Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples

Abstract

We report a notch-shaped coplanar microwave waveguide antenna on a glass plate designed for on-chip detection of optically detected magnetic resonance (ODMR) of fluorescent nanodiamonds (NDs). A lithographically patterned thin wire at the center of the notch area in the coplanar waveguide realizes a millimeter-scale ODMR detection area (1.5 × 2.0 mm2) and gigahertz-broadband characteristics with low reflection (∼8%). The ODMR signal intensity in the detection area is quantitatively predictable by numerical simulation. Using this chip device, we demonstrate a uniform ODMR signal intensity over the detection area for cells, tissue, and worms. The present demonstration of a chip-based microwave architecture will enable scalable chip integration of ODMR-based quantum sensing technology into various bioassay platforms.

Graphical abstract: Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples

Supplementary files

Article information

Article type
Paper
Submitted
03 Feb 2022
Accepted
26 Apr 2022
First published
01 May 2022

Lab Chip, 2022, Advance Article

Glass-patternable notch-shaped microwave architecture for on-chip spin detection in biological samples

K. Oshimi, Y. Nishimura, T. Matsubara, M. Tanaka, E. Shikoh, L. Zhao, Y. Zou, N. Komatsu, Y. Ikado, Y. Takezawa, E. Kage-Nakadai, Y. Izutsu, K. Yoshizato, S. Morita, M. Tokunaga, H. Yukawa, Y. Baba, Y. Teki and M. Fujiwara, Lab Chip, 2022, Advance Article , DOI: 10.1039/D2LC00112H

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