Tommi Karhunen

University of Eastern Finland
Latest in Product Development
How to Calculate Capacity Utilization: A Manufacturer’s Guide
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How to Calculate Capacity Utilization: A Manufacturer’s Guide
June 9, 2026
The Dames Point Bridge spanning the St. Johns River in Jacksonville, Florida.
Quantum Sensors Could Spot Hidden Damage in the Thousands of 'Structurally Deficient' U.S. Bridges
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They Spent 9,400 Hours Trying to Build the Fastest Lego Car Ever Made
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'World's First' Seaglider Factory Opens in Rhode Island
June 17, 2026
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On the left is a schematic of a graphene field-effect-transistor used in this study. The device consists of a solar cell containing graphene stacked on top of a high-performance copper indium gallium diselenide (CIGS) semiconductor, which in turn is stacked on an industrial substrate (either soda-lime glass, SLG, or sodium-free borosilicate glass, BSG). The research revealed that the SLG substrate serves as a source of sodium doping, and improved device performance in a way not seen in the sodium-free substrate. On the right is a scanning electron micrograph of the device as seen from above, with the white scale bar measuring 10 microns, and a transmission electron micrograph inset of the CIGS/graphene interface where the white scale bar measures 100 nanometers.
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Glass Used to Optimize Graphene
Bringing the Power of Video AI Tools to the Plant Floor
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Bringing the Power of Video AI Tools to the Plant Floor
More from Tommi Karhunen
How to Save Big on Water and Energy in Your Facility
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How to Save Big on Water and Energy in Your Facility
Sustainability experts say this one adjustment slashes utility bill totals by thousands of dollars.
June 22, 2026