Results 21 to 30 of about 1,200,093 (137)

Microfluidics on lensless, semiconductor optical image sensors: challenges and opportunities for democratization of biosensing at the micro‐and nano‐scale

open access: yesNanophotonics, Volume 12, Issue 21, Page 3977-4008, October 2023., 2023
Abstract Optical image sensors are 2D arrays of pixels that integrate semiconductor photodiodes and field effect transistors for efficient photon conversion and processing of generated electrons. With technological advancements and subsequent democratization of these sensors, opportunities for integration with microfluidics devices are currently ...
Xinyue Hu   +2 more
wiley   +1 more source

Nanophotonic Materials for Twisted‐Light Manipulation

open access: yesAdvanced Materials, Volume 35, Issue 34, August 24, 2023., 2023
Twisted light, an unbounded set of helical spatial modes of electromagnetic light fields, offers both fundamental new insights into structured light–matter interactions and a new degree of freedom to boost optical and quantum information capacity. Recently, the nanophotonics field has transformed the photonic design and unveiled a diverse range of ...
Haoran Ren, Stefan A. Maier
wiley   +1 more source

Moment‐Based Shape‐Learning Holography for Fast Classification of Microparticles

open access: yesAdvanced Photonics Research, Volume 4, Issue 8, August 2023., 2023
The proposed method called moment‐based shape‐learning holography (MSLH) aims to fast classify microparticles. It is achieved by decomposing and recombining Zernike moments to generate a large amount of virtual feature‐shapes, allowing for efficient acquisition of training data for the network.
Haixin Luo   +5 more
wiley   +1 more source

Nonmechanical parfocal and autofocus features based on wave propagation distribution in lensfree holographic microscopy

open access: yesScientific Reports, 2021
Performing long-term cell observations is a non-trivial task for conventional optical microscopy, since it is usually not compatible with environments of an incubator and its temperature and humidity requirements.
Agus Budi Dharmawan   +10 more
doaj   +1 more source

Lensless holographic trichoscopy and trichometry [for medical specialists]

open access: yes, 2022
A new principle of differential trichomorphological analysis and on-chip diagnostics is proposed. This principle can be considered as a transition from a trichoscope to a metrologically effective trichometer based on holographic laser, in particular ...
Oleg Gradov
core   +1 more source

Smart computational light microscopes (SCLMs) of smart computational imaging laboratory (SCILab)

open access: yesPhotoniX, 2021
Computational microscopy, as a subfield of computational imaging, combines optical manipulation and image algorithmic reconstruction to recover multi-dimensional microscopic images or information of micro-objects. In recent years, the revolution in light-
Yao Fan   +11 more
doaj   +1 more source

Diffractive digital lensless holographic microscopy with fine spectral tuning [PDF]

open access: yes, 2013
We experimentally demonstrate an all-diffractive optical setup for digital lensless holographic microscopy with easy wavelength line selection and micrometric resolution.
Lancis, Jesús   +3 more
core   +1 more source

Artificial Neural Networks for Automated Cell Quantification in Lensless LED Imaging Systems

open access: yesProceedings, 2018
Cell registration by artificial neural networks (ANNs) in combination with principal component analysis (PCA) has been demonstrated for cell images acquired by light emitting diode (LED)-based compact holographic microscopy.
Agus Budi Dharmawan   +10 more
doaj   +1 more source

Femtosecond digital lensless holographic microscopy to image biological samples [PDF]

open access: yes, 2013
The use of femtosecond laser radiation in digital lensless holographic microscopy (DLHM) to image biological samples is presented. A mode-locked Ti:Sa laser that emits ultrashort pulses of 12 fs intensity FWHM, with 800 nm mean wavelength, at 75 MHz ...
Lancis, Jesús   +5 more
core   +1 more source

DWT-SVD Based Watermarking for High-Resolution Medical Holographic Images

open access: yesComplexity, 2022
Watermarking is one of the most common techniques used to protect data’s authenticity, integrity, and security. The obfuscation in the frequency domain used in the watermarking method makes the watermarking stronger than the obfuscation in the spatial ...
Fahrettin Horasan   +5 more
doaj   +1 more source

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