We present a low-temperature inverse micelle solvothermal approach for the Synthesis of germanium nanocubes using the surfactant heptaethylene glycol monododecyl ether as a capping agent. X-ray diffraction results indicate that the as -prepared nanocubes are di a mond - type pure germ an.i uni. Tran Sm i S-sion elect ron microscopy observations show that the as-prepared germanium nanocubes have an edge length of 100 20 nm, highly crystallized.