Abstract: The present invention provides lipid nanoparticles that are amenable to an irradiation at a wavelength at or above 850 nm, have an absorption peak from about 850 to 1100 nm wavelength, and comprise a high transition temperature lipid and a dye (e.g., a J-aggregate of a dye). In some embodiments, the dye (e.g., J-aggregate of the dye) is encapsulated in the lipid nanoparticle. In various embodiments, the present invention also relates to compositions comprising said lipid nanoparticles and methods of generating said lipid nanoparticles and compositions thereof. The present invention further relates to methods relating to the said lipid nanoparticles for imaging, detection, and treatment of diseases or disorders (e.g., phototherapy) in a subject.

Abstract: The present invention features an optical detection system for SARS-CoV-2 or other pathogens, which includes a specialty mask. The specialty mask incorporates a SERS nanopatch for accumulating pathogenic particles from a wearers breath. When the SERS nanopatch receives incident NIR light, backscattered light from the SERS nanopatch is detected by a receiver and analyzed for a Raman spectral shift. Detection of the Raman spectral signature from the SERS nanopatch allows for determination if SARS-CoV-2 or another pathogen is present. In addition to the mask with a nanostructured surface for collecting pathogenic material, the system includes a laser source directed at the nanostructured surface, a detection system to collect backscattered light, a spectral analysis system to detect Raman shifted light, and an analysis system for determining if SARS-CoV-2 or another pathogen is present. AI image processing may be used to steer the laser beam safely to the nanopatch, avoiding eye contact.