Yi Song

TL;DR: The ability to tune the selectivity of graphene through controlled generation of subnanometer pores addresses a significant challenge in the development of advanced nanoporous graphene membranes for nanofiltration, desalination, gas separation, and other applications.

TL;DR: It is shown that a widely tunable metasurface composed of optical antennas on graphene can be incorporated into a subwavelength-thick optical cavity to create an electrically tunable perfect absorber.

TL;DR: In situ control of antennas using graphene as an electrically tunable load in the nanoscale antenna gap is demonstrated and shows that combining graphene with metallic nanostructures provides a route to electrically Tunable optical and optoelectronic devices.

TL;DR: It is shown that the native oxide on the silicon presents a transport barrier for photogenerated holes and causes recombination current, which is responsible for causing the kink, and a simple semiconductor physics model is proposed that qualitatively captures the effect.

TL;DR: It is shown that the weak van der Waals potential of graphene cannot completely screen the stronger potential field of many substrates, which enables epitaxial growth to occur despite its presence, and is also applicable to InP and GaP.