Results 11 to 20 of about 9,554 (255)

Brillouin gain microscopy

Nature Photonics, 2023
AbstractOptical imaging techniques with mechanical contrast, including passive microrheology, optical coherence elastography and Brillouin microscopy, are critical for material and biological discovery owing to their less perturbative nature compared with traditional mechanical imaging methods.
Roni Shaashoua, Barak Rotblat, Anat Ben-Zvi   +2 more
exaly   +5 more sources

Effects of Corneal Hydration on Brillouin Microscopy In Vivo. [PDF]

Invest Ophthalmol Vis Sci, 2018
To investigate how corneal hydration affects the Brillouin frequency of corneal stroma.From a simple analytical model considering the volume fraction of water in corneal stroma, we derived the dependence of Brillouin frequency on hydration and hydration-induced corneal thickness variation. The Brillouin frequencies of fresh ex vivo porcine corneas were
Shao P, Seiler TG, Eltony AM, Ramier A, Kwok SJJ, Scarcelli G, Ii RP, Yun SH.   +7 more
europepmc   +8 more sources

Characterization of retinal biomechanical properties using Brillouin microscopy. [PDF]

J Biomed Opt, 2020
The retina is critical for vision, and several diseases may alter its biomechanical properties. However, assessing the biomechanical properties of the retina nondestructively is a challenge due to its fragile nature and location within the eye globe.
Ambekar YS, Singh M, Scarcelli G, Rueda EM, Hall BM, Poché RA, Larin KV.   +6 more
europepmc   +7 more sources

Improvement of gain and spatial resolution for impulsive stimulated Brillouin scattering microscopy

Photoacoustics
Brillouin microscopy has been widely used in the mechanical imaging of cells and tissues, and the signal-to-noise (SNR) ratio limits the spectral integration time.
Taoran Le, Jiarui Li, Haoyun Wei, Yan Li
doaj   +4 more sources

Frequency comb enhanced Brillouin microscopy [PDF]

Optics Express, 2020
Brillouin light scattering (BLS) microscopy is a well established and powerful technique to study acoustic and magnetic excitations in the frequency domain with sub-micron spatial resolution. Many other spectroscopic techniques have benefited from the introduction of femtosecond laser sources to optically pump and stimulate the sample under ...
Aleman, Ademir, Muralidhar, Shreyas, Awad, Ahmad A., Åkerman, Johan, Hanstorp, Dag   +4 more
core   +4 more sources

In vivo measurement of the biomechanical properties of human skin with motion-corrected Brillouin microscopy [PDF]

Biomedical Optics Express
Biomechanical testing of human skin in vivo is important to study the aging process and pathological conditions such as skin cancer. Brillouin microscopy allows the all-optical, non-contact visualization of the mechanical properties of cells and tissues ...
Maria N Romodina, Kanwarpal Singh
exaly   +4 more sources

Stabilized real-time Brillouin microscopy reveals fractal organization of protein condensates in living cells [PDF]

Nature Communications
Mechanical alterations of protein condensates are increasingly recognized in the etiology of several neurodegenerative diseases, yet their characterization remains technically challenging.
Claudia Testi, Emanuele Pontecorvo, Chiara Bartoli, Chiara Marzaro, Fabrizio Gala, Li Zhang, Giulia Zanini, Noemi D’Abbondanza, Maria Giovanna Garone, Valeria de Turris, Andrea Giuliani, Gaia Di Timoteo, Irene Bozzoni, Alessandro Rosa, Giancarlo Ruocco   +14 more
doaj   +2 more sources

A 3D Brillouin microscopy dataset of the in-vivo zebrafish eye [PDF]

Data in Brief, 2020
In this work we present three-dimensional (3D) measurements of Brillouin scattering spectra of the in-vivo zebrafish larvae eye. This dataset was obtained by Brillouin microscopy, an emerging all-optical and non-contact technique that gives access to ...
Héctor Sánchez-Iranzo, Carlo Bevilacqua, Alba Diz-Muñoz, Robert Prevedel   +3 more
doaj   +2 more sources

Brillouin microscopy, what is it really measuring? [PDF]

, 2017
Brillouin microscopy measures compressibility, but is being increasingly used to assess stiffness of cells and tissues. Using hydrogels with tunable properties, we demonstrate that Brillouin microscopy is insensitive to stiffness of hydrated materials, but depends strongly on water content, consistent with a theoretical model of biphasic ...
Wu, P-J, Kabakova, I, Ruberti, J, Sherwood, JM, Dunlop, IE, Paterson, C, Török, P, Overby, DR   +7 more
core   +5 more sources

In vivo Brillouin optical microscopy of the human eye

Optics Express, 2012
We report the first Brillouin measurement of the human eye in vivo. We constructed a Brillouin optical scanner safe for human use by employing continuous-wave laser light at 780 nm at a low power of 0.7 mW. With a single scan along the optic axis of the eye, the axial profile of Brillouin frequency shift was obtained with a pixel acquisition time of 0 ...
Giuliano Scarcelli, Seok Hyun Yun
exaly   +5 more sources