Abstract: A device comprising a photosensitive sorbent material is configured to concentrate a target chemical species. The photosensitive sorbent material has a stepped Type F-IV isotherm profile with a high working capacity and can adsorb the target chemical species in a porous open phase. The photosensitive material can be converted into a less porous closed phase upon exposure to light of a certain wavelength through a photochemical transformation to allow for desorption and collection of the target chemical species. The photosensitive material can be converted back to the open phase upon exposure to light of a different wavelength for regeneration and this process can be repeated cycles of adsorption and desorption.

Abstract: An atmospheric water generation system absorbs water from an atmospheric air stream into a desiccant flowing along a flow path of a closed desiccant circulation loop. An amount of water output by the atmospheric water generation system depends on an energy expenditure and environmental conditions at the location of the system. To optimize the performance of the atmospheric water generation system, the system includes controllers and a control system that are configured initiate one or more atmospheric water generation operations based on time-based energy predictions for the system. The time-based energy predictions are generated using machine learning models that learn correlations between optimization inputs aggregated from a plurality of different sources and the performance of the atmospheric water generation system.

Abstract: A coating comprising a photosensitive sorbent composition is configured to be able to modulate the spectral signature of an object. The photosensitive sorbent composition has a stepped Type F-IV isotherm profile and can switch between a porous open phase which absorbs electromagnetic radiation and a less porous closed phase which reflects electromagnetic radiation. The photosensitive material can be converted to the closed phase upon exposure to light of a first wavelength through a photochemical transformation to allow for an object coated in the photosensitive material to be detectable by reflecting electromagnetic radiation. The photosensitive material can be converted from the open phase to the closed phase upon exposure to light of a second wavelength to camouflage an object coated the photosensitive by absorbing electromagnetic radiation.

Abstract: A device comprising a photosensitive sorbent material is configured to concentrate a target chemical species. The photosensitive sorbent material has a stepped Type F-IV isotherm profile with a high working capacity and can adsorb the target chemical species in a porous open phase. The photosensitive material can be converted into a less porous closed phase upon exposure to light of a certain wavelength through a photochemical transformation to allow for desorption and collection of the target chemical species. The photosensitive material can be converted back to the open phase upon exposure to light of a different wavelength for regeneration and this process can be repeated cycles of adsorption and desorption.