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|Abstract:||The ability to sense terahertz waves in a chip-scale technology operable at room temperature has potential for transformative applications in chemical sensing, biomedical imaging, spectroscopy and security. However, terahertz sensors are typically limited in their responsivity to a narrow slice of the incident field properties including frequency, angle of incidence and polarization. Sensor fusions across these field properties can revolutionize THz sensing allowing robustness, versatility and real-time imaging. Here, we present an approach that incorporates frequency, pattern and polarization programmability into a miniaturized chip-scale THz sensor. Through direct programming of a continuous electromagnetic interface at deep subwavelength scales, we demonstrate the ability to program the sensor across the spectrum (0.1–1.0 THz), angle of incidence and polarization simultaneously in a single chip implemented in an industry standard 65-nm CMOS process. The methodology is compatible with other technology substrates that can allow extension of such programmability into other spectral regions.|
|Citation:||Wu, X, Lu, H, Sengupta, K. (2019). Programmable terahertz chip-scale sensing interface with direct digital reconfiguration at sub-wavelength scales. Nature Communications, 10 (10.1038/s41467-019-09868-6|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||Nature Communications|
|Version:||Final published version. This is an open access article.|
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