Identifying threats, cybercrime and digital forensic opportunities in Smart City Infrastructure via threat modelling

Forensic Science International: Digital Investigation

The fluorescence quenching mechanism of tetrazine-functionalized fluorogenic labels with integrated π-conjugations: internal conversion to a dark state

Materials Chemistry

Gap solitons on an integrated CMOS chip

Nanophotonics

SUTD Author: Yee Ching Tok, Sudipta Chattopadhyay

SUTD Author: Shen Tianruo, Yadav Priya, Liu Xiaogang

SUTD Author: Choi, Ju Won; Sohn, Byoung-Uk; Sahin, Ezgi; Chen, George F. R.; Xing, Peng; Tan, Dawn T. H.

“Modern infrastructure like smart cities entice adversaries to commit criminal acts. Varied understanding of smart city infrastructure (SCI) and heavy workloads complicate cybercrime investigation. We propose a common definition of SCI, map offences, evidence and identified threats to assist investigators, and make publicly available a threat model template for adoption.” --- Yee Ching Tok

“Through quantum chemical calculations, we formalized a fluorescence quenching mechanism - internal conversion to a dark state (ICDS) to rationalize the fluorogenicity of tetrazine-functionalized labels with integrated π-conjugations. Based on the understanding of structure-property relationship, we further proposed several design strategies for developing high-performance tetrazine-fused fluorogenic labels with redshifted emission wavelengths and enhanced fluorescence turn-on ratios.”  ---  Liu Xiaogang

"We explore the gap solitons in a high-quality on-chip CMOS-compatible Bragg grating, enabling the observation of tunable slow light and temporal soliton compression. Our work showcases a new on-chip slow light configuration for optical delay lines and true optical storage, providing a new pathway for the tailored storage for light sources.” ---  Choi Juwon