The Michigan Engineer News Center

In Memoriam: James Rienstra (1932 – 2019)

CEE mourns the loss of alumnus James Rienstra.| Short Read
Enlarge
IMAGE:  James ("Jim") Rienstra

James (“Jim”) Rienstra (BSE ’55) passed away peacefully on June 12, 2019, at the age of 87.

Born May 22, 1932 in Grand Rapids, Michigan, Rienstra earned his bachelor’s degree in Civil Engineering from the University of Michigan in 1955 and demonstrated his passion for U-M in all of the years following. He served as a civil engineer for the Michigan Department of Transportation for 39 years, where he was a major contributor in the development of the Interstate Highway 696. Jim and his wife Mary were season ticket holders for University of Michigan football and basketball games for over 60 years.

He is survived by his devoted and loving wife Mary; brother, Richard Rienstra; his five children, James, Jr. Rienstra, Daniel Rienstra, Jeffrey Rienstra, Amy Hofman, and Ann Washington; his beloved grandchildren; brother-in-law, Harold Vincent, sister-in-law, Janet Blank; and many nieces and nephews.

Jessica Petras

Contact

Jessica Petras
Marketing Communications Specialist

Department of Civil and Environmental Engineering

(734) 764-9876

GG Brown 2105E

The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read