Article
Optics
Louisiane Devaud, Bernhard Rauer, Matthias Kuhmayer, Jakob Melchard, Mickael Mounaix, Stefan Rotter, Sylvain Gigan
Summary: The complex temporal behavior of an ultrashort pulse of light propagating through a multiple scattering medium can be experimentally characterized using a time-gated transmission matrix. We demonstrate that injecting singular vectors of this matrix allows optimal control of energy deposition at any controllable delay time. Our approach provides insights into fundamental aspects of multispectral light scattering and could be applied to imaging or coherent control.
Article
Physics, Fluids & Plasmas
Marcel Novaes
Summary: This paper investigates the properties of the M-dimensional scattering matrix and energy correlators in chaotic systems. By analyzing the correlators constructed from traces of powers of the matrix and the statistical properties of the time delay operator, two kinds of expressions for the energy correlators are derived. An explicit formula for Tr(Q(m)) is extracted, which is valid for all m and agrees with predictions from random matrix theory.
Article
Astronomy & Astrophysics
Chentao Tan, Zhun Lu
Summary: This study provides new information about the spin structure of the pion by investigating the correlation between quark spin and orbital angular momentum. The results show that the correlation in the pion is antialigned. Additionally, the correlation in terms of x and transverse momentum kT is compared between the GPD approach and the GTMD approach.
Article
Chemistry, Physical
Nele N. Striker, Irina Lokteva, Michael Dartsch, Francesco Dallari, Claudia Goy, Fabian Westermeier, Verena Markmann, Svenja C. Hovelmann, Gerhard Grubel, Felix Lehmkuhler
Summary: The dynamics and time scales of higher-order correlations in supercooled colloidal systems were studied using X-ray photon correlation spectroscopy (XPCS) and X-ray cross-correlation analysis (XCCA). The results showed the typical slowing of the dynamics of a hard sphere system when approaching the glass transition. The time scales of higher-order correlations were probed using a novel time correlation function g(C), revealing that the local orders within the sample become more long-lived for larger volume fractions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Editorial Material
Optics
Zhipeng Yu, Huanhao Li, Tianting Zhong, Puxiang Lai
Summary: The time-gated reflection matrix has been successfully utilized for optical imaging deep within scattering media and extended for enhanced light focusing in such media, potentially inspiring a wide range of optical applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Editorial Material
Biochemical Research Methods
Rita Strack
Summary: Researchers have discovered two naturally occurring channelrhodopsins that can be used in optogenetic applications for potassium ion transport.
Article
Optics
Yuhu Ren, Jimo Jian, Delai Kong, Jing Wang, Wenjiang Tan, Wei Xia
Summary: In this study, time-resolved imaging of an object in a turbid medium was demonstrated using ultrafast optical Kerr gate (OKG) of liquid carbon disulfide (CS2), improving the visibility and contrast of the image. The delay time between the imaging pulse and gating pulse plays a key role in the efficiency of ultrafast OKG imaging of CS2 through a turbid medium, with a relatively wide delay time range for obtaining high contrast images.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Computer Science, Software Engineering
Lifan Wu, Guangyan Cai, Ravi Ramamoorthi, Shuang Zhao
Summary: This paper introduces a new theory of differentiable time-gated rendering that allows differentiation with respect to arbitrary scene parameters and the design of advanced Monte Carlo estimators. The authors validate their theory by comparing derivatives generated with their technique and finite differences, and demonstrate the usefulness of the technique through a few proof-of-concept inverse-rendering examples simulating various time-of-flight imaging scenarios.
ACM TRANSACTIONS ON GRAPHICS
(2021)
Article
Chemistry, Multidisciplinary
Alex McGlasson, Laura C. Bradley
Summary: DLS method allows characterization of the 3D active motion of JM and quantification of time-dependent behavior for a broader range of JM sizes. The translational and rotational diffusion of JM is decoupled by studying the functions of fuel concentration, JM concentration, and time after fuel addition.
Article
Optics
Maryam Baker, Euan McLeod
Summary: Fluorescence and photoluminescence can be used for high contrast imaging through the use of specific probes, but bulky microscopes require mechanical scanning and stitching for high space-bandwidth product images. Lensfree imaging can achieve a high space-bandwidth product through computational reconstruction from diffraction patterns. In this study, a time-gated lensfree photoluminescent imaging system with high resolution was developed using europium chelate fluorophores and temporal filtering.
Article
Optics
L. Di Sieno, E. Ferocino, E. Conca, V Sesta, M. Buttafava, F. Villa, F. Zappa, D. Contini, A. Torricelli, P. Taroni, A. Tosi, A. Pifferi, A. Dalla Mora
Summary: This study demonstrates the performance of a fast-gated digital silicon photomultiplier (SiPM) with an overall active area of 8.6 mm(2), which overcomes the photon collection limitations of established time-gated single-pixel detectors by orders of magnitude, enabling deep investigations within scattering media and high signal-to-noise ratios at late photon arrival times.
Article
Physics, Applied
Christopher Corden, Radu Boitor, Ioan Notingher
Summary: The use of time-gated Raman spectroscopy based on a single photon avalanche diode was investigated for acquiring Raman spectra of biological tissue under ambient lighting conditions. Optimal suppression of background light was observed for time gate widths of 300-1000 ps. The technique was able to detect subtle spectral differences required for medical diagnostics, such as differences in Raman spectra of cancer and normal tissue.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Sabrina Bialas, Tim Krappitz, Sarah L. Walden, Kubra Kalayci, Daniel Kodura, Hendrik Frisch, Jennifer M. MacLeod, Andrew Nelson, Lukas Michalek, Christopher Barner-Kowollik
Summary: This study presents a strategy to control conformational changes in grafted polymer brushes through photoinduced crosslinking of photoreactive groups embedded in the lateral architecture. The polymer brushes containing UV-light photoreactive o-methyl benzaldehyde moieties were synthesized using surface-initiated reversible deactivation polymerization and the conformational changes were analyzed comprehensively using various surface sensitive characterization methods. By incorporating a visible light active moiety into the polymer brush architecture, wavelength-selective crosslinking behavior was observed, allowing for specific sections of the lateral brush architecture to be crosslinked based on irradiation wavelength.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Luong Viet Mui, Tran Ngoc Hung, Keito Shinohara, Kohei Yamanoi, Toshihiko Shimizu, Nobuhiko Sarukura, Hikari Shimadera, Akira Kondo, Yoshinori Sumimura, Bui Van Hai, Diep Van Nguyen, Pham Hong Minh, Dinh Van Trung, Marilou Cadatal-Raduban
Summary: Numerical simulations were used to investigate the angular dependence of MIe scattering cross-section intensities for various types of scatterers. The scattering intensity showed distinct features depending on the scattering parameters, allowing for the identification of atmospheric pollutants. A time-gated lidar scheme, called MISTS-LIDAR, was proposed to accurately identify and locate atmospheric pollutants with high spatial resolution.
APPLIED SCIENCES-BASEL
(2023)
Article
Multidisciplinary Sciences
Zongyao Zhou, I-Chun Chen, Lubna M. Rehman, Ammar M. Aboalsaud, Digambar B. Shinde, Li Cao, Yuting Zhang, Zhiping Lai
Summary: Inspired by natural light-gated ion channels, an artificial light-gated ion channel membrane was developed using conjugated microporous polymers. Through precise control of pore size and thickness on a molecular level, the membrane exhibited uniform pore size and highly sensitive light-switchable response for reversible ion transport.
Article
Biochemical Research Methods
Lisanne Schulze, Joerg Henninger, Mykola Kadobianskyi, Thomas Chaigne, Ana Isabel Faustino, Nahid Hakiy, Shahad Albadri, Markus Schuelke, Leonard Maler, Filippo Del Bene, Benjamin Judkewitz
Article
Optics
Maximilian Hoffmann, Benjamin Judkewitz
Article
Multidisciplinary Sciences
Mykola Kadobianskyi, Lisanne Schulze, Markus Schuelke, Benjamin Judkewitz
Article
Biochemical Research Methods
Alex Muthumbi, Amey Chaware, Kanghyun Kim, Kevin C. Zhou, Pavan Chandra Konda, Richard Chen, Benjamin Judkewitz, Andreas Erdmann, Barbara Kappes, Roarke Horstmeyer
BIOMEDICAL OPTICS EXPRESS
(2019)
Article
Optics
Ioannis N. Papadopoulos, Jean-Sebastien Jouhanneau, Naoya Takahashi, David Kaplan, Matthew Larkum, James Poulet, Benjamin Judkewitz
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Optics
Caroline Berlage, Malinda L. S. Tantirigama, Mathias Babot, Diego Di Battista, Clarissa Whitmire, Ioannis N. Papadopoulos, James F. A. Poulet, Matthew Larkum, Benjamin Judkewitz
Summary: The scattering compensation technique based on three-photon excitation introduced in this paper converges faster and works reliably even on densely labeled samples compared to two-photon techniques, showing great potential for biomedical imaging applications.
Article
Cell Biology
Gokul Rajan, Julie Lafaye, Giulia Faini, Martin Carbo-Tano, Karine Duroure, Dimitrii Tanese, Thomas Panier, Raphael Candelier, Jorg Henninger, Ralf Britz, Benjamin Judkewitz, Christoph Gebhardt, Valentina Emiliani, Georges Debregeas, Claire Wyart, Filippo Del Bene
Summary: This study investigates the evolutionary divergence of locomotion and its adaptation to environmental constraints by comparing swimming patterns in closely related species with similar neuronal circuitry. The findings reveal that mesencephalic locomotion maintenance neurons and the availability of dissolved oxygen and timing of swim bladder inflation may drive the differences in swimming pattern.
Article
Optics
Sylvain Gigan, Ori Katz, Hilton B. de Aguiar, Esben Ravn Andresen, Alexandre Aubry, Jacopo Bertolotti, Emmanuel Bossy, Dorian Bouchet, Joshua Brake, Sophie Brasselet, Yaron Bromberg, Hui Cao, Thomas Chaigne, Zhongtao Cheng, Wonshik Choi, Tomas Cizmar, Meng Cui, Vincent R. Curtis, Hugo Defienne, Matthias Hofer, Ryoichi Horisaki, Roarke Horstmeyer, Na Ji, Aaron K. LaViolette, Jerome Mertz, Christophe Moser, Allard P. Mosk, Nicolas C. Pegard, Rafael Piestun, Sebastien Popoff, David B. Phillips, Demetri Psaltis, Babak Rahmani, Herve Rigneault, Stefan Rotter, Lei Tian, Ivo M. Vellekoop, Laura Waller, Lihong Wang, Timothy Weber, Sheng Xiao, Chris Xu, Alexey Yamilov, Changhuei Yang, Hasan Yilmaz
Summary: In the last decade, various tools such as wavefront shaping and computational methods have been developed to understand and control the propagation of light in complex mediums. This field has revolutionized the possibility of diffraction-limited imaging at depth in tissues, and a vibrant community is actively working on it.
JOURNAL OF PHYSICS-PHOTONICS
(2022)
Review
Biochemical Research Methods
Qinrong Zhang, Qi Hu, Caroline Berlage, Peter Kner, Benjamin Judkewitz, Martin Booth, Na Ji
Summary: Optical microscopy is widely used, but its performance for bioimaging is often affected by sample-induced aberrations. Recently, adaptive optics (AO) techniques have been applied to microscopy, allowing high-resolution imaging of biological structures in complex tissues. This review discusses classic and recently developed AO techniques and their applications in optical microscopy.
BIOMEDICAL OPTICS EXPRESS
(2023)
