JAKE SALTZMAN, NEWS EDITOR [email protected]ROBIN RILEY, CONTRIBUTOR [email protected]The design and development of functional materials with tunable thermal conductivity — for example, to ensure the thermal dissipation in microelectronics devices — is necessary to prevent such devices from overheating. The ability to control the thermal conductivity of a material using an external stimulus, such as light, can increase the efficiency of thermoelectric energy conversion devices. 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