VISUALIZATION AND MODELING OF THERMOMECHANICAL VOLTAGES USING PHOTOLUMINESCENCE

摘要

An electronic system may include a substrate, an electronic device bonded to the substrate, a plurality of photoluminescent particles disposed on the electronic device, a lighting device, a sensor, and a control module. The lighting device can illuminate the electronic device. The sensor can detect a first set of positions of the photoluminescent particles on the electronic device when the electronic device is not operating under a load and a second set of positions of the photoluminescent particles when the electronic device is operating under a load. The control module may determine the thermomechanical stresses of the electronic device based at least in part on a difference between the first set of positions and the second set of positions.