Abstract: A metalens including a transparent substrate and lenses is provided. The lenses are located on the transparent substrate. Each of the lenses includes first columnar microstructures continuously arranged along a first direction and second columnar microstructures continuously arranged along a second direction. A pitch of the first columnar microstructure is different from a pitch of the second columnar microstructure.

Abstract: A chiral molecule detector includes a light source, a photodetector, and a carrier. The carrier is configured to reflect at least part of light emitted by the light source to the photodetector. The carrier includes a substrate and a metal reflective layer. An upper surface of the substrate has a periodic hole array containing multiple holes. The metal reflective layer is located on the upper surface of the substrate, and covers a sidewall of the hole and a bottom surface of the hole.

Abstract: A pet container includes: a housing comprising a fan for creating an airflow; electronics for operating the fan; and a door configured to transition between a closed position and an open position for ingress and egress of a pet. The pet container defines a pet containment space, and the pet container comprises ducts through which the airflow created by the fan flows into the pet containment space for blowing air onto a pet. The fan preferably is an impeller and the at least one of the duct preferably is defined at least an interior passageway that is formed in the housing. The pet container further preferably includes a heater for heating the airflow; an aromatherapy diffuser; a light, laser, or array of LEDs for emitting infrared or near infrared light into the containment space with a wavelength of between about 620 and about 1000 nanometers for providing photobiomodulation.