Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
krisi
User Rank
Author
re: Optical antenna said to boost signals
krisi   9/23/2010 4:21:03 PM
NO RATINGS
Douglas, this development sounds very exciting although there is obviously a fair amount of work before you can take advantage of it. I wonder whether you have any industrial sponsor for your research or is this too far for industry to notice?...Kris

Douglas Natelson
User Rank
Author
re: Optical antenna said to boost signals
Douglas Natelson   9/23/2010 4:13:44 AM
NO RATINGS
For what it's worth, this effect is present at room temperature. We ran the experiment at lower temperatures for two reasons. First, reducing the temperature hinders the mobility of the Au atoms. (At room temperature, Au is surprisingly mobile, and a Au tunnel junction will show big changes in conductance as a function of time as the Au atoms at the tips move around.) Second, we wanted to work in a decent vacuum to avoid adsorbed contaminants, and cooling helps. If you make junctions like this in ambient conditions, they are rapidly coated with a monolayer of physisorbed water and pollutants, which you don't want if you're trying to understand the underlying physics.

pixies
User Rank
Author
re: Optical antenna said to boost signals
pixies   9/22/2010 2:56:07 PM
NO RATINGS
These types of effects usually are washed out at higher temperature. Unless they can point out a way to make it work at room temperature, it will hard to find an application for it.

R_Colin_Johnson
User Rank
Author
re: Optical antenna said to boost signals
R_Colin_Johnson   9/22/2010 3:56:58 AM
NO RATINGS
Most optical materials are of the clear plastic variety, formed into optical fiber, but these Rice University researchers are using an angstrom-scale air-gap between gold electrodes to harness the amplification effect of plasmons, but at optical frequencies. Although such effects have been demonstrated before, this group claims to be the first to explain why the technique works as well as the first to measure how much optical signals can be amplified by angstron-scale nanogaps. When commercialized, this effect could enable sensors so sensitive that they detect a single molecule of nearly any substance. What application would you create if you had a single-molecule sensor?



Radio
NEXT UPCOMING BROADCAST
IoT Network Shoot Out
July 16, 1pm EDT Thursday

Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.

Brought to you by

Most Recent Comments
vasanth kumar d
 
scud
 
realjjj
 
DN@
 
AKH0
 
michigan0
 
MeasurementBlues
 
michigan0
 
Kevin Neilson
Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.