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 Expert  721839

Expert in Nonlinear Optical Materials

Available for your Consulting and Expert Witness Needs

Texas (TX)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

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For the past 12 years Expert's research efforts have been directed toward the development of liquid crystalline and polymeric materials for nonlinear optical (NLO) applications. Thin films (1 - 100 micrometers) of these materials have very attractive mechanical and electronic properties such as fast response times, high polarizability, and processability, which facilitate their use in optoelectronic devices. The preparation of a material with a useful second order susceptibility, such as would be required for electro-optic modulation or second-harmonic generation (SHG), requires the removal of its inversion symmetry. Electric field poling of guest-host and chromophore-attached polymeric films has proven to be a successful procedure for removing the inversion symmetry. Among the many issues to address for these materials are the generation and retention of the orientation of the NLO chromophores. The research involves several experimental steps including preparation of polymers, spin-coating or casting of thin films of the polymers onto microscope slides, corona poling to align NLO chromophores, use of ordinary polarized linear-optical absorption measurements to monitor orientational orders and their temporal decay, and the use of a YAG laser to do the SHG measurements.

In the summer of 1988, he worked as a Research Scientist at the Materials Laboratory, Wright-Patterson AFB. There, he was responsible for the selection of a new nonlinear optical material to be used by the Air Force for the purpose of laser protection of pilots and sensors. After a literature search and testing, the material chosen, phthalocyanines, became one of the most-researched materials by all the military branches during the next few years...especially the Naval Research Laboratory. This is one of the most stable, optically nonlinear materials available today. He also set up a new gas chromatograph with a space-head sampler for analyzing vapors emitted from polymeric thin films.

While at the Phillips Laboratory, Expert set up a computerized optical table for frequency-doubling measurements, and performed these measurements on nonlinear optical polycarbonate samples prepared by his graduate students at WTAMU. He co-authored an article for the Journal of Applied Physics as a result of this effort.

For most of Expert's career, his research interests were in magnetic properties of polymetallic transition metal complexes. His early research involved the synthesis of new transition metal compounds and the characterization of them by various physical methods including magnetic susceptibility, EPR, UV-VIS, and IR. His interests soon focused on the magnetic properties of these compounds. On arriving at WTAMU in 1970, he built three magnetic susceptibility balances, one Gouy and two Faraday. The Faraday balances are equipped to measure temperature dependent magnetic properties from 1 - 400 K. Magnetic and EPR data were used to study electron spin coupling and structural properties of these compounds.

His research interests at WTAMU have been primarily with applications of information gained from spectral and magnetic investigations of transition metal complexes and structural and bonding problems in coordination chemistry.

During 1969-70 he conducted postdoctoral research at the University of North Carolina at Chapel Hill on magnetic and spectral properties of transition metal complexes. Considerable attention was given to systems with electron spin coupling; several first-example triplet ground state systems were investigated.


nonlinear optical material


optoelectronics science


polymeric material




non-linear optics


transition metal complex


magnetic property


spectral data




electron paramagnetic resonance


electron paramagnetic resonance spectroscopy

Expert started applying his background of magnetic and electronic properties of transition metal complexes to the synthesis and characterization of analgesic drugs. The purpose of this research was to prepare metal-containing drugs that would have at least the same or greater analgesic effect as the established drug, but would not irritate the stomach lining. The first metal-containing compound of ibuprofen, copper(II) ibuprofenate, was made and characterized in 1980. The first iron compound of aspirin was made in 1981. Other similar first-examples were studied (1983) and (1985).

pain medication





Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Lubbock, Texas;  and Amarillo, Texas.

Year   Degree   Subject   Institution  
1969   PhD   Inorganic Chemistry   University of North Texas  
1965   MS   Physics   Texas A&M University - Commerce  
1961   BS   Chemistry   Texas A&M University - Commerce  

Work History:
Years   Employer   Department   Title   Responsibilities

1970 to


(Undisclosed University)


Killgore Research Center


Professor of Chemistry


He teaches physical chemistry and does research on nonlinear optical materials.

1969 to 1970


University of North Carolina




Research Associate


He did research on the magnetic and spectral properties of transition metal complexes.

1962 to 1966


Texarkana College


Chemistry and Physics


Assistant Professor


He taught chemistry and physics courses.

Career Accomplishments:

Expert is a member of the following associations: ACS, APS, OSA and the SPIE.

Professional Appointments

For two years, Expert has been the chairman for the Department of chemistry at Expert's University.


Expert has received university Research Awards in 1990 and 2000.

His awards include: Mr. Science Award, Texarkana College, 1959; Most Outstanding Chemistry Major, East Texas State University, 1961; Research Excellence Award, Expert's University, 1990-91; Graduate Faculty Member of the Year, Expert's University, 1992-93; Best Thesis Award, Expert's University, 1993-94; Best Thesis Award, Expert's University, 1999-2000; and the Research Excellence Award, Expert's University, 1999-2000.

Publications and Patents Summary

He has 48 publications in chemistry, physics, and materials science journals. He has presented 18 research papers at national and international scientific society meetings, directed 19 M.S. theses at WTAMU, and directed over 100 undergraduate students in basic research in the aforementioned areas. He has also maintained outside research grants for almost every year since joining the WTAMU Chemistry Department.

Selected Publications and Publishers  
 - Journal of Materials Science: Materials in Electronics  
 - Optical Society of America  
 - Journal of Materials Science Letters  
 - Journal of Materials Science: Materials in Electronics  
 - Journal of Applied Physics  

Government Experience:
Years   Agency   Role  
1992 to 1994   US Air Force   Researcher  

Consulting Services:
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.


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