Surface-Enhanced Thermal Emission Spectroscopy with Perfect Absorber Metasurfaces

• DOI: 10.1021/acsphotonics.9b00254
• Publication Date: 2019-05-16T12:01:49Z
• Authors: Franziska B. Barho; Fernando Gonzalez...; Mario Bomers; Aude Mezy; Laurent Cerutti; Thierry Taliercio
• Keywords: 02 engineering and technology; 0210 nano-technology

Surface-enhanced spectroscopy techniques using plasmonic nanoantennas or metasurfaces help to reduce the detection limit for biochemical sensing. While infrared is an excellent tool identify a molecular species, typically expensive IR light source needed. We report surface enhanced technique based on thermal emission of III–V semiconductor metasurfaces. The presence species grafted modulates spectrum analogously modulation achieved in surface-enhanced absorption (SEIRA) spectroscopy. vibrational fingerprint detected due electromagnetic field enhancement obtained with metasurface. Because metasurface acts simultaneously as radiation and sensor chip, experimental setup simplified therefore more compact potentially cost-efficient. This novel approach (SETES) appealing miniaturized integrated sensing devices.