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  ______________________________________ ___________________________________ DNA triggers shape-shifting in hydrogels, opening a new way to make 'soft robots' Summary: Biochemical engineers have used sequences of DNA molecules to induce shape-changing in water-based gels, demonstrating a new tactic to produce "soft" robots and "smart" medical devices that do not rely on cumbersome wires, batteries or tethers.  Biochemical engineers at the Johns Hopkins University have used sequences of DNA molecules to induce shape-changing in water-based gels, demonstrating a new tactic to produce "soft" robots and "smart" medical devices that do not rely on cumbersome wires, batteries or tethers. The research advance, supervised by three faculty members in the university's Whiting School of Engineering, is detailed in the Sept. 15 issue of the journal Science . The team members reported tha

  ________________________________________________________________________________   ________________________________________________________________________________   Wearable solar thermoelectric generator created Summary: Engineers have introduced a new advanced energy harvesting system, capable of generating electricity by simply being attached to clothes, windows, and outer walls of a building.      A recent study, led by Professor Kyoung Jin Choi in the School of Materials Science and Engineering at UNIST has introduced a new advanced energy harvesting system, capable of generating electricity by simply being attached to clothes, windows, and outer walls of a building. This new device is based on a temperature difference between the hot and cold sides. The temperature difference can be increased as high as 20.9 °C, which is much higher than the typical temperature differences of 1.5 to 4.1 °C of wearable thermoelectri