High-resolution optical microscopy has traditionally relied on high-magnification and high–
numerical aperture objective lenses. In contrast, lensless microscopy can provide high …

We discuss unique features of lens-free computational imaging tools and report some of
their emerging results for wide-field on-chip microscopy, such as the achievement of a …

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 …

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 …

To achieve high-resolution and wide field-of-view, digital holographic imaging techniques
need to tackle two major challenges: phase recovery and spatial undersampling. Previously …

We report Giga-pixel lensfree holographic microscopy and tomography using color sensor-
arrays such as CMOS imagers that exhibit Bayer color filter patterns. Without physically …

Providing means for researchers and citizen scientists in the developing world to perform
advanced measurements with nanoscale precision can help to accelerate the rate of …

This review is motivated by the growing demand for low-cost, easy-to-use, compact-size yet
powerful micro-nanofabrication technology to address emerging challenges of fundamental …

Fluorescence and, more generally, photoluminescence enable high contrast imaging of
targeted regions of interest through the use of photoluminescent probes with high specificity …

In this paper, we describe a simple charge-coupled device (CCD) based lensless
fluorometer with sensitivity in the range of current ELISA plate readers. In our lensfree …