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Rapid and ultra‐sensitive detection of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is critical for early screening and management of COVID‐19. Currently, the real‐time reverse transcription polymerase chain reaction (rRT‐PCR) is the primary laboratory method for diagnosing SARS‐CoV‐2. It is not suitable for at‐home COVID‐19 diagnostic test due to the long operating time, specific...
Structurally‐colored photonic hydrogels which are fabricated by introducing hydrogels into thin films or photonic crystal structures are promising candidates for biosensing. Generally, the design of photonic hydrogel biosensors is based on the sensor‐analyte interactions induced charge variation within the hydrogel matrix, or chemically grafting binding sites onto the polymer chains, to achieve significant...
A critical requirement for the successful recognition of multiple analytes is the acquisition of abundant sensing information. However, for this to be achieved requires massive chemical sensors or multiplex materials, which complicates the multianalysis. Thus, there is a need to develop a strategy for the facile and efficient recognition of multiple analytes. Herein, we explore the angle‐dependent...
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