Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays

• Elangovan Sarathkumar,
• Rajasekharan S. Anjana and
• Ramapurath S. Jayasree

Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82

• advances in photothermal LFAs and their application in detecting analytes. Keywords: lateral flow assay; nanoarchitectonics; photothermal; photothermal nanomaterials; signal amplification; Introduction Lateral flow assays (LFAs) are a versatile and convenient point-of-care testing (POCT) technique used

• , and magnetic materials [18][19]. Among them, noble metal nanostructures are a new class of photothermal nanomaterials with favourable characteristics to increase the sensitivity of an assay. For example, gold nanoparticles (GNPs) can generate a strong heat signal in addition to the visual colour

• change [20][21]. Generally, photothermal nanomaterials are being used in cancer therapy, removal of bacterial biofilms, and sensing applications [22][23][24]. Photothermal nanomaterials produce heat in response to the irradiation of photons at a particular wavelength [23]. Similarly, when plasmonic