Improved Sonar and Stealth With The Same Nanotube?
June 14, 2010 7:28 PM
comment(s) - last by
A thin sheet of multi-walled carbon nanotubes suspended in cellulose tissue can create ultra-low frequency underwater sound waves with ease.
(Source: University of Texas, Dallas)
If a submarine covered in carbon nanotubes drives in the ocean, can you still hear it?
If there is one thing navies the world over want, it's more efficient sonar and the ability to hide their own submarines from it. Of course, the downside of such a technology is the heightened probability of
more mid-ocean collisions
Last summer, University of Illinois at Urbana researchers spoke of a new metamaterial that could be used to, in essence,
guide incoming sonar waves around the hull of a submarine
. The material also holds promise for super-high-definition ultrasound machinery for hospitals.
University of Texas at Dallas researchers have developed a more task-oriented device that may promise not only improved audio cloaking technology, but
improved sonar systems in the same fell swoop
. The device, composed of some electronics and a thin sheet of multi-walled carbon nanotubes, can be used to generate ultra-low frequency sounds without using large amounts of energy or taking up much additional space or weight.
Nanotubes are perfect for this sort of underwater use -- they are both remarkably resilient and hydrophobic. Due to their inherent dislike towards each other, carbon nanotubes create a small pocket of air around themselves when submerged in water. It's this pocket that does the heavy lifting for UT Dallas's system.
After being energized, the sheets of carbon nanotubes create their sound waves by being heated and cooled. This in turn generates pressure waves in the air pocket, which directly transfer to the water around it. These generated sound waves could be use both for the submarine's own sonar system, as well as noise-canceling incoming sonar pings from other subs.
Not only can the sheets be used for sonar and cloaking, but by layering them, additional sheets can be used to reduce boundary layer loss, friction and turbulence. And not just for submarines -- aircraft could benefit from the technology as well.
Each layer of of the device's nanotubes is about 20 microns thick and has virtually no weight, being 99% porous. Easily imaginable are the space and weight savings to marine craft currently equipped with modern sonar. The sheets can be applied to virtually any shape of hull, easily conforming to curves and angles. The only drawback is the lack of (reported) computer system to manage the complex task of audio wave direction, noise cancellation and temperature management for friction control in different water temperatures.
This article is over a month old, voting and posting comments is disabled
6/15/2010 11:04:16 PM
You can do a lot with a 1/2 trillion dollar budget.
6/16/2010 3:58:13 PM
Wrap subs up with nano material, or go to Mars 64 times in a row with the same $$$...
I think I know which one is more likely to happen.
6/17/2010 1:39:22 PM
Neither will happen. Our tax dollars were already used to save the banking and automotive industries. Now if we could just pay back the $900 Billion to the countries that we owe...
"Let's face it, we're not changing the world. We're building a product that helps people buy more crap - and watch porn." -- Seagate CEO Bill Watkins
"Cloak of Silence" May Give Submarines Additional Layer of Stealth
June 18, 2009, 9:02 AM
Two Nuclear Subs Collide in the Middle of the Atlantic
February 16, 2009, 9:05 AM
Latest By Levi Beckerson
Of Turbines Large And Small
May 24, 2011, 9:07 AM
Various Alcohols Shown To Make Various Improvements on Specific Superconductor
January 11, 2011, 8:32 AM
Genetics and Taste Buds; Can Science Build Better Chocolate?
December 27, 2010, 9:01 AM
New UMass Technique Seeks to Replace Petroleum for Industrial Chemicals
November 26, 2010, 7:26 AM
New MIT Nanotech Fights Cancer Naturally
September 20, 2010, 8:30 AM
Genetic Modification Turns Killers Into Saviors
September 16, 2010, 1:13 PM
New Rensselaer Nanocomposite Kills Staph
August 17, 2010, 8:10 AM
Researchers Create Nanoscale Particles For Ultrasound Applications
August 16, 2010, 3:44 PM
NCSU Study To Help Understand Nanoparticles Inside the Body
August 16, 2010, 8:38 AM
New Lithium Metal Phosphate Batteries Made With Wax and Soap
August 13, 2010, 1:10 PM
Nail Polish May Soon be Able to Detect Date Rape Drugs
August 26, 2014, 7:57 AM
SpaceX Falcon 9-R Rocket Suffers Malfunction, Self-Destructs During Test Flight
August 23, 2014, 9:36 AM
Texas Chosen as Site for SpaceX's First Commercial Launchpad
August 5, 2014, 1:44 PM
South Carolina Prison Finds Crashed Drone Carrying Drugs, Phones
August 1, 2014, 2:49 PM
NASA's Mars 2020 Rover Gains Seven New Instruments for Exploration
August 1, 2014, 1:30 PM
NASA Opportunity Rover Breaks Record for Most Miles Traveled on Another Planet
July 29, 2014, 1:38 PM
Most Popular Articles
HTC Preps Nexus 9 With Nvidia K1 64-Bit "Denver" SoC, Android L Onboard
September 10, 2014, 10:21 PM
Quick Note: Buy an Xbox One Sept 7-13, Get a Free Game
September 4, 2014, 10:42 AM
Apple Announces Its Smartwatch: The $349 Apple Watch
September 9, 2014, 2:09 PM
Dell Announces "World's Thinnest" Tablet: The Venue 8 7000 Series
September 11, 2014, 8:51 AM
T-Mobile Launches Un-carrier 7.0, Beefs Up Wi-Fi Calling
September 11, 2014, 2:56 PM
Latest Blog Posts
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information