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Photodynamic therapy: photosensitizers and nanostructures
The reactions of some structures to different external stimuli can be used for therapeutic purposes. In particular, in photodynamic therapy (PDT), a light-sensitive compound or structure, commonly named a photosensitizer (PS), is able to produce reactive oxygen species (ROS) after being irradiated with light Recent Open Access Articles in Frontiers …
Perovskites photovoltaic solar cells: An overview of current …
Hence, a semiconductor with a band gap of approximately 1.2–1.6 eV is ideal material for solar cells fabrication in the form of single junction. Hybrid perovskite films are direct band gap semiconductors with low bulk trap densities which have demonstrated significant luminous properties. The band gap of the hybrid perovskites can be tuned by ...
Light sensitive material: an introduction
Light sensitive materials are first of all sensitive materials, fragile in their substrates (celluloid and acetate, paper and glass) and volatile in their chemistry. There is a tendency to think of these …
How do photoelectric cells work?
The negative terminal is made from a light-sensitive material. When light photons fall on it, they force electrons to leap out of it and these are promptly attracted to the positive terminal, which collects them and channels them into a circuit, producing electric power. This basic design is called a photoemissive cell or phototube.
NIR-Remote Selected Activation Gene Expression in Living Cells …
An NIR-controlled gene expression system based on upconverting rods (UCRs) is demonstrated. The UCRs can harvest the "biocompatible" NIR light and convert it into local UV light, resulting in cleavage of the photosensitive molecule (4-(hydroxymethyl)-3-nitrobenzoic acid, ONA) and on-demand release of gene carriers, thus realizing target …
Regulatory Mechanisms of Retinal Photoreceptors Development …
Photoreceptors are critical components of the retina and play a role in the first step of the conversion of light to electric signals. With the discovery of the intrinsically photosensitive retinal ganglion cells, which regulate non-image-forming visual processes, our knowledge of the photosensitive cell family in the retina has deepened.
Special Issue : Chemical Research on Photosensitive …
Photosensitive materials may be composed of small molecular compounds, polymers, inorganic materials, or organic–inorganic hybrids. The key focus of this Special Issue is on the relationship between the structure, …
Light affects the prefrontal cortex via intrinsically …
In mammals, non–image-forming visual functions such as circadian photoentrainment, pupillary light response, and mood regulation by light exposure are dependent on a subpopulation of retinal ganglion cells …
Photosensitive cells, radiation filters and semiconductor materials …
Photosensitive cells employing photosensitive materials in crystal form are generally made as a thin elongated slab of single-crystal material having contacts at its ends and mounted on and insulated from a heat sink. In use the cell is connected by its end contacts in a suitable detection circuit. The thickness of the thin-slab is generally ...
Photosensitive Materials: Optical properties and applications
The characterization of the optical properties of photosensitive glasses. Understanding the relationship between optical and structural properties and the methods that can be …
Photosensitive ion channels in layered MXene membranes …
Characterization of photosensitive MAC membrane. The MAC membrane is a photosensitive lamellar-structured ion channel. The MAC components exhibited negative surface charges (Supplementary Fig. 1 ...
What are photosensitive materials?
Photosensitive materials are advanced by high production efficiency, high energy utilization rate, low organic volatile matter emission, and enhanced flexibility in coating various substrates, such as paper, plastic, leather, metal, glass, and ceramics. ... naphthoquinone photosensitizers, for extensive application use in solar cells, catalysis ...
MS2 (M = W, Mo) photosensitive thin films for solar cells
ELSEVIER Solar Energy Materials and Solar Cells 46 (1997) 115-121 Solar Energy Materials and Solar Cells MS2 (M = W, Mo) Photosensitive thin films for solar cells E. Gourmelona''*, O. Lignierb, H. Hadoudaa, G. Couturierb, J.C. Bern~dea, J. Teddb, J Pouzeta, J. Salardenneb " Equipe Couches Minces et Materiaux Nouveaux …
Recent progress in photoreactive crosslinkers in polymer network ...
Photochemically adaptable polymeric materials have gained importance in industrial fields as a photocontrolling technology because their shape and physical properties can be fine-tuned under light ...
Photoresponsive biomaterials for targeted drug …
We then examine phototunable cell culture platforms with special emphasis on the photochemical reactions that govern 4D …
Photosensitive Resin Materials: Types and …
The photosensitive pre-polymer, also known as an oligomer, is a low molecular weight pre-polymer capable of photo-curing, with a molecular weight typically between 1000-5000. It serves as the …
Explainer: How our eyes make sense of light
The tissue there, known as the retina, contains millions of light-sensitive cells. They are especially concentrated in an area called the fovea (FOH-vee-ah). ... Its chemical formula is H 2 O. Chemical also can be an adjective to describe properties of materials that are the result of various reactions between different compounds. …
Photosensitive materials
This chapter provides an overview of photosensitive materials that absorb light and, in so doing, attain properties that are distinctively different from those of non …
How do photoelectric cells work?
The negative terminal is made from a light-sensitive material. When light photons fall on it, they force electrons to leap out of it and these are promptly attracted to the positive terminal, which collects …
Recent Progress of Photosensitive Polyimides
Photosensitive polyimides (PSPIs) have been attracting great attention as insulating materials in microelectronic industry, and can be directly patterned to simplify processing steps.
Two-photon polymerization technique for microfabrication of CAD ...
We report on recent advances in the fabrication of three-dimensional (3D) scaffolds for tissue engineering and regenerative medicine constructs using a two-photon polymerization technique (2PP). 2PP is a novel CAD/CAM technology allowing the fabrication of any computer-designed 3D structure from a photosensitive polymeric material.
Thermal-controlled cholesteric liquid crystal wavelength ...
Xia et al. present a thermal-controlled cholesteric liquid crystal lens for photosensitive epilepsy patients by dynamically blocking harmful wavelengths. The lens can achieve over 98% light cutoff at critical wavelengths, and the filter can be switched via temperature variation. ... including the temperature and composition of the CLC material ...
Photoreceptors: Rods and cones
Rod cell Cone cell Photosensitive retinal ganglion cells: Structure of photoreceptor: Outer segment: contains the light-absorbing materials (photopigments) with the light-sensitive chromophore molecule retinal Inner segment: composed ellipsoid (mitochondria rich) and myoid (site of photopigment production) Cell body: (nuclear region)
Photosensitive Materials and Their Applications
Photosensitive materials represent a huge variety of materials of both inorganic and organic nature that are capable of changing their structural (chemical and/or physical) properties under light exposure.
Photo-responsive functional materials based on light-driven
Light: Science & Applications - Photo-responsive functional materials based on light-driven molecular motors. ... Bray, D. Cell Movements: From Molecules to Motility. (Garland, New York, 1992).
Photosensitive materials
Download Citation | Photosensitive materials | This contribution gives an overview over photosensitive materials. Materials, which belong to this class are materials, which absorb light and ...