Capital Wired

Keeps You Updated

Saturday, April 17, 2021
Log in
  • Headlines
  • Business
  • Health
  • Tech & Science
  • Sports
  • World
  • US
  • Latest News
    • How To Make Your Own Home-Brewed Morphine
    • Using Mouthwash Too Often Puts You at Risk of Obesity and Diabetes
    • Walmart to Solve its Supply Chain Issues and Further Cut Down on Costs
    • The World’s Most Expensive Christmas Decorations
    • Netflix Hopes to Balance Data Limit With Great Video Quality
    • Joji Morishita says Japan Will Resume Whaling
    • The Most Beloved Plastic Surgeries Among Americans
    • Skype for Web Allows Non-Users to Take Part In Its Online Chats

Pages

  • About Capital Wired
  • Contact Us
  • Privacy Policy GDPR
  • Reprint & Licensing
  • Staff
  • Terms of Use

Recent Posts

  • Here’s Why Your Brain Keeps Worrying about Everything June 29, 2018
  • Don’t Throw That Sunscreen after Summer Is Up June 29, 2018
  • Analysts: Currency War between U.S. and China Might Be Looming June 28, 2018
  • Starbucks Rival The Coffee Bean & Tea Leaf Opening 100 Shops June 27, 2018
  • Study Finds We Are Alone in the Universe June 26, 2018
  • Restaurant Owner Not Sorry for Booting Sarah Sanders June 26, 2018
  • Beware of the Hidden Salt in Your Food! June 25, 2018

Magic Magnetic Mirrors, Reflecting Light In Mystical Ways

October 17, 2014 By Rebecca McGhee Leave a Comment

SONY DSC

Recently, the scientists have revealed for the first time in Optica report, “There is a new type of mirror, which functions like no other – it relinquishes a proverbial shiny metallic surface and rather reflects infrared light by using an unusual magnetic property of a non-metallic meat-material.

Researchers are able to incarcerate and harness electromagnetic radiation by placing nano-scale antennas at or very near the surface of these so-called “magnetic mirrors” that evolve enticing potential in new classes of chemical sensors, solar cells, lasers, and other optoelectronic devices.

Michael Sinclair, co-author on the paper and a scientist at Sandia National Laboratories in Albuquerque, New Mexico, USA who co-led a research team with fellow author and Sandia scientist Igal Brener stated that, “We have achieved a new milestone in magnetic mirror technology by experimentally demonstrating this remarkable behavior of light at infrared wavelengths. Our breakthrough comes from using a specially engineered, non-metallic surface studded with nano-scale resonators.”

Based on the element tellurium, these nano-scale cube-shaped resonators are significantly smaller than the width of a human hair and even tinier than the wavelengths of infrared light that is necessary to achieve magnetic-mirror behavior at these incredibly short wavelengths.

Sinclair explained, “When it comes to the size and shape of these resonators, they are critical as their magnetic and electrical properties that enable them to intermingle distinctively with light, scattering it across a specific range of wavelengths to produce a magnetic mirror effect.”

Early Magnetic Mirror Designs

When it comes to the traditional mirrors, they have the ability to reflect light by interacting with the electrical component of electromagnetic radiation. Due to this, though, they do more than reverse the image; they also reverse light’s electrical field eventually causing no impact on the human eye. But, it does have major implications in physics, particularly at the point of reflection where the opposite incoming and outgoing electrical fields produce a canceling effect. Due to the temporary squelching of light’s electrical properties, it prevents components like nano-scale antennas and quantum dots from interacting with light at the mirror’s surface.

In contrast, a magnetic mirror has the ability to reflect light by interacting with its magnetic field, preserving its original electrical properties. Brener stated that, “A magnetic mirror, thus, develops a very strong electric field at the mirror surface, enabling maximum absorption of the electromagnetic wave energy and paving the way for exciting new applications.”

Though, unlike silver and other metals, there is no natural material that got the ability to reflect light magnetically. Magnetic fields can reflect and even bottle-up charged particles like electrons and protons. But photons, which have no charge, pass through freely.

Brener added, “Nature doesn’t provide a way to magnetically reflect light. Thus, scientists, are producing meta-materials (materials not found in nature, engineered with specific properties) that has the ability to create the magnetic-mirror effect.

At first, this could only be achieved at long microwave frequencies that will allow only a few applications like microwave antennas.

Some other researchers have recently achieved limited success at shorter wavelengths using “fish-scale” shaped metallic components. Though, these designs, faced substantial loss of signal, along with an uneven response due to their particular shapes.

Mirrors Without Metals

In order to overcome these implications, the team of researchers developed a specially engineered two-dimensional array of non-metallic dielectric resonators (nano-scale structures) that robustly interrelate with the magnetic component of incoming light. Over the former designs, these resonators have a number of important advantages.

Initially, tellurium, a dielectric material used, has much lower signal loss than metals do, making the new design much more reflective at infrared wavelengths and developing a much stronger electric field at the mirror’s surface. Secondly, the standard deposition-lithography and etching processes were used to manufacture nano-scale resonators that are already widely used in industry.

When it comes to the reflective properties of the resonators, they emerge because they behave, in some respects similar to the artificial atoms, first absorbing and then re-emitting photons. On the other hand, atoms naturally do this by absorbing photons with their outer electrons and then re-emitting the photons in random directions. This is the way how atmospheric molecules scatter specific wavelengths of light, causing the sky to appear blue during the day and red at sunrise and sunset.

The meta–materials in the resonators achieve a similar effect, but absorb and re-emit photons without reversing their electric fields.

Proof of the Process

In order to confirm that the researchers design was actually behaving like a magnetic mirror needs exquisite measurements of how the light waves overlap as they pass each other coming in and reflecting off of the mirror surface. As, on reflection, normal mirrors reverse the phase of light, proof that the phase signature of the wave was not reversed would be the “smoking gun” that the sample was behaving as a true magnetic mirror.

In order to detect this, the Sandia team used a technique dubbed as time-domain spectroscopy that has been widely used to measure phase at longer terahertz wavelengths. Only some groups in the world have revealed this technique at shorter wavelengths (less than 10 microns), researchers stated. This technique has the ability to map both the amplitude and phase information of a light’s electric field.

Sheng Liu, Sandia postdoctoral associate and lead author on the Optica study stated that, “The results of the study clearly indicates that there was no phase reversal of the light. This was the ultimate revelation that this patterned surface behaves like an optical magnetic mirror.”

Filed Under: Tech & Science Tagged With: Brener, cube-shaped, dielectric, electromagnetic radiation, Electrons, infrared wavelength, light, Magnetic mirror, Michael Sinclair, microwave antennas, nanoscale, non-metallic, Optica report, Photons, Protons, reflect, resonator, Sinclair, standard deposition-lithography, tellurium, terahertz, time-domain spectroscopy

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Recent Articles

dc logo on black galaxy background

Ava DuVernay to Direct DC’s New Gods Adaptation

March 16, 2018 By Rebecca McGhee Leave a Comment

leonardo davinci's signature in black

Is DaVinci’s Record Breaking Painting Authentic?

November 20, 2017 By Rebecca McGhee Leave a Comment

stephen hawking

Stephen Hawking Makes Gloomy Prediction For Earth In A 100 Years

May 7, 2017 By Deborah Nielsen Leave a Comment

"Dwayne Johnson not dead"

Dwayne Johnson Died this Week or Not

January 19, 2016 By Jason Leathers 3 Comments

There Are At Least Three More Seasons of Game of Thrones To Go

July 31, 2015 By Rebecca McGhee Leave a Comment

Homelessness Soars in L.A., Officials Pledge to House Everybody by 2016

May 12, 2015 By Brian Galloway Leave a Comment

FBI Releases National Report on Slain Police Officers, Figures are Alarming

May 12, 2015 By Rebecca McGhee Leave a Comment

New York Nuclear Plant Partially Shut Down due to Hudson Oil Slick

May 11, 2015 By Jason Leathers 2 Comments

Obama Draws Heat from Democrats over Asia Trade Deal

May 9, 2015 By Rebecca McGhee Leave a Comment

Florida Governor Changes Stance on Obamacare Once More, Budget on Hold

May 9, 2015 By Brian Galloway Leave a Comment

Secret Service to add an Extra Layer of Spikes to White House Fence

May 8, 2015 By Chen Lai Leave a Comment

Police Arrested Suspect in death of Student who tried to Sell Car on Craigslist

May 8, 2015 By Deborah Nielsen 1 Comment

AccuWeather.com: 2015 Atlantic Tropical Storm Season is Officially Open

May 7, 2015 By Deborah Nielsen Leave a Comment

Illinois Student Found Dead after Trying to Sell his Car on Craigslist

May 7, 2015 By Deborah Nielsen 2 Comments

Categories

  • Business
  • Headlines
  • Health
  • Sports
  • Tech & Science
  • US
  • World

Copyright © 2021 capitalwired.com

About · Privacy Policy · Terms of Use · Contact