Plasmonics and photonics have been drawing attention in both academia and industry due to their use in an extensive range of applications, one of which includes optical sensing. The development of optical sensing technology not only contributes to the scientific research community as a versatile tool, but also offers substantial commercial value for smart city […]
Optical Security: Tunable-Resonator Upconverted Emission Color Printing
Viewing bank notes under ultraviolet or infra-red light is a common check for counterfeits. Doing so causes invisible inks to glow visibly and is one of the most tried and tested tricks in optical document security. Microprint is another technique used as an anti-counterfeiting tool. As the name suggests, microprints hide information on documents because […]
SUTD Researchers Resolve a Major Mystery in 2D Material Electronics
Schottky diode is composed of a metal in contact with a semiconductor. Despite its simple construction, Schottky diode is a tremendously useful component and is omnipresent in modern electronics. Schottky diode fabricated using two-dimensional (2D) materials have attracted major research spotlight in recent years due to their great promises in practical applications such as transistors, […]
Valleytronics Route Towards Reversible Computer
In many two-dimensional (2D) materials, electrons not only possess charge and spin, but further exhibits an unusual quantum feature known as “valley.” Simply speaking, electrons residing in many 2D materials can live in well-separated energy minima, and the “address” describing which minima these electrons belong to is known as “valley.” The use of this “valley […]