Navigation Links
Harvard University engineers demonstrate quantum cascade laser nanoantenna
Date:10/22/2007

Cambridge, Mass. October 22, 2007 In a major feat of nanotechnology engineering researchers from Harvard University have demonstrated a laser with a wide-range of potential applications in chemistry, biology and medicine. Called a quantum cascade (QC) laser nanoantenna, the device is capable of resolving the chemical composition of samples, such as the interior of a cell, with unprecedented detail.

Spearheaded by graduate students Nanfang Yu, Ertugrul Cubukcu, and Federico Capasso, Robert L. Wallace Professor of Applied Physics, all of Harvards School of Engineering and Applied Sciences, the findings will be published as a cover feature of the October 22 issue of Applied Physics Letters. The researchers have also filed for U.S. patents covering this new class of photonic devices.

The lasers design consists of two gold rods separated by a nanometer gap (a device known as an optical antenna) built on the facet of a quantum cascade laser, which emits invisible light in the region of the spectrum where most molecules have their tell tale absorption fingerprints. The nanoantenna creates a light spot of nanometric size about fifty to hundred times smaller than the laser wavelength; the spot can be scanned across a specimen to provide chemical images of the surface with superior spatial resolution.

Theres currently a major push to develop powerful tabletop microscopes with spatial resolution much smaller than the wavelength that can provide images of materials, and in particular biological specimens, with chemical information on a nanometric scale, says Federico Capasso.

While infrared microscopes, based on the detection of molecular absorption fingerprints, are commercially available and widely used to map the chemical composition of materials, their spatial resolution is limited by the range of available light sources and optics to well above the wavelength. Likewise the so-called near field infrared microscopes, which rel
'/>"/>

Contact: Michael Patrick Rutter
mrutter@seas.harvard.edu
617-496-3815
Harvard University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Harvard advance improves stem cell research; not a medical revolution
2. GE Healthcare, Harvard medical school to collaborate on nervous system research
3. Fermentation Cell Culture: University Style
4. Fueling our economy with the University of Wisconsin
5. CIO Leadership Series: Ed Meachen, University of Wisconsin System
6. University, business leaders convene in Wausau
7. University of South Florida expands GE Healthcare relationship
8. State and university form network for entrepreneurial outreach
9. University center offers speed boost to manufacturers
10. Building the modern public-purpose university should be UW Systems goal
11. University Research Park to add 20 incubator suites
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/23/2014)... 2014 Proove Biosciences , the ... presenting research on the association between specific genes and ... Psychiatric and Mental Health Congress’ 27th Annual Scientific ... on the theme of ‘Embracing Change.’ Mental health, and ... landscape. From the challenges presented by the Affordable Care ...
(Date:9/23/2014)... San Jose, California (PRWEB) September 23, 2014 ... – Agricultural biotechnology is gaining steady popularity the ... sophisticated plant breeding techniques. Growth in the marketplace ... Genetically Modified (GM) crops in developing countries. Several ... 30% of under-nourished population, have already implemented genetically ...
(Date:9/23/2014)... This is a professional and ... Isopropanol (IPA) industry. The report provides a basic ... industry chain structure. Global market analysis and Chinese ... on history, developments, trends and competitive landscape of ... Chinese situation is also offered. , The report ...
(Date:9/23/2014)... Marktech Optoelectronics has introduced the MTE280xxx series, its ... 280 nm wavelength range. This series joins Marktech’s current ... to 405nm. These new devices are suitable for applications ... Mark Campito, Marktech’s CEO states that “what makes this ... that we offer it in one of the largest ...
Breaking Biology Technology:Proove Biosciences Will Be Exhibiting New Genetic Research at the 27th Annual US Psych Congress Scientific Program 2Proove Biosciences Will Be Exhibiting New Genetic Research at the 27th Annual US Psych Congress Scientific Program 3Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 2Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 3Rising Focus on Food Security Spurs Growth in the Global Agricultural Biotechnology Market, According to New Report by Global Industry Analysts, Inc. 4(IPA) Isopropanol Industry International & China Development Trend Analysis Now Available at DeepResearchReports.com 2(IPA) Isopropanol Industry International & China Development Trend Analysis Now Available at DeepResearchReports.com 3Marktech Introduces its New Line of Deep UV Emitters 2
... , , , , , ... service for large insert vectors such as BACs, cosmids and fosmids. Agencourt , ... , rapid turnaround including: , ... strategies , Patented SPRI technology , ...
... ,Solutions Note ,, The time taken to ... for,researchers today. Whilst many manufacturers of,thermal cyclers focus ... article we highlight how Thermo's approach of focussing ... less than 1 hour. , Abstract ...
... , , , , RT-PCR amplification ... are specific for that mRNA sequence. The primer design should also , ... product derived from contaminating genomic DNA. There are two approaches , ... , , , , , ...
Cached Biology Technology:FULL LENGTH INSERT SEQUENCING 2Rapid PCR* Using Active Tube Temperature Control On Thermo's PCR Machines 2Rapid PCR* Using Active Tube Temperature Control On Thermo's PCR Machines 3
(Date:9/23/2014)... fall of an athlete,s moving body relies on an orchestrated ... angles and intersecting planes literally the geometry of ... But it,s more than just a footfall error at the ... the ACL or anterior cruciate ligament tear. In fact, size ... of the knee joint and volume of the ACL ...
(Date:9/23/2014)... Researchers have encountered variants or isoforms in microRNAs ... byproducts. A recent study, published in the journal ... isomiRs have abundances that depend on geographic subpopulations and ... given miRNA may not be the one typically listed ... microRNA isoforms are much more common than we had ...
(Date:9/23/2014)... Scientists often measure the effects of temperature on insects ... and abundance, but a Dartmouth study shows for the ... addition to temperature, ultimately limits how fast they grow. ... more about the overall environmental conditions that shape the ... lead author Lauren Culler , an Arctic postdoctoral ...
Breaking Biology News(10 mins):Does size matter? MRI imaging sheds light on athletes most at risk for severe knee injury 2Does size matter? MRI imaging sheds light on athletes most at risk for severe knee injury 3Slight alterations in microRNA sequences hold more information than previously thought 2Slight alterations in microRNA sequences hold more information than previously thought 3Insects' fear limits boost from climate change, Dartmouth study shows 2
... BETHESDA, MD, USA, DECEMBER 1, 2011 The collaboration ... a more extensive and advanced facility for archiving, sharing, ... American Society for Cell Biology (ASCB) and the National ... University of California, San Diego (UCSD), have joined forces ...
... COLUMBIA, Mo. When a muscle is damaged, ... to "wake up" and contribute to repairing the muscle. ... satellite cells could help with the repair, and are ... tissue. This knowledge could ultimately help doctors more effectively ...
... A Michigan State University researcher is using a ... a portable wastewater treatment system that could improve ... is being spearheaded by Wei Liao, an MSU ... will generate energy and produce drinking water, thus ...
Cached Biology News:2 top biological imaging centers offer powerful free online tool to researchers and public 2Adult stem cells use special pathways to repair damaged muscle, MU researchers find 2Wastewater system generates energy, produces drinking water 2
Recombinant Rat Leptin, Ultra Pure...
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
Bethyl Laboratories packages antibodies, conjugates and calibrators to provide quantitative ELISA kits. Each kit contains the following components, sufficient for 1000 single well assays....
quantitation of phosphatase activity, evaluation of hits and leads from HTS...
Biology Products: