic Brain Injury,”

63rd Annual Meeting of the American Academy of Neurology, Honolulu, HA, April 9-16,

2011

5. Lee, S.J., Sun, J., King, M.A., Xie, H.K., Sarntinoranont, M., “The Effect of Cell Viability

on the Mechanical Properties of Acute Rat Brain Tissue Slices”, BMES Annual Meeting

2010, Austin, TX, Oct 6-9, 2010.

6. Sun, J., Lee, S.J., Sarntinoranont, M., Xie, H.K., “In Vitro Refractive Index Measurement

of Acute Rat Brains Using Optical Coherence Tomography”, BMES Annual Meeting

2010, Austin, TX, Oct 6-9, 2010.

7. Kwon, J., Lee, S.J., Subhash, G., King, M.A., Sarntinoranont, M., “Shock Induced

Deformation and Damage in Rat Brain Slices”, ASME 2010 Summer Bioengineering

Conference, Naples, FL, June 16-19, 2010.

8. Lee, S.J., Flint, J.J., King, M.A., Sarntinoranont, M., “Characterizing Neuronal Viability

within the Trisynaptic Pathway in Rat Hippocampal Slices”, Neuroscience 2009,

Chicago, IL, Oct 17-21, 2009.

9. Lee, S.J., Sun, J., Guo, S., Xie, H., “An Optically-Based Indentation Technique for Thin

Soft Biomaterials,” BMES Annual Meeting 2009, Pittsburg, PA, Oct 7-10, 2009.

10. Lee, S.J., Bourne, G.R., Chen, X., Sawyer, W.G., and Sarntinoranont, M., “Mechanical

Characterization of Contact Lenses by Microindentation: Constant Velocity and

Relaxation Testing,” ASME 2008 Summer Bioengineering Conference, Marco Island,

FL, June 25-29, 2008.

11. Lee, S.J., Sarntinoranont, M., "Microindentation of Fixed Rat Brain Tissues," BMES

Annual Meeting 2007, Los Angeles, Sept. 26-29, 2007.

12. Lee, S.J., Evans, D., Pishko, G., and Sarntinoranont, M., “Anisotropy Transport in a

Hydrogel Implanted with Glass Fibers,” ASME 2006 Summer Bioengineering

Conference, Keystone, Amelia Island, Florida, Jun. 21-25, 2006.

13. Miller, E., Lee, S.J., Rothstein, P.J., “Modification of Elastic Flow Instabilities through

Temperature-induced Stratification of Rheological Properties”, 57thAnnual Meeting of the

Division of Fluid Dynamics, Seattle, WA, Nov 21-23, 2004.

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