Results 101 to 110 of about 20,254,963 (292)

Two-photon microscopy using hollow Gaussian beam

, 2020
We demonstrate two-photon microscopy based on hollow Gaussian beam illumination by leveraging an axially elongated central lobe, along with reduced central lobe width for increased mode order of the focused hollow Gaussian ...
He, H, Wong, KKY, Ren, Y, Tsia, KKM, Alam, SU, Soni, NK   +5 more
core   +1 more source

A large field-of-view, single-cell-resolution two- and three-photon microscope for deep and wide imaging

eLight
In vivo imaging of large-scale neuronal activity plays a pivotal role in unraveling the function of the brain's circuitry. Multiphoton microscopy, a powerful tool for deep-tissue imaging, has received sustained interest in advancing its speed, field of ...
Aaron T. Mok, Tianyu Wang, Shitong Zhao, Kristine E. Kolkman, Danni Wu, Dimitre G. Ouzounov, Changwoo Seo, Chunyan Wu, Joseph R. Fetcho, Chris Xu   +9 more
doaj   +1 more source

Optical alignment device for two-photon microscopy

Biomedical Optics Express, 2018
Abstract Two-photon excitation fluorescence microscopy has revolutionized our understanding of brain structure and function through the high resolution and large penetration depth it offers. Investigating neural structures in vivo requires gaining optical access to the brain, which ...
Gregorio L. Galiñanes, Paul J. Marchand, Raphaël Turcotte, Sebastien Pellat, Na Ji, Daniel Huber   +5 more
openaire   +4 more sources

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Two-photon microscopy with diffractive optical elements and spatial light modulators

Frontiers in Neuroscience, 2010
Two-photon microscopy is often performed at slow frame rates, due to the need to serially scan all points in a field of view with a single laser beam. To overcome this problem, we have developed two optical methods that split and multiplex a laser beam ...
Brendon O Watson, Volodymyr Nikolenko, Roberto Araya, Darcy S Peterka, Alan Woodruff, Rafael Yuste   +5 more
doaj   +1 more source

Functional characteristics of Th1, Th17, and ex-Th17 cells in EAE revealed by intravital two-photon microscopy

Journal of Neuroinflammation, 2020
Background T helper (Th) 17 cells are a highly plastic subset of T cells, which in the context of neuroinflammation, are able to acquire pathogenic features originally attributed to Th1 cells (resulting in so called ex-Th17 cells).
Julia Loos, Samantha Schmaul, Theresa Marie Noll, Magdalena Paterka, Miriam Schillner, Julian T. Löffel, Frauke Zipp, Stefan Bittner   +7 more
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

Multicolor two-photon light-sheet microscopy

, 2014
International audienceTwo-photon microscopy is the most effective approach for deep-tissue fluorescence cellular imaging; however, its application to high-throughput or high-content imaging is often hampered by low pixel rates, challenging multicolor ...
Mahou, Pierre, Pierre Mahou, Julien Vermot, Supatto, Willy, Vermot, Julien, Beaurepaire, Emmanuel, Willy Supatto, Emmanuel Beaurepaire   +7 more
core   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source