Microplastics pose a great threat to human health. These tiny plastic debris can enter our bodies through the water we drink and increase the risk of illnesses. They are also an environmental hazard; found even in remote ...
Nanomaterials
Apr 12, 2024
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184
Cells intake substances from the outside world by encapsulating them in vesicles called endosomes, which are subsequently transported throughout the cell. During the transport process, vesicles fuse with other intracellular ...
Cell & Microbiology
Apr 8, 2024
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17
Fossilized mating insects are an irreplaceable find for understanding the evolution of mating behaviors and life history traits in the deep-time record of insects.
Paleontology & Fossils
Apr 3, 2024
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66
To engineer proteins with useful functions, researchers usually begin with a natural protein that has a desirable function, such as emitting fluorescent light, and put it through many rounds of random mutation that eventually ...
Biotechnology
Apr 3, 2024
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7
Versatility and miniaturization of imaging systems are of great importance in today's information society. Microscopic imaging techniques have always been indispensable for scientific research and disease diagnosis in the ...
Optics & Photonics
Mar 29, 2024
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30
A new study provides insights into how a family of immune proteins in plants confers disease resistance. The study builds on previous research by the same research group, which highlighted the structural similarities of this ...
Molecular & Computational biology
Mar 28, 2024
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5
An article published in the journal Catalysis Communications describes a simple, efficient and sustainable approach to the degradation and quantitative monitoring of a mixture of polycyclic aromatic hydrocarbons (PAHs), emerging ...
Analytical Chemistry
Mar 26, 2024
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3
Mosquito-borne illnesses remain a formidable challenge threatening millions of people each year with diseases such as malaria, dengue, zika and chikungunya.
Biochemistry
Mar 18, 2024
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5
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength. It is a form of luminescence. In most cases, emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. However, when the absorbed electromagnetic radiation is intense, it is possible for one electron to absorb two photons; this two-photon absorption can lead to emission of radiation having a shorter wavelength than the absorbed radiation.
The most striking examples of fluorescence occur when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, and the emitted light is in the visible region.
Fluorescence has many practical applications, including mineralogy, gemology, chemical sensors (fluorescence spectroscopy), fluorescent labelling, dyes, biological detectors, and, most commonly, fluorescent lamps.
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