Tommi Karhunen

University of Eastern Finland
Latest in Product Development
The Hidden Costs of Standing Still
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The Hidden Costs of Standing Still
August 6, 2026
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Rebuilding a Fire-Damaged Lamborghini Part II
August 6, 2026
The Hydrogen Sauna Boat.
Yamaha Motor Joins Proof of Concept Project to Make Hydrogen-Powered Sauna Boat
August 6, 2026
Ep548
Why Does the Air Force Want to Start B-52 Engine Production Before Testing Is Completed?
August 6, 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
The 2026 AI-Powered Financial Analysis Handbook
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The 2026 AI-Powered Financial Analysis Handbook
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Financial Storytelling in the Age of AI
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Transforming data-driven presentations into compelling stories that drive actual business decisions.
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