Department of Physics and Physical Sciences

Dr. Xiaojuan (Judy) Fan
Associate Professor
Department of Physics and Physical Sciences
Marshall University
One John Marshall Drive
Huntington, WV 25755
Office S101, Lab S151
Phone: (304) 696-3757
Fax: (304)696-2949

Research Interests
Infrared Absorption and Heat-Resistant Materials*
Microwave Absorbing Materials*
Thermoelectric Materials: Energy Conversion from Heat to Electricity*
Photovoltaics and photo catalysis
Nano porous structure and nanotechnology
Chemical sensing and biomaterial detection

*New Research Fields (2017 current)

Infrared Absorption and Heat-Resistant Materials Infrared absorption and heat-resistant materials could greatly improve solar cell efficiency. Heat energy from sun light is usually at infrared spectrum that is less than the energy band gap of light harvesting semiconductor in a typical solar cell. Infrared light and some visible light may waste as heat or just simply pass through the solar panel. Using a designed surface coater to absorb or reflect infrared light will enhance solar cell quality and efficiency.

Microwave Absorbing Materials The electromagnetic spectrum for detection purposes has been investigated intensively from ultra violet through visible, infrared, microwave and radio frequencies. Based on the same theory, conversely detection avoidance through absorbing materials also interests military applications. The exploitation of microwave (radar) absorbing materials has a long history since the advent of radar in the 1930’s. Absorber design has incorporated materials with different loss mechanisms and has make use of physical optics to optimize absorption over wide bandwidths. Absorbers therefor come with many different materials, shapes and structures.

Thermoelectric Materials Energy Conversion from Heat to Electricity: Thermoelectric effects enable direct conversion between thermal and electrical energy. Such devices provide an alternative for power generation and refrigeration. Promising thermoelectric materials show simultaneously high electrical conductivity, high thermoelectric power, and low thermal conductivity. These properties define thermoelectric materials with large molecular weights, complex crystal structure, and liquid-like transports. Thermoelectric system is an environment-friendly energy conversion technology with the advantages of small size, high reliability, no pollutants and feasibility in a wide temperature range.

Techniques and methods you will learn
Spin-coating organic/inorganic thin films
Self-assembly and self-organizing
Nano patterning and thin film fabrication
Optical and electronic property measurement
Review optical physics and energy conversion principles

Dr. Fan's research currently focuses on design, growth, and characterization of novel materials with emphasis on nanoscale thin films. The project is to develop a fast, easy and low cost process to fabricate nanoporous metal oxide thin films and membranes for solar energy conversion, photocatalysis, and biomaterials detections. Dr. Fan is also interested in the optical, electronic and magnetic properties of organic/inorganic hybrid systems and bulk materials for the applications of molecular memory and spintronic devices. Now exploring 3 new research fields: Infrared Absorption and Heat-Resistant Materials; Microwave Absorbing Materials; Thermoelectric Materials: Energy Conversion from Heat to Electricity.

1982-1989, BS & MS, in Applied Physics, Dept. of Physics, Anhui University, China
1996-1999, Ph.D in Condensed Matter Physics, Dept. of Materials Science and Engineering, University of Science and Technology of China

Research Experience
2007-Present, Associate Professor, Department of Physics, Marshall University
2004-2007, Research Specialist, Dept. of Chemistry, University of California at Santa Cruz
2003-2004, Visiting Scholar, Dept. of Chemistry, State University of New York
2000-2002, Postdoc, Tokyo Institute of Technology & National Institute of Materials Science of Japan

Professional Memberships
American Physics Society, Materials Research Society, American Chemistry Society

Research Projects
Infrared Absorption and Heat-Resistant Materials
Microwave Absorbing Materials
Thermoelectric Materials: Energy Conversion from Heat to Electricity
High Efficient Perovskite Solar Cells
Porous Thin Films for Dye-Sensitized Solar Cells
SAM-Based Molecular Junction Devices
Contact Printing and Stamp Deformation
Porous Doped Metal Oxides for Photocatalysis under Visible Light
Diluted Magnetic Semiconductors