Shoham Bhadra
Shoham Bhadra, Ph.D., CFEI
Associate
Electrical Engineering & Computer Science
  • Bowie, MD

Dr. Bhadra’s expertise lies at the intersection of materials science and electrical engineering, with a focus on batteries and electronic devices. He is an expert in monitoring and failure analysis of lithium-ion, alkaline, NiCd, and NiMH batteries, and has also consulted on projects involving consumer electronics, residential and industrial fires, medical devices, software security, power generation and distribution, robotics, and solar panels. His scientific knowledge encompasses the fields of polymers and soft matter, nano-fabrication, electrochemistry, and non-destructive testing of energy storage materials. He has extensive experience in numerous characterization techniques such as ultrasonic testing, optical and electron microscopy, and electrochemical analysis methods such as electrochemical impedance spectroscopy, cyclic voltammetry, coulometry, and potentiometry.

Dr. Bhadra received his Ph.D. from Princeton University in Electrical Engineering and Materials Science, where his research focused on how the state of charge and state of health of a battery are correlated with the acoustic properties of the battery. He developed a novel method employing ultrasonics to monitor the changes in a battery’s acoustic properties in situ and in operando. He also quantified the effects of state of charge on the bounce height of an alkaline AA battery when dropped on its end, showing the ability of simple testing to mirror the performance of high-level characterization. He also has extensive experience investigating electrodeposited Zn growth morphologies in the presence of electrolyte additives, the use of nanoimprint lithography to pattern Si anodes for lithium ion batteries, and large-scale alignment of block copolymer nano-features using top-down and bottom-up approaches.

In addition to his experience with batteries, Dr. Bhadra has studied the gelation properties of aqueous dispersions of polyurethane and a polar modified polymer for cosmetic applications. He developed a novel formulation for mascara that used entrapped water within a waxy gel to improve the wear and ease of removal relative to standard formulations.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Electrical Engineering and Materials Science, Princeton University, 2015
  • M.A., Electrical Engineering, Princeton University
  • M.S.E., Materials Science and Engineering, University of Pennsylvania, 2010
  • B.S.E., Materials Science and Engineering, University of Pennsylvania, 2010,

    cum laude

  • National Science Foundation IGERT Fellow, 2011–2014

LICENSES & CERTIFICATIONS

Certified Fire and Explosion Investigator (CFEI) in accordance with the National Association of Fire Investigators National Certification Board, 21665-12249p

LANGUAGES

  • French
  • Bangla

Publications

Bhadra S, Hsieh AG, Wang MJ, Hertzberg BJ, Steingart DA. Anode characterization in zinc-manganese dioxide AA alkaline batteries using electrochemical-acoustic time-of-flight analysis. Journal of the Electrochemical Society 2016; 163(6):A1050-A1056

Bhadra S, Hertzberg BJ, Hsieh AG, Croft M, Gallaway JW, Van Tassell BJ, Chamoun M, Erdonmez C, Zhong Z, Steingart DA. The relationship between coefficient of restitution and state of charge of zinc alkaline primary LR6 batteries. Journal of Materials Chemistry A 2015; 3(18):9395–9400.

Hsieh AG, Bhadra S, Hertzberg BJ, Gjeltema PJ, Goy A, Fleischer JW, Steingart DA. Electrochemical-acoustic time of flight: In operando correlation of physical dynamics with battery charge and health. Energy & Environmental Science 2015; 8(5):1569–1577.

Chamoun M, Hertzberg BJ, Gupta T, Bhadra S, Van Tassell BJ, Erdonmez C, Steingart DA. Hyper dendritic zinc foam anodes. NPG Asia Materials 2015; 7(4):e178.

Mills EN, Cannarella J, Zhang Q, Bhadra S, Arnold CB, Chou SY. Silicon nanopillar anodes for lithium-ion batteries using nanoimprint lithography with flexible molds. JVST B 2014; 32(6):06FG10.

Selected Presentations

Bhadra S, Goy A, Gjeltema PJ, Fleischer J, Steingart DA. In operando low cost physical interrogation of alkaline batteries. Oral presentation, MRS Spring Meeting & Exhibit, San Francisco, CA, 2015.

Bhadra S, Hertzberg BJ, Gjeltema PJ, Goy A, Van Tassell BJ, Gallaway JW, Chamoun M, Erdonmez C, Zhong Z, Croft M, Fleischer JW, Steingart DA. Poster presentation, Nanomaterials for Applications in Energy Technology GRC/GRS Ventura, CA, 2015.

Bhadra S, Hertzberg BJ, Gjeltema PJ, Van Tassell BJ, Gallaway JW, Chamoun M, Erdonmez C, Steingart DA. Bouncing alkaline batteries: A basic solution. Oral presentation, MRS Fall Meeting & Exhibit, Boston, MA, 2014.

Bhadra S, Hertzberg BJ, Van Tassell BJ, Gallaway JW, Chamoun M, Erdonmez C, Steingart DA. Bouncing alkaline batteries: A basic solution. Oral presentation, ECS & SMEQ Joint International Meeting, Cancun, Mexico, 2014.

Patents

US Patent Application 20160223498: Apparatus and Method for Determining State of Charge (SOC) and State of Health (SOH) of Electrical Cells. (Steingart DA, Bhadra S, Hsieh AG, Hertzberg BJ, Gjeltema PJ, Rowley III CW) patent pending.

US Patent 9,078,835: Composition containing an aqueous dispersion of polyurethane and an oil-soluble polar modified polymer. (Bui H, Kanji M, Li C, Bavouzet BT, Bhadra S).

Knowledge

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Electrical Engineering and Materials Science, Princeton University, 2015
  • M.A., Electrical Engineering, Princeton University
  • M.S.E., Materials Science and Engineering, University of Pennsylvania, 2010
  • B.S.E., Materials Science and Engineering, University of Pennsylvania, 2010,

    cum laude

  • National Science Foundation IGERT Fellow, 2011–2014

LICENSES & CERTIFICATIONS

Certified Fire and Explosion Investigator (CFEI) in accordance with the National Association of Fire Investigators National Certification Board, 21665-12249p

LANGUAGES

  • French
  • Bangla