Navigation Links
Devising Nano Vision for an Optical Microscope

Contrary to conventional wisdom, technology’s advance into the vanishingly small realm of molecules and atoms may not be out of sight for the venerable optical microscope, after all. In fact, research at the National Institute of Standards and Technology (NIST) suggests that a hybrid version of the optical microscope might be able to image and measure features smaller than 10 nanometers—a tiny fraction of the wavelength of visible light.

In a preliminary test of the embryonic technique, NIST scientists used violet light with a wavelength of 436 nanometers to image features as small as 40 nanometers, about five times smaller than possible with a conventional optical microscope.

Roughly speaking, such a feat is akin to picking up a solitary dime with a clumsy front-end loader. If successfully developed, the imaging technology could be readily incorporated into chip-making and other commercial-scale processes for making parts and products with nanometer-scale dimensions.

The wavelengths of light in the visible part of the spectrum greatly exceed nanoscale dimensions. Consequently, the resolution of conventional light-based imaging methods is limited to about 200 nanometers—too large to resolve the details of nanotechnology, which, by definition, are no more than half that size.

However, a newly begun, five-year research effort at NIST suggests that a novel combination of illumination, detection and computing technologies can circumvent this limitation. Success would extend the technology’s 400-year-long record as an indispensable imaging and measurement tool well into the expanding realm of nanotechnology.

Called phase-sensitive, scatter-field optical imaging, the computer-intensive technique under development at NIST uses a set of dynamically engineered light waves optimized for particular properties (such as angular orientation and polarization). How this structured illumination field—engineered differently to highlight the part icular geometry of each type of specimen—scatters after striking the target can reveal the tiniest of details.

“The scattering patterns are extremely sensitive to small changes in the shape and size of the scattering feature,?explains Rick Silver, a physicist in NIST’s Precision Engineering Division.


'"/>

Source:NIST Tech Beat


Related biology news :

1. Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/28/2017)... , Spanien, 27. Februar 2017  EyeLock LLC, ... Iris-Scan, wird seine erstklassige biometrische Lösung zur ... 835 mit X16 LTE auf dem Mobile ... März) am Qualcomm-Stand in Halle 3, Stand ... beinhaltet die Sicherheitsplattform Qualcomm Haven™ – eine ...
(Date:2/22/2017)... 22, 2017 With the biometrics market ... identifies four technologies that innovative and agile startups ... share in the changing competitive landscape: multifactor authentication ...   "Companies can no longer afford ... says Dimitrios Pavlakis , Industry Analyst at ...
(Date:2/14/2017)... N.C. , Feb. 14, 2017  Wake Forest ... M.D., as its new chief executive officer (CEO). Freischlag ... CEO John D. McConnell , M.D., who last ... position at the Medical Center, after leading it since ... the full scope of Wake Forest Baptist,s academic health ...
Breaking Biology News(10 mins):
(Date:3/29/2017)... , and HILDEN, Germany , March 29, 2017 ... PRIME STANDARD: QIA) today announced the U.S. launch of its ... assay), which was cleared by the U.S. Food and Drug Administration as a ... in genomic DNA extracted from EDTA whole blood.* ... The ipsogen JAK2 assay is processed on QIAGEN,s Rotor-Gene ® ...
(Date:3/29/2017)... N.J. and PETACH TIKVAH, ...  BrainStorm Cell Therapeutics Inc. (NASDAQ: BCLI), ... technologies for neurodegenerative diseases, announced financial results ... "2016 was a highly successful ... important achievements and significant progress made on ...
(Date:3/29/2017)... , March 29, 2017  Halozyme Therapeutics, Inc. ... and drug-delivery therapies, today announced that an Oncologic ... Drug Administration voted 11 to 0 that the ... injection was favorable for patients in the proposed ... and chronic lymphocytic leukemia. The FDA action date ...
(Date:3/29/2017)... ... ... Bactana Animal Health, a company developing natural products aimed at reducing the ... gut microbiota, today announced the closing of its first round of funding. , ... Management, LLC and a number of private investors. The company will use the financing ...
Breaking Biology Technology: