Results 51 to 60 of about 1,200,093 (137)

Bendable Fiber Lens for Minimally Invasive Endoscopy

Laser &Photonics Reviews, Volume 19, Issue 12, June 18, 2025.
Translating ex vivo imaging to minimally invasive in vivo applications is of outstanding scientific and socioeconomic relevance. 3D imaging based on tiny lensless fiber endoscopes requires complex setups and computational schemes, so far. Bridging this gap, imaging through a unique optical fiber that mimics the functionality of a lens but is minimally ...
Ronja Stephan, Elias Scharf, Kinga Zolnacz, Waclaw Urbanczyk, Katharina Hausmann, Matthias Ließmann, Johannes Gürtler, Tom Glosemeyer, Jürgen Czarske, Michael Steinke, Robert Kuschmierz   +10 more
wiley   +1 more source

Label‐Free Quantitative Phase Imaging of Mouse Ovarian Tissue Sections Using Dual Spherical Wave Off‐Axis Digital Holographic Microscopy

International Journal of Optics, Volume 2025, Issue 1, 2025.
In this paper, we have presented the design and implementation of an off‐axis digital holographic microscopy (DHM) system based on dual spherical wave interference for quantitative phase imaging of unstained mouse ovarian tissue sections. Theoretical analysis reveals that the secondary phase distortion inherent in spherical waves becomes negligible ...
Yiwei Liu, Shichao Jin, Leyi Yu, Xinyang Di, Xiaonan Liang, Chunyan Zhou, Na Shen, Yuanze Ma, Haochong Huang   +8 more
wiley   +1 more source

Continuous Live-Cell Culture Imaging and Single-Cell Tracking by Computational Lensfree LED Microscopy

Sensors, 2019
Continuous cell culture monitoring as a way of investigating growth, proliferation, and kinetics of biological experiments is in high demand. However, commercially available solutions are typically expensive and large in size.
Gregor Scholz, Shinta Mariana, Agus Budi Dharmawan, Iqbal Syamsu, Philipp Hörmann, Carsten Reuse, Jana Hartmann, Karsten Hiller, Joan Daniel Prades, Hutomo Suryo Wasisto, Andreas Waag   +10 more
doaj   +1 more source

Imaging‐Based Lensless Polarization‐Sensitive Fluid Stream Analyzer for Automated, Label‐Free, and Cost‐Effective Microplastic Classification

Advanced Intelligent Systems, Volume 6, Issue 12, December 2024.
The presence of microplastics in the environment is of concern, yet the exact extent of this pollution remains largely unknown. The ocean is of interest as microplastic monitoring presents a challenge as affordable in situ fluid stream solutions are not readily available.
Fraser Montandon, Fred Nicolls
wiley   +1 more source

Advanced Optical Imaging Technologies for Microplastics Identification: Progress and Challenges

Advanced Photonics Research, Volume 5, Issue 11, November 2024.
Global concerns about microplastics (MP) and nanoplastics are rising, necessitating effective identification methods. This review explores advanced optical imaging systems for MP detection, highlighting. their nondestructive, noncontact advantages and rapid detection capabilities.
Yanmin Zhu, Yuxing Li, Jianqing Huang, Yunping Zhang, Yuen‐Wa Ho, James Kar‐Hei Fang, Edmund Y. Lam   +6 more
wiley   +1 more source

High Space‐Bandwidth‐Product (SBP) Hologram Carriers Toward Photorealistic 3D Holography

Laser &Photonics Reviews, Volume 18, Issue 7, July 2024.
In a classic hologram device, the hologram carrier directly determines the display capability and the design of the high space‐bandwidth‐product (SBP) of optical systems. Here, a fundamental progress report of the main hologram carriers (SLM and metasurface), which are widely utilized in holographic displays and holography systems to achieve high SBP ...
Jin Li, Xiaoxun Li, Xiangyu Huang, Robin Kaissner, Frank Neubrech, Shuo Sun, Na Liu   +6 more
wiley   +1 more source

High numerical aperture freeform-based illumination for compact lensless holographic microscopy

JPhys Photonics
Digital lensless holographic microscopy (DLHM) is a simple and cost-effective technique for retrieving label-free microscopic information from transparent samples.
Maria J Lopera, Dries Rosseel, Yunfeng Nie, Carlos Trujillo, Hugo Thienpont, Heidi Ottevaere   +5 more
doaj   +1 more source

Prototype of a Digital Holographic Microscope for Studying Marine Plankton

Приборы и методы измерений
Marine plankton is a key component of aquatic ecosystems. Development of modern and accessible tools for studying planktonic organisms is a relevant and important task.
A. P. Khurchak, A. I. Khurchak
doaj   +1 more source

Light Engineering and Silicon Diffractive Optics Assisted Nonparaxial Terahertz Imaging

Laser &Photonics Reviews, Volume 18, Issue 5, May 2024.
Comprehensive study on terahertz (THz) light engineering in nonparaxial lensless imaging systems based on silicon diffractive optics is presented. A rational framework for their design and optimal assembly using a Fresnel zone plate, Fibonacci lens, Bessel axicon, and Airy zone plate is established.
Sergej Orlov, Rusnė Ivaškevičiūtė‐Povilauskienė, Karolis Mundrys, Paulius Kizevičius, Ernestas Nacius, Domas Jokubauskis, Kęstutis Ikamas, Alvydas Lisauskas, Linas Minkevičius, Gintaras Valušis   +9 more
wiley   +1 more source

Snapshot spectral imaging: from spatial‐spectral mapping to metasurface‐based imaging

Nanophotonics, Volume 13, Issue 8, Page 1303-1330, April 2024.
Abstract Snapshot spectral imaging technology enables the capture of complete spectral information of objects in an extremely short period of time, offering wide‐ranging applications in fields requiring dynamic observations such as environmental monitoring, medical diagnostics, and industrial inspection.
Kaiyang Ding, Ming Wang, Mengyuan Chen, Xiaohao Wang, Kai Ni, Qian Zhou, Benfeng Bai   +6 more
wiley   +1 more source