Results 121 to 130 of about 4,077 (269)

A Reversible Clearing Strategy Enables Robust Label‐Free Phase Imaging of Thick Tissues

Laser &Photonics Reviews, EarlyView.
The principle of a reversible clearing strategy via glycerol and tartrazine solution (GTS) for robust whole‐slide label‐free phase imaging of thick tissue slices via high‐throughput Fourier ptychographic microscopy (FPM) and lensless digital holographic microscopy (LDHM). ABSTRACT Thick biological specimens impose strong scattering and attenuation that
Mikołaj Krysa, Anna Chwastowicz, Małgorzata Lenarcik, Paweł Matryba, Piotr Zdańkowski, Maciej Trusiak   +5 more
wiley   +1 more source

Enhanced Dye‐Sensitized Mechanosensation Utilizing Pulsed and Digitally Modulated Light

Advanced Science
The generation of pressure perturbations in matter stimulated by pulsed light is a method widely recognized as the photoacoustic or light‐induced thermoelastic effect.
Tarek Rafeedi, Laura L. Becerra, Nicholas Root, Yi Qie, William Brown, Baiyan Qi, Lei Fu, Guillermo Esparza, Lekshmi Sasi, Kabir Kapadia, Romke Rouw, Jesse Jokerst, Darren J. Lipomi   +12 more
doaj   +1 more source

Scalable Large Field‐of‐view 3D Photoacoustic Ultrasound Imaging With Digital Multiplexing for Human Extremities

Laser &Photonics Reviews, EarlyView.
A digitally multiplexed, large‐aperture photoacoustic and ultrasound imaging architecture is presented to overcome the fundamental limited‐view artifact inherent in conventional arrays. By significantly broadening the structural detection coverage, this scalable platform enables high‐fidelity 3D visualization of human extremities within a single ...
Sinyoung Park, Minsik Sung, Hyunhee Kim, Kijong Lee, Joongho Ahn, Eun‐Yeong Park, Sungsik Park, Hyung Ham Kim, Chulhong Kim   +8 more
wiley   +1 more source

Reaction volume of water formation detected by time resolved photoacoustics: photoinduced proton transfer between o-nitrobenzaldehyde and hydroxyls in water

, 1997
The structural volume changes accompanying light-induced proton transfer reactions in aqueous solutions of o-nitrobenzaldehyde have been investigated using time-resolved photoacoustics.
VIAPPIANI, Cristiano, G. Bonetti, A. Vecli   +2 more
core   +1 more source

Spatiospectral Photoacoustic Microscopy With Gain‐Switched Ti:Sapphire Laser for High‐Accuracy Molecular Dynamics Imaging

Laser &Photonics Reviews, EarlyView.
Spatiospectral photoacoustic microscopy is enabled by stable, wavelength‐tunable dual‐pulse excitation from a gain‐switched Ti:sapphire laser. Intrinsically synchronized 532‐nm and NIR‐I pulses provide single‐scan, co‐registered mapping of oxygen saturation and indocyanine green dynamics in vivo.
Yong‐Jae Lee, Thanh Dat Le, Dong Hoon Song, Jin Hee Im, Seong‐Young Kwon, Tae Young Jeong, Jung‐Joon Min, Changho Lee, Tae Joong Eom   +8 more
wiley   +1 more source

Quantitative photoacoustics to measure single cell melanin production and nanoparticle attachment

, 2015
Photoacoustics can be used as a label-free spectroscopic method of identifying pigmented proteins and characterizing their intracellular concentration over time in a single living cell.
Eshein, Adam, Chandrasekhar, Anand, Bhattacharyya, Kiran, Viator, John A.   +3 more
core   +1 more source

Tunable, High Pulse Energy and Narrow Linewidth Gas‐Filled Fiber Laser Across Near‐ and Mid‐Infrared

Laser &Photonics Reviews, EarlyView.
A cascaded gas‐filled anti‐resonant hollow‐core fiber architecture enables broadly tunable infrared Raman lasers spanning ∼1.4–4.6 µm while maintaining microjoule‐level pulse energies and gigahertz‐level linewidths. The approach combines a wavelength‐tunable pump laser with optimized Raman frequency conversion, providing a compact route to high ...
Yazhou Wang, Marcello Meneghetti, Manoj K. Dasa, Timothy Bate, J. E. Antonio‐Lopez, Ian A. Davidson, Qiang Fu, Jaroslaw Rzegocki, Gregory T. Jasion, Francesco Poletti, Rodrigo Amezcua‐Correa, Christos Markos   +11 more
wiley   +1 more source

Triggering of Koebner Phenomenon by Picosecond Laser in a Psoriatic Patient: Clinical and Immunopathologic Insights

Lasers in Surgery and Medicine, EarlyView.
ABSTRACT Objectives To report the first case of Koebner phenomenon induced by picosecond laser treatment in a patient with psoriasis. We analyzed the clinical and histopathological features and discussed the possible mechanism by which the laser's photomechanical effect triggered the reaction.
Teppei Sakai, Koya Sonoda, Jun Omatsu
wiley   +1 more source

Migration of Erucamide in Polyethylene Film

Polymer Engineering &Science, EarlyView.
Erucamide migration in polyethylene films as a function of time and temperature, evaluated by FTIR‐PAS and correlated with changes in surface morphology and contact angle. ABSTRACT Erucamide is a migratory slip agent widely used in polyethylene (PE) films for flexible packaging applications, particularly those processed on high‐speed filling and ...
Kelly Cristina Maziero, Luís Carlos Malacarne, Monique de Souza, Raquel da Silva Palácios, Mauro Luciano Baesso, Alessandro Francisco Martins, Elisângela Corradini, Edvani Curti Muniz   +7 more
wiley   +1 more source

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

, 2016
Here, we present a protocol to estimate material and surface optical properties using the photoacoustic effect combined with total internal reflection. Optical property evaluation of thin films and the surfaces of bulk materials is an important step in ...
Hunt, Heather K, Goldschmidt, Benjamin S, Nowak, Charissa A, Rudy, Anna M, Whiteside, Paul J, Tsay, Yowting   +5 more
core   +1 more source