Featured Research

from universities, journals, and other organizations

New Technique Allows Certain Objects To Be Invisible To Human Eye

Date:
September 16, 2008
Source:
University of Granada
Summary:
Researchers in Spain have taken a step forward to realize a dream of science fiction writers and film makers: invisibility. By means of a numerical technique known as Transmission Line Matrix (TLM) Modelling method, scientists have managed to hide an object or make it invisible in a certain frequency, inside an electromagnetic simulator. Such research are key to achieving invisibility to radars and even to the human eye.

A research group of the Departments of Applied Physics and Electromagnetism of the University of Granada (Spain), directed by Professors Jorge Andrés Portí, Alfonso Salinas and Juan Antonio Morente, have taken a step forward to realize one of the biggest dreams of science fiction writers and film makers: invisibility.

Scientists of the University of Granada have managed, by means of a numerical technique known as Transmission Line Matrix (TLM) Modelling method, to hide an object or make it invisible in a certain frequency, inside an electromagnetic simulator. Such research is key to achieving invisibility to radars and even to the human eye.

The work has been carried out in collaboration with researchers of the Massachusetts Institute of Technology, and has been recently published in two papers in the journal Optics Express. The research is part of the doctoral thesis carried out by Cedric Blanchard, another researcher of the UGR who is finishing off his education in the United States.

According to the University of Granada scientists, the growing interest for electromagnetic invisibility has been partly driven, in the last years, by the existence of powerful computer resources that allow researchers to carry out specific numerical studies of such phenomena.

A new technique

In their latest research, the scientists have developed a new condensed TLM node to model meta-materials and have managed to make invisible certain objects in conditions difficultly reachable when using commercial software.

The researchers have proposed a TLM simulation of hiding structures, composed of alternating isotropic layers, imitating an anisotropic frame. They had previously implemented a new technique to simulate meta-materials with the TLM method.

"This new prospect," the authors of the project say, "leaves the usual TLM process virtually untouched; specifically, the delivery matrix is exactly the same used in classic environments, which provides a lot of flexibility when it comes to program." In this way, this research has proved that it is possible to improve the effectiveness of hiding if the electromagnetic parameters of the frame are judiciously chosen.


Story Source:

The above story is based on materials provided by University of Granada. Note: Materials may be edited for content and length.


Journal References:

  1. Blanchard, Cedric; Portí, Jorge A; Wu, Bae-Ian; Morente, Juan A; Salinas, Alfonso; Kong, Jin Au. Time domain simulation of electromagnetic
 cloaking structures with TLM method. Optics Express, 2008; 16 (9): 6461 DOI: 10.1364/OE.16.006461
  2. Blanchard, Cčdric; Portí, Jorge; Morente, Juan-Antonio; Salinas, Alfonso; Wu, Bae-Ian. Numerical determination of frequency behavior
 in cloaking structures based on L-C distributed
 networks with TLM method. Optics Express, 2008; 16 (13): 9344 DOI: 10.1364/OE.16.009344

Cite This Page:

University of Granada. "New Technique Allows Certain Objects To Be Invisible To Human Eye." ScienceDaily. ScienceDaily, 16 September 2008. <www.sciencedaily.com/releases/2008/09/080912091730.htm>.
University of Granada. (2008, September 16). New Technique Allows Certain Objects To Be Invisible To Human Eye. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2008/09/080912091730.htm
University of Granada. "New Technique Allows Certain Objects To Be Invisible To Human Eye." ScienceDaily. www.sciencedaily.com/releases/2008/09/080912091730.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) — Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) — TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) — When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins