Lensless imaging and sensing

A Ozcan, E McLeod - Annual review of biomedical engineering, 2016 - annualreviews.org
High-resolution optical microscopy has traditionally relied on high-magnification and high–
numerical aperture objective lenses. In contrast, lensless microscopy can provide high …

Lensless digital holographic microscopy and its applications in biomedicine and environmental monitoring

Y Wu, A Ozcan - Methods, 2018 - Elsevier
Optical compound microscope has been a major tool in biomedical imaging for centuries. Its
performance relies on relatively complicated, bulky and expensive lenses and alignment …

Pixel super-resolution using wavelength scanning

W Luo, Y Zhang, A Feizi, Z Göröcs… - Light: Science & …, 2016 - nature.com
Undersampling and pixelation affect a number of imaging systems, limiting the resolution of
the acquired images, which becomes particularly significant for wide-field microscopy …

Maskless imaging of dense samples using pixel super-resolution based multi-height lensfree on-chip microscopy

A Greenbaum, A Ozcan - Optics express, 2012 - opg.optica.org
Lensfree in-line holographic microscopy offers sub-micron resolution over a large field-of-
view (eg,~ 24 mm^ 2) with a cost-effective and compact design suitable for field use …

Unconventional methods of imaging: computational microscopy and compact implementations

E McLeod, A Ozcan - Reports on Progress in Physics, 2016 - iopscience.iop.org
In the past two decades or so, there has been a renaissance of optical microscopy research
and development. Much work has been done in an effort to improve the resolution and …

High-throughput lens-free blood analysis on a chip

S Seo, SO Isikman, I Sencan, O Mudanyali… - Analytical …, 2010 - ACS Publications
We present a detailed investigation of the performance of lens-free holographic microscopy
toward high-throughput on-chip blood analysis. Using a spatially incoherent source that is …

Roadmap for optofluidics

P Minzioni, R Osellame, C Sada, S Zhao… - Journal of …, 2017 - iopscience.iop.org
Optofluidics, nominally the research area where optics and fluidics merge, is a relatively new
research field and it is only in the last decade that there has been a large increase in the …

On-chip biomedical imaging

Z Göröcs, A Ozcan - IEEE reviews in biomedical engineering, 2012 - ieeexplore.ieee.org
Lab-on-a-chip systems have been rapidly emerging to pave the way toward ultra-compact,
efficient, mass producible and cost-effective biomedical research and diagnostic tools …

Smartphone based hand-held quantitative phase microscope using the transport of intensity equation method

X Meng, H Huang, K Yan, X Tian, W Yu, H Cui, Y Kong… - Lab on a Chip, 2017 - pubs.rsc.org
In order to realize high contrast imaging with portable devices for potential mobile
healthcare, we demonstrate a hand-held smartphone based quantitative phase microscope …

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

X Hu, R Abbasi, S Wachsmann-Hogiu - Nanophotonics, 2023 - degruyter.com
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 …