Navigation Links
Flat lens offers a perfect image
Date:8/24/2012

Cambridge, Mass. August 23, 2012 Applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have created an ultrathin, flat lens that focuses light without imparting the distortions of conventional lenses.

At a mere 60 nanometers thick, the flat lens is essentially two-dimensional, yet its focusing power approaches the ultimate physical limit set by the laws of diffraction.

Operating at telecom wavelengths (i.e., the range commonly used in fiber-optic communications), the new device is completely scalable, from near-infrared to terahertz wavelengths, and simple to manufacture. The results have been published online in the journal Nano Letters.

"Our flat lens opens up a new type of technology," says principal investigator Federico Capasso, Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at SEAS. "We're presenting a new way of making lenses. Instead of creating phase delays as light propagates through the thickness of the material, you can create an instantaneous phase shift right at the surface of the lens. It's extremely exciting."

Capasso and his collaborators at SEAS create the flat lens by plating a very thin wafer of silicon with an nanometer-thin layer of gold. Next, they strip away parts of the gold layer to leave behind an array of V-shaped structures, evenly spaced in rows across the surface. When Capasso's group shines a laser onto the flat lens, these structures act as nanoantennas that capture the incoming light and hold onto it briefly before releasing it again. Those delays, which are precisely tuned across the surface of the lens, change the direction of the light in the same way that a thick glass lens would, with an important distinction.

The flat lens eliminates optical aberrations such as the "fish-eye" effect that results from conventional wide-angle lenses. Astigmatism and coma aberrations also do
'/>"/>

Contact: Caroline Perry
cperry@seas.harvard.edu
617-496-1351
Harvard University
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Fortis Offers Bachelor of Science in Nursing Degree Program to Florida Students
2. Gundersen Lutheran Offers Heart Surgery with Less Pain, Faster Recovery
3. UH Case Medical Center Offers New Therapy for Gynecologic Cancer Patients
4. Butamax Granted Core Patent for Making Biobutanol and Distillers Grains; Offers Producers Efficient, Low-Cost Production of Biobutanol
5. Big Saver: Molderizer Offers 30% Mold Remediation Products Price Cut
6. Tri-Valley Sedation Dentist Dr. Endre Selmeczy Now Offers High-quality Dental Restorations
7. Berkshire Corporation Offers Live Chat For Americas Website and Shopping Cart
8. Salimetrics Offers New Saliva Collection Aid for Easy Collection of Passive Drool Samples
9. AMRESCO Offers New Prism Protein Marker With Vibrant Colors For Easy Band Identification
10. Dr. Ross Kaplan Offers New State-of-the-Art Wrinkle, Fine Line, and Skin Texture Improvement Treatment
11. Imperfections may improve graphene sensors
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Flat lens offers a perfect image
(Date:11/18/2014)... Sarasota, FL (PRWEB) November 17, 2014 ... novel point-of-care diagnostic tests – today announces its ... Control and Prevention’s (CDC) Get Smart About Antibiotics ... Antibiotics Week is a national campaign designed to ... local health departments, and non-profit and for-profit partners ...
(Date:11/18/2014)... (PRWEB) November 18, 2014 American ... Australia) recently formed a partnership with researchers at ... University of Technology, and the USDA’s Forest Products ... reinforced with nanocellulose. Nanocellulose is a rapidly emerging ... of the project is to replace heavy steel ...
(Date:11/18/2014)... MENLO PARK, Calif. , Nov. 18, 2014 ... leading biotechnology company in the emerging field of ... clinical program, AST-OPC1 (oligodendrocyte progenitor cells) for complete ... as one of ten "Top Advanced Therapies Projects ... "We are delighted to receive this significant industry ...
(Date:11/16/2014)... 17, 2014 The “Fluid Management ... fluid visualization systems market with an analysis and ... & irrigation, dialyzes, fluid warming and waste management. ... the fluid visualization systems by applications and regions ... market was valued at $19,285.5 million in 2013 ...
Breaking Biology Technology:RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 2American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 3Asterias Biotherapeutics Named as a "Top Advanced Therapies Projects to Watch" and Will Present at the Therapeutic Area Partnerships Conference 2Asterias Biotherapeutics Named as a "Top Advanced Therapies Projects to Watch" and Will Present at the Therapeutic Area Partnerships Conference 3Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 2Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 3Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 4
... UOP LLC, a Honeywell (NYSE: HON ) company, announced today ... technology powered a U.S. Navy F/A-18 Super Hornet flight as part of the ... , , , ... Green Hornet by the Navy, was fueled with a 50/50 mixture of Green ...
... highlights from the AACE Annual Meeting & Clinical Congress in Boston : , ... (Logo: http://www.newscom.com/cgi-bin/prnh/20090324/DC88061LOGO-b ) , ... Shows First-of-Its-Kind Hydrogel Decreases Obese Patients, Desire for Food   , ... New research indicates that a first-of-its-kind, superabsorbent hydrogel significantly increased the post-meal feeling of ...
... ... Free Oragene®•DNA Collection Kits for Classroom Use , ... Ottawa, ON (PRWEB) April 22, 2010 -- DNA ... today announced it is marking DNA Day 2010 by introducing a program geared towards ...
Cached Biology Technology:Honeywell Green Jet Fuel(TM) Powers U.S. Navy Green Hornet for Biofuels Certification Flight 2Honeywell Green Jet Fuel(TM) Powers U.S. Navy Green Hornet for Biofuels Certification Flight 3Honeywell Green Jet Fuel(TM) Powers U.S. Navy Green Hornet for Biofuels Certification Flight 4Thursday News Highlights from the American Association of Clinical Endocrinologists (AACE) 19th Annual Meeting and Clinical Congress 2Thursday News Highlights from the American Association of Clinical Endocrinologists (AACE) 19th Annual Meeting and Clinical Congress 3DNA Genotek Marks DNA Day 2010 with a Focus on Supporting Science Education 2DNA Genotek Marks DNA Day 2010 with a Focus on Supporting Science Education 3
(Date:11/10/2014)... store shelves in early 2010, and people have used ... can be tossed into a washing machine without ever ... convenience, though, has come with risks for young children. ... Hospital found that from 2012 through 2013, U.S. poison ... 6 years of age swallowing, inhaling, or otherwise being ...
(Date:11/6/2014)... groundbreaking paper from a team of Florida State University ... plants could adapt to and survive environmental swings such ... the latest issue of the journal The Plant ... of DNA and proteins) is organized in a cell ... genes are turned on and others are turned off. ...
(Date:11/5/2014)... the UTSA College of Sciences, is one of ... a two-year $300,00 National Science Foundation (NSF) Early ... supports President Obama,s BRAIN Initiative, a federal effort ... will demystify complex brain processes. , According ... into the interactions of multiple components, each working ...
Breaking Biology News(10 mins):Study finds laundry detergent pods, serious poisoning risk for children 2Maize analysis yields whole new world of genetic science 2UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3
... Nov. 21, 2011 Already partnering with 43 of ... Top 100 Innovators, NineSigma today announced a record year ... is critical to their long-term growth. "The ... never hesitate in their quest to innovate," said Andy ...
... data from electronic tags, ear bone microchemistry and fisheries catch ... of the Atlantic influences the other side. Bluefin populations ... since 1950, according to the study published today in the ... estimates the number of Atlantic bluefin tuna remaining in the ...
... FLAGSTAFF, Ariz. More peer-reviewed scientific studies ... developments and operations are needed to adequately assess their ... scientific literature review conducted by the U.S. Geological Survey ... In their literature review, the authors of the paper, ...
Cached Biology News:Surging Demand for Innovation Services Leads to Record Expansion for NineSigma 2Surging Demand for Innovation Services Leads to Record Expansion for NineSigma 3New study provides comprehensive view of the status of Atlantic bluefin tuna 2New study provides comprehensive view of the status of Atlantic bluefin tuna 3Literature review on solar energy and wildlife impacts research 2
Ubiquitin Related I Sampler Kit 10 mu g each...
Protein Tyrosine Phosphatase Sampler Kit 10g each...
Purified anti-SOCS3...
Monoclonal Antibody toSynapsin I a and I b Neurofilament associated protein from mouse brain extracts (4)....
Biology Products: