Abstract
This paper reports a fabrication of detection device for micro/nanospace that detects absorbance of sample by photothermal effect. The device is integration of waveguide and micro/nanochannel and detects heat from sample based on wave-optics principle so that it is usable for detection in channel similar size to wavelength of light. Previously, we fabricated waveguide with femtosecond direct laser writing and verified detection principle of the device. In this study, we designed and fabricated new device for sensitivity improvement.