TE	Thermoelectric
LED	Light emitting diode
TEG	Thermoelectric generator
IC	Integrated circuit
MEMS	Microelectromechanical system
NASA	National Aeronautics and Space Administration
TEM	Transmission electron microscopy
FoM	Figure of merit
PGEC	Phonon glass, electron crystal
XRD	X-ray diffraction
SEM	Scanning electron microscopy
QCM	Quartz crystal microbalance
PCB	Printed circuit board
TDTR	Time domain thermoreflectance