Sensitive, rapid and label-free biochemical sensors are needed for many applications. In
this protocol, we describe biochemical detection using FLOWER (frequency locked optical …

Label-free sensors are highly desirable for biological analysis and early-stage disease
diagnosis. Optical evanescent sensors have shown extraordinary ability in label-free …

Whispering gallery mode (WGM) microtoroid resonators are one of the most sensitive
biochemical sensors in existence, capable of detecting single molecules. The main barrier …

The nitric oxide radical plays pivotal roles in physiological as well as atmospheric contexts.
Although the detection of dissolved nitric oxide in vivo has been widely explored, highly …

High-quality-factor (Q) optical microcavities have attracted extensive interest due to their
unique ability to confine light for resonant circulation at the micrometer scale. Particular …

Sucrose provides both sweetness and energy by binding to both Venus flytrap domains
(VFD) of the heterodimeric sweet taste receptor (T1R2/T1R3). In contrast, non-caloric …

As the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus mutates,
finding effective drugs becomes more challenging. In this study, we use ultrasensitive …

Rapid detection of toxic and hazardous gases at trace concentrations plays a vital role in
industrial, battlefield, and laboratory scenarios. Of interest are both sensitive as well as …

G-protein coupled receptors help regulate cellular function and communication, and are
targets of small molecule drug discovery efforts. Conventional techniques to probe these …

Label-free detection techniques for single particles and molecules play an important role in
basic science, disease diagnostics, and nanomaterial investigations. While fluorescence …