Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Bahar Khademhosseinieh"'
Autor:
Bahar Khademhosseinieh, Zhaowei Liu, Emily R. Troemel, Malina A. Bakowski, Eric Huang, Qian Ma, Haoliang Qian
Publikováno v:
Scientific Reports
Scientific reports, vol 6, iss 1
Scientific reports, vol 6, iss 1
The conventional optical microscope is an inherently two-dimensional (2D) imaging tool. The objective lens, eyepiece and image sensor are all designed to capture light emitted from a 2D ‘object plane’. Existing technologies, such as confocal or l
Publikováno v:
2013 IEEE Photonics Conference.
We demonstrate a numerical aperture improvement of ~3 fold using pixel-super-resolution in lensfree on-chip microscopy. This improvement was confirmed using both a CCD and a CMOS imager chip, empirically pointing to the same space-bandwidth improveme
Publikováno v:
Scientific Reports
Pixel-size limitation of lensfree on-chip microscopy can be circumvented by utilizing pixel-super-resolution techniques to synthesize a smaller effective pixel, improving the resolution. Here we report that by using the two-dimensional pixel-function
Autor:
Ahmet F. Coskun, Aydogan Ozcan, Ting-Wei Su, Gabriel Biener, Ikbal Sencan, Bahar Khademhosseinieh
Publikováno v:
CLEO:2011 - Laser Applications to Photonic Applications.
We demonstrate lensfree on-chip sensing within a microfluidic channel using plasmonic nanoapertures illuminated by a partially-coherent source. Our results confirm lensfree sensing of refractive index changes as small as ~0.002 using this modality.
Publikováno v:
Applied physics letters. 97(21)
We demonstrate subpixel level color imaging capability on a lensfree incoherent on-chip microscopy platform. By using a nanostructured substrate, the incoherent emission from the object plane is modulated to create a unique far-field diffraction patt
Autor:
Bahar Khademhosseinieh, Ting-Wei Su, Derek Tseng, Ikbal Sencan, Ahmet F. Coskun, Gabriel Biener, Aydogan Ozcan
Publikováno v:
Applied physics letters. 96(17)
We introduce the use of nanostructured surfaces for lensfree on-chip microscopy. In this incoherent on-chip imaging modality, the object of interest is directly positioned onto a nanostructured thin metallic film, where the emitted light from the obj
Publikováno v:
Optics express, vol 18, iss 5
Optics Express
Optics Express
We introduce the use of a birefringent crystal with lensless digital holography to create an on-chip differential interference contrast (DIC) microscope. Using an incoherent source with a large aperture, in-line holograms of micro-objects are created
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b881d085d69109885a633c3aea6f0b59
https://escholarship.org/uc/item/714175q0
https://escholarship.org/uc/item/714175q0
Autor:
Ahmet F. Coskun, Ting-Wei Su, Aydogan Ozcan, Ikbal Sencan, Bahar Khademhosseinieh, Gabriel Biener
Publikováno v:
Applied Physics Letters. 97:221107
We demonstrate lensfree on-chip sensing within a microfluidic channel using plasmonic nanoapertures that are illuminated by a partially coherent quasimonochromatic source. In this approach, lensfree diffraction patterns of metallic nanoapertures loca
Publikováno v:
Scopus-Elsevier
By modulating the diffraction pattern of a multi-color object using a nano-structured substrate, we demonstrate lensfree color imaging on a chip. This on-chip imaging modality could be important to create compact lensfree fluorescent microscopes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb4ba0f9f41e846c320bea1bb6c00223
http://www.scopus.com/inward/record.url?eid=2-s2.0-84893553297&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-84893553297&partnerID=MN8TOARS