Navigation Links
'Nanocamera' takes pictures at distances smaller than light's own wavelength

Researchers at the University of Illinois at Urbana-Champaign have demonstrated that an array of novel gold, pillar-bowtie nanoantennas (pBNAs) can be used like traditional photographic film to record light for distances that are much smaller than the wavelength of light (for example, distances less than ~600 nm for red light). A standard optical microscope acts as a "nanocamera" whereas the pBNAs are the analogous film.

"Unlike conventional photographic film, the effect (writing and curing) is seen in real time," explained Kimani Toussaint, an associate professor of mechanical science and engineering, who led the research. "We have demonstrated that this multifunctional plasmonic film can be used to create optofluidic channels without walls. Because simple diode lasers and low-input power densities are sufficient to record near-field optical information in the pBNAs, this increases the potential for optical data storage applications using off-the-shelf, low-cost, read-write laser systems."

"Particle manipulation is the proof-of-principle application," stated Brian Roxworthy, first author of the group's paper, "Multifunctional Plasmonic Film for Recording Near-Field Optical Intensity," published in the journal, Nano Letters.

"Specifically, the trajectory of trapped particles in solution is controlled by the pattern written into the pBNAs. This is equivalent to creating channels on the surface for particle guiding except that these channels do not have physical walls (in contrast to those optofluidics systems where physical channels are fabricated in materials such as PDMS)."

To prove their findings, the team demonstrated various written patternsincluding the University's "Block I" logo and brief animation of a stick figure walkingthat were either holographically transferred to the pBNAs or laser-written using steering mirrors.

"We wanted to show the analogy between what we have made and traditional photographic film," Toussaint added. "There's a certain cool factor with this. However, we know that we're just scratching the surface since the use of plasmonic film for data storage at very small scales is just one application. Our pBNAs allow us to do so much more, which we're currently exploring."

The researchers noted that the fundamental bit size is currently set by the spacing of the antennas at 425-nm. However, the pixel density of the film can be straightforwardly reduced by fabricating smaller array spacing and a smaller antenna size, as well as using a more tightly focusing lens for recording.

"For a standard Blu-ray/DVD disc size, that amounts to a total of 28.6 gigabites per disk," Roxworthy added. "With modifications to array spacing and antenna features, it's feasible that this value can be scaled to greater than 75 gigabites per disk. Not to mention, it can be used for other exciting photonic applications, such as lab-on-chip nanotweezers or sensing."

"In our new technique, we use controlled heating via laser illumination of the nanoantennas to change the plasmonic response instantaneously, which shows an innovative but easy way to fabricate spatially changing plasmonic structures and thus opens a new avenue in the field of nanotech-based biomedical technologies and nano optics," said Abdul Bhuiya, a co-author and member of the research team.

Contact: Kimani Toussaint
University of Illinois College of Engineering

Related biology technology :

1. New Kit Takes the Uncertainty Out of Lymphoma Diagnosis
2. Terminator-style info-vision takes step towards reality
3. Arteriocyte Takes the Lead in Promoting Building Future Pipeline of Women in STEM Career Fields
4. Quammen Health Care Consultants Takes Over Information Technology Reins at Faith Regional Health Services
5. Michael A. Marletta Takes Office as New President of Scripps Research Institute
6. UK takes the lead in redefining the kilogram
7. Big Ideas, Big Stakes
8. Research breakthrough takes supercomputing out of the lab
9. The future of aerospace takes off in Montreal
10. 23andMe Takes First Step Toward FDA Clearance
11. Hawaii Tech Asia Takes Hawaii & US Entrepreneurs To China
Post Your Comments:
Related Image:
'Nanocamera' takes pictures at distances smaller than light's own wavelength
(Date:12/1/2015)... 1, 2015 Frost & Sullivan is ... program addresses ways companies can innovate and transform ... --> ... --> ... well as the disrupting factors altering the industry, ...
(Date:12/1/2015)... (PRWEB) , ... December 01, 2015 , ... ... (AFM) announces Park NX10 SICM Module, an add-on scanning ion conductance microscopy module ... power of SICM to an AFM. , Park SICM benefits virtually all materials ...
(Date:12/1/2015)... , December 1, 2015 Dr. Harry Lander , President ... serving as Chief Science Officer and recruits five ... Harry Lander , President of Regen, expands his role to ... recruits five distinguished scientists to join advisory team ... expands his role to include serving as ...
(Date:11/30/2015)... ... November 30, 2015 , ... Global Stem Cells Group ... a new closed system for isolating adipose-derived stem cells. The announcement starts a new ... adipose tissue. SVF is a component of the lipoaspirate obtained from liposuction of excess ...
Breaking Biology Technology:
(Date:11/20/2015)... , November 20, 2015 NXTD ... focused on the growing mobile commerce market and creator ... Gino Pereira , was recently interviewed on The ... air on this weekend on Bloomberg Europe , ... . --> NXTD ) ("NXT-ID" or the ...
(Date:11/17/2015)... PARIS , November 17, 2015 ... November 2015.   --> Paris from ... --> DERMALOG, the biometrics innovation leader, has invented the ... and fingerprints on the same scanning surface. Until now two ... fingerprints. Now one scanner can capture both on the same ...
(Date:11/12/2015)... golden retriever that stayed healthy despite having the gene ... new lead for treating this muscle-wasting disorder, report scientists ... and Harvard and the University of São Paolo in ... pinpoints a protective gene that boosts muscle regeneration, ... Children,s lab of Lou Kunkel , PhD, is ...
Breaking Biology News(10 mins):