Meet the Experts

Find experts across Johns Hopkins involved in research and teaching related to environment, energy, sustainability and/or health. The following list is organized by the expert's last name. You can also search by area of expertise.

Learn more about the support E²SHI provides to Hopkins faculty, staff researcher or instructors.


Eric Johnson

Associate Research Scientist, Department of Biophysics, Krieger School of Arts and Sciences

Research Areas:
  • Enhanced algal photosynthesis for biofuel and biomass production
  • Gene delivery to algae
Keywords: Energy (Renewable)

Howard Katz

Professor, Dept of Materials Science and Engineering
Whiting School of Engineering

hekatz@jhu.eduFaculty Website

Research Areas:

Sensing environmental and medically relevant vapors, organic solar cells and thermoelectrics

Selected Publications

Besar, K., Yang, S., Guo, X., Huang, W., Rule, A.M., Breysse, P.N. (2014). “Printable ammonia sensor based on organic field effect transistor.” Organic Electronics, 15(11), pp. 3221-3230.

Lecover, R., Williams, N., Markovic, N., Reich, D.H., Naiman, D.Q., Katz, H.E. (2012). “Next-Generation Polymer Solar Cell Materials: Designed Control of Interfacial Variables.” ACS Nano, 6(4), pp. 2865-2870.

E²SHI-Supported Projects

Culture-free optoelectronic signaling to detect methicillin-resistant Staphylococcus aureus (MRSA) and other bacterial pathogens by multidentate antigen-nanoparticle agglomerization from natural and designed intermolecular interactions

Agricultural and industrial ammonia (NH₃) monitoring with organic sensor circuits

Keywords: Electrical engineering, Nanotechnology, Renewable energy, Materials synthesis and characterization

Joseph Katz

William F. Ward Sr. Professor, Department of Mechanical Engineering, Whiting School of Engineering

katz@jhu.eduFaculty Website

Research Areas:
  • Flow/turbulence/cavitation in turbomachines
  • Power generation and conversion
  • Oceanic & Atmospheric boundary layers
  • Fate of crude oil spills
  • Dynamics, behavior & distributions of plankton
Keywords: Energy (Fossil Fuel), Environmental Sciences, Mechanical Engineering, Water

Thomas Kempa

Assistant Professor, Dept of Chemistry
Krieger School of Arts & Sciences

tkempa@jhu.eduFaculty Website

Research Areas:
  • Synthesis of solid-state materials to help address extant challenges in environmental sustainability and in human health.
  • Development of diverse synthetic methods to make solid-state structures and devices embodying new phases, architectures, and topologies. Since these materials can exert unique control over critical physical processes (e.g. mass, charge, and energy transport), they can be used to study un-answered questions in basic science and to define advances in solar cells, catalysts, thermoelectrics, self-assembly, optics, electronics, and biological imaging.
Keywords: Energy, Air Pollution, Water, Waste/Resource Use

Rebekka Klausen

Assistant Professor, Dept of Chemistry
Krieger School of Arts & Sciences

klausen@jhu.eduFaculty Website

Research Areas:

Synthesizes energy-relevant materials.

Awards: JHU Catalyst Award recipient, 2017

Keywords: Energy, Chemistry, Nanomaterials

Enrique Mallada

Assistant Professor, Dept of Electrical and Computer Engineering
Whiting School of Engineering

mallada@jhu.eduFaculty Website

Research Areas:
  • Networked dynamical systems and their applications in engineering and science.
  • Developing analytical tools and control architectures to facilitate the integration of renewable energy in the electric power grid.
  • Designing mixed market and control mechanisms that can align economic and engineering objectives.

E²SHI-Supported Projects

Leveraging Dynamics, Sparsity and Nonlinearities for Secure and Reliable Power Grid Operation

Keywords: Renewable energy, Energy efficiency

Tyrel McQueen

Associate Professor
Department of Chemistry and Department of Physics and Astronomy, Krieger School of Arts and Sciences
Department of Materials Science and Engineering, Whiting School of Engineering

mcqueen@jhu.eduFaculty Website

Research Areas:
  • New materials for energy applications
Keywords: Energy (Electricity, Renewable), Materials Chemistry and Physics

Charles Meneveau

Louis M. Sardella Professor, Dept of Mechanical Engineering
Whiting School of Engineering

meneveau@jhu.eduFaculty Website

Research Areas:
  • Turbulence modeling and fluid dynamics for environmental, geophysical and engineering applications
  • Wind energy fluid mechanics, simulation

Selected Publications

Chamecki, M., & Meneveau, C. (2011). “Particle boundary layer above and downstream of an area source: scaling, simulations, and pollen transport.” Journal of Fluid Mechanics, 683, pp. 1-26.

Stevens, R.J.A.M., Gayme, D.F., Meneveau, C. (2014). “Large eddy simulation studies of the effects of alignment and wind farm length.” Journal of Renewable and Sustainable Energy, 6, 023105.

Yang, D., Chen, B., Marcelo, C., Meneveau, C. (2015). “Oil plumes and dispersion in Langmuir, upper-ocean turbulence: Large-eddy simulations and K-profile parameterization.” Journal of Geophysical Research, 120(7), pp. 4729-4759.

E²SHI-Supported Projects

Wind Integration Simulations Partnership for International Research and Education (WINDINSPIRE)

Keywords: Computer engineering, Renewable energy, Mechanical engineering

Tim Mueller

Assistant Professor, Dept of Materials Science and Engineering
Whiting School of Engineering

tmueller@jhu.eduFaculty Website

Research Areas:
  • Using computational methods to discover and design new materials
  • Materials for energy storage and conversion
  • Nanoscale materials
  • Materials informatics

Selected Publications

Cao, L., & Mueller, T. (2015). “Rational Design of Pt3Ni Surface Structures for the Oxygen Reduction Reaction.” Journal of Physical Chemistry, 119(31), pp. 17735-17747.

Mueller, T., Hautier, G., Jain, A., Ceder, G. (2011). “Evaluation of Tavorite-Structured Cathode Materials for Lithium-Ion Batteries Using High-Throughput Computing.” Chemical Materials, 23(17), pp. 3854-3862.

E²SHI-Supported Projects

Designing nanoscale alloy catalysts to reduce carbon dioxide.

Keywords: Computational materials science, Nanotechnology, Renewable energy

Christopher Overcash

Instructor, Engineering for Professionals, Whiting School of Engineering
Vice President, Environmental Discipline, KCI Technologies Inc.

covercash@jhu.eduFaculty Website

Research Areas:
  • Water and wastewater infrastructure sustainability, reliability and design
  • Infrastructure adaptation to climate change
  • Corporate environmental and social responsibility
  • Aeration of open water system to improve quality
  • Tidal pumping systems
  • Renewable energy systems
  • Atmospheric water generation system analysis
  • Marine and dredging projects and sustainable design
  • Analysis of environmental site contamination and remediation
Keywords: Infrastructure and Built Environment, Civil Engineering, Climate Change, Ecosystem/ Environmental Management, Environmental Policy, Resource Management, Transportation, Waste and Resource Use, Water

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The voyage of discovery lies not in finding new landscapes, but in having new eyes.
— Marcel Proust