610 Hits in 11.3 sec

Extending Human Vision to Infrared and Ultraviolet Light: A Study Using Micro-particles and Fluorescent Molecules

Dinesh Dhankhar, Runze Li, Anushka Nagpal, Jie Chen, Thomas C. Cesario, Peter M. Rentzepis
2020 IEEE Access  
ACKNOWLEDGMENT The authors would like to thank Prof.  ...  Maria King, Department of Biological and Agricultural Engineering, Texas A&M University for providing rod & protein samples and valuable discussions, and we thank Arjun Krishnamoorthi, Electrical and Computer  ...  of high efficiency fluorescence by dye molecules, thus extend the visual perception of human and animal vision to the ultraviolet and infrared regions.  ... 
doi:10.1109/access.2020.2988398 fatcat:22o6ih43jbcwnh2fpgpcxenhbe


Frank C. Arrance
1947 Journal of The American Ceramic Society  
The ultraviolet techniques are tools which, like the petrographic microscope, the X ray, and the spectro- graph, extend the scope of human vision.  ...  The ultraviolet tech- niques can be classified with the microscope, X-ray, spectrophotometer, and spectrograph because each extends the scope of human vision.  ... 
doi:10.1111/j.1151-2916.1947.tb18892.x fatcat:ccmgqtm4fjdnfivn3dfwikrxfq

Shedding light on nanomedicine

Rong Tong, Daniel S. Kohane
2012 Wiley Interdisciplinary Reviews: Nanomedicine and Nanobiotechnology  
This review explores the advances that nanotechnology can bring to light-based therapies and diagnostics, and vice versa, including photo-triggered systems, nanoparticles containing photoactive molecules  ...  ., photothermal therapy and photodynamic therapy) and optical imaging (e.g., fluorescence imaging) for therapeutic and diagnostic purposes.  ...  Acknowledgments The work was supported by a grant from Sanofi-Aventis, and NIH (R21DC009986).  ... 
doi:10.1002/wnan.1188 pmid:22887840 pmcid:PMC3474862 fatcat:hcw6hidwrrejvfhrvshj3ubyeq

Advances in Light Microscopy for Neuroscience

Brian A. Wilt, Laurie D. Burns, Eric Tatt Wei Ho, Kunal K. Ghosh, Eran A. Mukamel, Mark J. Schnitzer
2009 Annual Review of Neuroscience  
Since the work of Golgi and Cajal, light microscopy has remained a key tool for neuroscientists to observe cellular properties.  ...  Mouse genetic approaches permit mosaic and inducible fluorescence-labeling strategies, whereas intrinsic contrast mechanisms allow in vivo imaging of animals and humans without use of exogenous markers  ...  ACKNOWLEDGMENTS This review greatly benefited from critical feedback on portions of the text and contributions of images generously provided by many neuroscientists and microscopists.  ... 
doi:10.1146/annurev.neuro.051508.135540 pmid:19555292 pmcid:PMC2820375 fatcat:iihdajrrmramtibudjt66tvroe

Frontiers of light manipulation in natural, metallic, and dielectric nanostructures

E. De Tommasi, E. Esposito, S. Romano, A. Crescitelli, V. Di Meo, V. Mocella, G. Zito, I. Rendina
2021 La Rivista del nuovo cimento della Società italiana di fisica  
possible field enhancement effects in vibrational, Raman, infrared and fluorescence spectroscopies, paving the way to the development of novel high-performance optical sensors.  ...  AbstractThe ability to control light at the nanoscale is at the basis of contemporary photonics and plasmonics.  ...  ultraviolet to far infrared.  ... 
doi:10.1007/s40766-021-00015-w fatcat:hxsxvpon5zg4bnjzpnvks6ecfe

Versatile multispectral microscope based on light emitting diodes

Mikkel Brydegaard, Aboma Merdasa, Hiran Jayaweera, Jens Ålebring, Sune Svanberg
2011 Review of Scientific Instruments  
We describe the development of a novel multispectral microscope, based on light-emitting diodes, capable of acquiring megapixel images in thirteen spectral bands from the ultraviolet to the near infrared  ...  Versatile multispectral microscope based on light emitting diodes. Total internal reflection fluorescence microscopy imaging-guided confocal single-molecule fluorescence spectroscopy Rev. Sci.  ...  Filter slots F1 and F2 can be used for various filters in polarization or fluorescence studies. can be used to measure diffuse and specular reflectance, transmission, absorption, scattering, anisotropic  ... 
doi:10.1063/1.3660810 pmid:22225198 fatcat:4ahk6kf6rrdxdb3nrq7d4cyipa

Novel interfaces for light directed neuronal stimulation: advances and challenges

Lilach Bareket-Keren, Yael Hanein
2014 International Journal of Nanomedicine  
Acknowledgement The authors are grateful for many useful discussions with Evelyne Sernagor, Uri Banin, Ori Cheshnovsky, and Shlomo Yitzchaik.  ...  We also acknowledge the support of a grant from the Israel Ministry of Science and Technology, the Israel Science Foundation, and the European Research Council funding under the European Community's Seventh  ...  Optogenetics was studied for the application of vision restoration, 43 and a recent study demonstrated the use of a holographic system for patterned light stimulation of mice retina with millisecond  ... 
doi:10.2147/ijn.s51193 pmid:24872704 pmcid:PMC4024977 fatcat:sofc6ii7bzbdrcg3ukalroxtga


1992 Biological Reviews  
Many studies used fluorescent lamps having prominent mercury excitation lines at 546 nm and at 577-579 nm in addition to several peaks in the blue region.  ...  Safelight for photomorphogenetic studies: Infrared radiation and infrared scope. Plant Science Letters 23, 263-268. INGOLD, C. T. (1969).  ... 
doi:10.1111/j.1469-185x.1992.tb01019.x pmid:1498206 fatcat:vn754obq25cpxbqrhcvaue26j4

Precise cell behaviors manipulation through light-responsive nano-regulators: recent advance and perspective

Do Cong Thang, Zhimin Wang, Xiaoling Lu, Bengang Xing
2019 Theranostics  
photocleavage or photoisomerization studies, as well as near-infrared (NIR) light-mediated deep-tissue applications for stimulating cellular signal cascades and treatment of mortal diseases.  ...  In summary, the propagation of light-controlled nanomedicine would place a bright prospect for future medicine.  ...  Short-wavelength light (e.g., ultraviolet (UV) and visible light, etc.) has been intensively used for either cleaving the photolabile groups on the therapeutic molecules or activating photosensitive agents  ... 
doi:10.7150/thno.33888 pmid:31244956 pmcid:PMC6567964 fatcat:q3sg3ra3cncjhc54rugxqvgcii

Optical imaging modalities: principles and applications in preclinical research and clinical settings

Giacomo Pirovano, Sheryl Roberts, Susanne Kossatz, Thomas Reiner
2020 Journal of Nuclear Medicine  
We aim to provide the reader with an overview of the fundamental principles on which each imaging strategy is based, to introduce established and future applications, and to provide a rationale for selecting  ...  With the ability to non-invasively image and monitor molecular processes within tumors, molecular imaging represents a fundamental tool for cancer scientists.  ...  The implementation of fluorescence imaging extends to hybrid tomographic systems such as the advanced fluorescence-mediated tomography/micro-CT, reported to provide a favorable alternative to classic PET  ... 
doi:10.2967/jnumed.119.238279 pmid:32764124 fatcat:6ad3i744k5enznkv26nd2emaji

Shedding light on neurons: optical approaches for neuromodulation

Shan Jiang, Xiang Wu, Nicholas J Rommelfanger, Zihao Ou, Guosong Hong
2022 National Science Review  
neuromodulation based on secondary effects of light, and unconventional light sources facilitated by ultrasound and magnetic fields.  ...  We conclude our review with an outlook on new methods and mechanisms to afford optical neuromodulation with minimal invasiveness and footprints.  ...  -black substance‖ in Latin) in the brain, due to a broad absorption spectrum extending from the ultraviolet (UV) to the near-infrared (NIR) region. 13 Therefore, it is necessary to consider the heterogeneity  ... 
doi:10.1093/nsr/nwac007 fatcat:zsbkuocjz5hcjmt2p7tvfmlbze

Marine artificial light at night: An empirical and technical guide

Svenja Tidau, Tim Smyth, David McKee, Jörg Wiedenmann, Cecilia D'Angelo, David Wilcockson, Amy Ellison, Andrew J. Grimmer, Stuart R. Jenkins, Stephen Widdicombe, Ana M. Queirós, Elizabeth Talbot (+2 others)
2021 Methods in Ecology and Evolution  
The guide follows a sensory ecology approach to marine light pollution and consolidates physics, ecology and biology.  ...  Second, we discuss study design and technology to best quantify ALAN exposure of and impacts on marine and coastal organisms including molecular tools and approaches to scale-up marine ALAN research. 4  ...  Light in the spectrum of around 450 nm is attenuated and suspended particles reflect wavelengths between 495-570 nm (green to human eyes) and 570-590 nm (yellow; Mobley, 1994) .  ... 
doi:10.1111/2041-210x.13653 fatcat:kyxjtmsosbhgdejuihj6nxxc2i

Light manipulation principles in biological photonic systems

Tim Starkey, Pete Vukusic
2013 Nanophotonics  
Furthermore, the study of light production and manipulation is of significant value to a variety of industrial processes and commercial products.  ...  The science of light and colour manipulation continues to generate interest across a range of disciplines, from mainstream biology, across multiple physics-based fields, to optical engineering.  ...  We also wish to thank Caroline Pouya, Helen Ghiradella, Radislav Potyrailo, Roy Sambles, Shuichi Kinoshita and Doekele Stavenga for helpful discussions.  ... 
doi:10.1515/nanoph-2013-0015 fatcat:yslxp323x5cuzfjhtgjva45yka

Light‐Powered Microrobots: Challenges and Opportunities for Hard and Soft Responsive Microswimmers

Ada‐Ioana Bunea, Daniele Martella, Sara Nocentini, Camilla Parmeggiani, Rafael Taboryski, Diederik S. Wiersma
2021 Advanced Intelligent Systems  
Birefringent vaterite particles controlled by light were used to direct axon growth in a neural cell culture.  ...  Figure 3 shows the ultraviolet (UV), visible and infrared (IR) electromagnetic radiation spectrum and highlights the relevant range for powering microrobots.  ... 
doi:10.1002/aisy.202000256 fatcat:6eckp3ynjzavnjjgyjrepbr7l4

Single-molecule techniques in biophysics: a review of the progress in methods and applications

Helen Miller, Zhaokun Zhou, Jack Shepherd, Adam J M Wollman, Mark C Leake
2017 Reports on progress in physics (Print)  
Experimentally, technological developments in the sensitivity and speed of biomolecular detectors, the stability and efficiency of light sources, probes and microfluidics, have enabled and driven the study  ...  The key utility of single-molecule biophysics lies in its ability to probe the underlying heterogeneity of free energy states across a population of molecules, which in general is too challenging for conventional  ...  Instead, they use designed dielectric nanostructures to shape light and create trapping potentials for single micro-particles.  ... 
doi:10.1088/1361-6633/aa8a02 pmid:28869217 fatcat:vxxjljriizamtnime67nypb2mi
« Previous Showing results 1 — 15 out of 610 results