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Korea Advanced Institute of Science and Technology – The first images of mid-infrared optical waves compressed 1,000 times captured using a highly sensitive scattering-type scanning near-field optical microscope. – KAIST researchers and their collaborators at home and abroad have successfully demonstrated a new methodology for direct near-field optical imaging of acoustic graphene plasmon fields. This strategy will provide a breakthrough for the practical applications of acoustic graphene plasmon platforms in next-generation, high-performance, graphene-based optoelectronic devices with enhanced light-matter interactions and lower propagation loss. It was recently demonstrated that ‘graphene plasmons’ – collective oscillations of free electrons in graphene coupled to electromagnetic waves of light – can be used to trap and compress optical waves inside a very thin dielectric layer separating graphene from a metallic sheet. In such a configuration, graphene’s conductio

South koreaYoung hee leeSergeyg menabdeSeok jangNature communicationsInstitute for basic science of koreaSamsung research funding incubation centerNature communications onSungkyunkwan universitySchool of electrical engineeringNational research foundation of koreaSamsung global research outreachSamsung electronicsDepartment of electricalUniversity of minnesotaInstitute of basic science