[Science and Technology Institute NOW] POSTECH boosts waste-heat-to-electricity thermoelectric efficiency with hollow silicon nanotubes

From left, Professor Chang-Ki Baik of POSTECH’s Department of Electrical Engineering and Department of Convergence IT Engineering, and Ki-Young Kim, built-in M.S.-Ph.D. program scholar in Convergence IT Engineering. Courtesy of POSTECH

&■ POSTECH introduced on the eleventh {that a} analysis workforce led by Professor Chang-Ki Baik of POSTECH’s Department of Electrical Engineering and Department of Convergence IT Engineering has recognized a mechanism that enhances the efficiency of thermoelectric gadgets changing waste warmth into electrical energy by utilizing a hollow silicon nanotube construction. The analysis findings have been printed on May 5 (native time) within the worldwide journal “Nano Energy.” The workforce analyzed and defined with the idea of “phonon localization” that the hollow construction itself has a novel further impact of blocking warmth. This phenomenon refers to phonons—quasiparticles that describe vibrations transmitting warmth inside a strong as in the event that they have been particles—being confined to particular areas of a construction. Applying the proposed precept is anticipated to allow the conclusion of high-efficiency thermoelectric gadgets utilizing solely silicon semiconductor course of know-how, with out uncommon metals.

■ KAIST introduced on the eleventh that it held the discussion board “Global Science and Technology Cooperation Forum: Beyond Crisis, Toward Sustainable Cooperation” on the tenth on the Academic and Cultural Complex on the KAIST major campus, hosted by the Center for Global Partnership on Science and Technology for Sustainable Development (G-CODEs). The discussion board was organized to overview Korea’s worldwide cooperation methods and implementation capabilities amid quickly altering situations for world science and know-how collaboration pushed by intensifying technological hegemony, restructuring of worldwide provide chains, and rising uncertainty in vitality safety. This yr, discussions centered on concrete cooperation agendas similar to implementation capability and institutional foundations for worldwide cooperation, coaching of specialised personnel, worldwide joint analysis, and analysis safety.

– doi.org/10.1016/j.nanoen.2026.112007