Fellows are members of AIChE elected in recognition of “significant professional accomplishments and contributions in engineering." Selections are based on nominations and decided by the organization's board of directors.

Lynn Loo

Loo, the Theodora D. ’78 and William H. Walton III ’74 Professor in Engineering, a professor of chemical and biological engineering, and a 2001 graduate alumna in chemical engineering, has driven major advances in solar-cell technology throughout her research career. While conventional solar cells are made from silicon, Loo has focused on other classes of materials, especially organic variants. By studying what she calls the “processing-structure-property” relationships of these materials, she has developed techniques for manufacturing organic electronics at far lower costs and/or longer lifetimes than traditional methods. This work has also enabled new forms for solar cells — in flexible, transparent films that can be used in a much wider range of applications than silicon. She has also led the way on creating stable, efficient solar cells from a class of materials called perovskites, which promise to further broaden the possibilities for solar energy.

From 2016 to 2021, Loo served as the second director of Princeton’s Andlinger Center for Energy and the Environment, where she commissioned the Net-Zero America Study. In 2021 she became the founding CEO of the Global Centre for Maritime Decarbonisation (GCMD), a Singapore-based nonprofit organization that aims to slash the carbon footprint associated with international shipping. Under her leadership, GCMD has launched several industry-first initiatives to lower the risks of adopting clean fuels, especially for first movers. They have developed and piloted safety and operational protocols for ammonia bunkering, a promising refueling process that had posed challenges for the industry. They have also demonstrated biofuels tracing solutions to strengthen supply chain integrity. Loo also co-founded a company in 2017, Andluca Technologies, a maker of smart-window products that draw on research from her Princeton lab.

Loo is a fellow of the American Physical Society (APS) and the Materials Research Society. Past honors include an Owens-Corning Award and the Alan P. Colburn Award from the American Institute of Chemical Engineers, a John H. Dillon Medal from the APS, an Alfred Sloan Fellowship and an NSF CAREER Award, among many others. In 2004 she was named one of the World’s Top 100 Young Innovators by the MIT Technology Review, and in 2012 she was recognized as a Young Global Leader of the World Economic Forum. Loo spent one year as a postdoctoral researcher at Bell Labs and five years as an assistant professor at the University of Texas-Austin. She joined the Princeton faculty as an associate professor in 2007.

Christos Maravelias

Maravelias, the Anderson Family Professor in Energy and the Environment and chair of chemical and biological engineering, studies how the many aspects of energy production and distribution fit together. These systems are often comprised of subsystems, all designed by different teams with unique goals in mind. Maravelias builds detailed computational models of these large systems and runs algorithms to analyze and improve them, part and whole. Targets of this optimization include increasing efficiency, lowering costs, reducing greenhouse gas emissions, and improving supply chains.

Maravelias has said this systems approach is essential to identifying the major technical and economic drivers of new technologies that can help guide future research.

Maravelias joined Princeton in 2020 after 16 years at the University of Wisconsin-Madison, where he was the Paul E. Elfers Professor. From 2011 to 2014, he served as the director of AIChE’s computing and systems technology (CAST) division, and from 2017 to 2019 he was the CAST division vice-chair and chair. He has been a team lead at the Great Lakes Bioenergy Research Center since 2017. 

Previous honors include a 2024 AIChE Sustainable Engineering Forum Research Award, a Production and Operations Management Society Applied Research Challenge Award and an NSF CAREER Award, among many others. Maravelias received a Ph.D. from Carnegie Mellon University, a master’s degree from the London School of Economics, and a bachelor’s degree from the National Technical University of Athens. In 2021, Maravelias published a monograph titled “Chemical Production Scheduling” with Cambridge University Press. He has published more than 200 papers in peer-reviewed journals.