Photon Interaction
Photon Interaction - Related Videos
14:26
In vivo Quantification of G Protein Coupled Receptor Interactions using Spectrally Resolved Two-photon Microscopy
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Cited by 6 •
2011
By employing a spectrally resolved two-photon microscopy imaging system, pixel-level maps of Förster Resonance Energy Transfer (FRET) efficiencies are obtained for cells expressing membrane receptors hypothesized to form homo-oligomeric complexes. From the FRET efficiency maps, we are able to estimate stoichiometric information about the oligomer complex under study.
04:32
Two-Photon In Vivo Imaging of the Mouse Retina
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2025
Source: Wang, Z., et al. Transpupillary Two-Photon In Vivo Imaging of the Mouse Retina. J. Vis. Exp. (2021).This video demonstrates a technique for in vivo retinal imaging using two-photon microscopy. Anesthetized mice are prepared for imaging by securing their heads, Applying eye lubricant, and placing a coverslip over the eye. Retinal ganglion cells (RGCs) expressing fluorescent proteins are first visualized using epifluorescence for alignment. Finally, two-photon imaging is employed,...
13:02
Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
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Cited by 3 •
2017
We present a protocol for fabricating 1-D photonic crystal cavities on subwavelength diameter silica fibers (optical nanofibers) using femtosecond laser-induced ablation.
08:44
Fabrication and Testing of Photonic Thermometers
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Cited by 1 •
2018
We describe the process of fabrication and testing of photonic thermometers.
10:08
Intravital Imaging of the Mouse Thymus using 2-Photon Microscopy
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Cited by 13 •
2012
We have developed novel laboratory tools and protocols for intravital imaging acquisition of the thymus. Our technique should help in the identification of “niches” within the thymus where T cell development occurs.
FAQs
Photon energy must match an energy difference available within the molecule for absorption to occur. Depending on that match, the molecule may reach an excited electronic, vibrational, or rotational state. This relationship connects the energy of incoming light with the molecular information observed in an experiment, helping researchers interpret absorption wavelengths and distinguish different aspects of molecular behavior.
Absorption wavelengths indicate which light energies a substance can take up and therefore provide clues about its molecular structure and available energy states. Measuring these wavelengths supports chemical identification and comparison of substances. The resulting spectral information can also help researchers select suitable light conditions for investigating molecular dynamics or initiating a light-driven reaction.
Absorption creates an excited species that can follow several pathways rather than producing one universal outcome. It may emit light, transfer energy to another entity, or undergo a photochemical reaction. The relative pathway determines whether an experiment emphasizes fluorescence, energy movement, or chemical transformation, making relaxation behavior central to interpreting photon interaction results.
In spectroscopy, researchers examine how molecules absorb or emit light to obtain information about identity, structure, or molecular behavior. In photochemistry, the excited state is considered for its ability to drive a chemical reaction. The same light-matter event can therefore serve either as an analytical signal or as the starting point for controlled chemical change.
A general study begins by exposing the sample to selected light and examining the resulting absorption or emission behavior. Researchers then relate observed wavelengths to molecular energy states and consider whether the excited species emitted light, transferred energy, or reacted chemically. This workflow connects measured optical behavior with molecular structure, dynamics, or reaction outcomes.
Fluorescence analysis relies on light absorption followed by emission from an excited molecular species. Researchers examine the emitted light as an analytical signal, using it to investigate substances and their molecular behavior. Because emission reflects an excited-state pathway, the method can complement absorption measurements and provide information relevant to chemical identification and sensing.
Photon interaction provides a foundation for spectroscopy, fluorescence analysis, and photochemistry while also supporting studies of molecular structure and dynamics. Its applications extend to energy-related processes, sensing, environmental work, and the development of materials. In each case, controlling or interpreting absorption wavelengths and relaxation pathways helps connect light exposure with a useful chemical measurement or outcome.