Holographic pixel super-resolution in portable lensless on-chip microscopy using a fiber-optic array.

Holographic pixel super-resolution in portable lensless on-chip microscopy using a fiber-optic array.
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DOI:
10.1039/c0lc00684j
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发表时间:
2011-04-07
期刊:
影响因子:
6.1
通讯作者:
Ozcan A
Ozcan A
中科院分区:
工程技术1区
文献类型:
--
作者:
Bishara W;Sikora U;Mudanyali O;Su TW;Yaglidere O;Luckhart S;Ozcan A

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We report a portable lensless on-chip microscope that can achieve <1 μm resolution over a wide field-of-view of ~24 mm2 without the use of any mechanical scanning. This compact on-chip microscope weighs ~95 g and is based on partially coherent digital in-line holography. Multiple fiber-optic waveguides are butt-coupled to light emitting diodes, which are controlled by a low-cost micro-controller to sequentially illuminate the sample. The resulting lensfree holograms are then captured by a digital sensor-array and are rapidly processed using a pixel super-resolution algorithm to generate much higher resolution holographic images (both phase and amplitude) of the objects. This wide-field and high-resolution on-chip microscope, being compact and light-weight, would be important for global health problems such as diagnosis of infectious diseases in remote locations. Toward this end, we validate the performance of this field-portable microscope by imaging human malaria parasites (Plasmodium falciparum) in thin blood smears. Our results constitute the first-time that a lensfree on-chip microscope has successfully imaged malaria parasites.
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