Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

Thanks to advanced semiconductor microfabrication technology, chip-scale integration and
miniaturization of lab-on-a-chip components, silicon-based optical biosensors have made …

Unidirectional radiation is important for various optoelectronic applications, such as lasers,
grating couplers and optical antennas. However, almost all existing unidirectional emitters …

Biosensors are extensively employed for diagnosing a broad array of diseases and
disorders in clinical settings worldwide. The implementation of biosensors at the point-of …

The realization of an efficient optical sensor based on a photonic crystal metasurface
supporting bound states in the continuum is reported. Liquids with different refractive …

Optofluidics—the synergistic integration of photonics and microfluidics—is a new analytical
field that provides a number of unique characteristics for enhancing the sensing …

This article reviews the recent progress in optical biosensors that use the label-free
detection protocol, in which biomolecules are unlabeled or unmodified, and are detected in …

A new class of planar optics has emerged using subwavelength gratings with a large
refractive index contrast, herein referred to as high-contrast gratings (HCGs). This seemingly …

Herein, we demonstrate a cavity-enhanced hyperspectral refractometric imaging using an all-
dielectric photonic crystal slab (PhCS). Our approach takes advantage of the synergy …

Refractive index (RI) sensors based on optical resonance techniques are receiving a high
degree of attention because of the need to develop simple, low-cost, high-throughput …