With a Ph.D. in Physics earned at Texas A&M University, he has served as:

• Professor Emeritus, Department of Physics, University of Colorado (2005-present)
• Professor Adjunct, College of Music, University of Colorado (2008-2012)
• Visiting Professor, Department of Physics, Tokyo University of Science (2008,2009)
• Director, Center of  Nanoscale Science and Engineering, University of Kentucky (2005-2007)
• Professor  (visiting), Department of Electrical and Computer Engineering, University of Kentucky (2005-2007)
• Professor, Department of Physics, University of Colorado 1990-2005
• Distinguished Professor of Physics, University of Arkansas, 1986-89
• Technical Manager, Jet Propulsion Laboratory, California Institute of Technology, California, 1985-86
• Task Manager, Solar Energy Research Institute (National Renewable Energy Laboratory), Golden, Colorado, 1980-85
• Professor of Physics, Tulane University, New Orleans, Louisiana, 1975-81 (Assistant Professor 1967-70; Associate Professor 1970-75)
• Senior Research Scientist, Jet Propulsion Laboratory, California Institute of Technology, 1965-67

He is author of more than 270 refereed journal articles and 31 US patents; Founding editor of Marcel  Dekker Inc. (Taylor & Francis)  Applied Physics book series (7 books currently published)

Al has earned many honors in his scientific endeavors  including being selected as:

• Recipient of an international prize (2024)- a Medal of Honor “De Scientia et Humanitate Optime Meritis” (A Medal of the Highest Order for Science and Humanity) by the Czech Academy of Science. The medal was conferred by the President of the Czech Senate and by the President of the Czech Academy of Science at the opening ceremonies for the conference on Frontiers of Quantum and Mesoscopic Thermodynamics 2024. Two others given similar medals at the ceremony were John Mather, Physics Nobel Laurerate (2006) and former senior project scientist for the James Webb Telescope, and Peter Hanggi, recipient of the 1993 Lars Onsager Prize of the American Physical Society and other awards.
• Fellow of the American Physical Society – citation includes invention and development of lithium iodine cardiac pacemaker battery (This work was also cited in the awarding of two NASA outstanding achievement awards in 1970 & 1972).
• Person of the year, 1989, Superconductivity week, for co-discovery of the world’s highest critical-temperature superconducting material, a thallium cuprate.
• Member of the team which received the IR100 award on behalf of the National Renewable Energy Laboratory (NREL, formerly SERI) for the copper-indium diselenide solar cell developed jointly by Boeing and NREL
• Distinguished scientist award, American Association of Physics Teachers, 1986-87.
• Member of the Academy of Distinguished Graduates, Texas A& M University