• 3 minutes Nucelar Deal Is Dead? Iran Distances Itself Further From ND, Alarming Russia And France
  • 5 minutes Don Jr. Tweets name Ukraine Whistleblower, Eric Ciaramella. Worked for CIA during Obama Administration, Hold over to Trump National Security Counsel under Gen McCallister, more . . . .
  • 9 minutes Shale pioneer Chesepeak will file bankruptcy soon. FINALLY ! The consolidation begins
  • 12 minutes China's Blueprint For Global Power
  • 1 min Science: Only correct if it fits the popular narrative
  • 4 hours Crazy Stories From Round The World
  • 1 day EU has already lost the Trump vs. EU Trade War
  • 12 hours What are the odds of 4 U.S. politicians all having children working for Ukraine Gas Companies?
  • 18 hours Do The World's Energy Policies Make Sense?
  • 1 day China's Renewables Boom Hits the Wall
  • 3 hours Iran Burning: Shock Gas Price Hike Triggers Violent Protests After Subsidy Cuts
  • 1 day Forget out-of-date 'dirty oil' smear, Alberta moving to be world's cleanest oil industry
  • 21 hours Impeachment Nonsense
  • 3 hours Atty General Barr likely subpeona so called whistleblower and "leaker" Eric Ciaramella
  • 1 day Water, Trump, and Israel’s National Security
  • 2 days Pioneer's Sheffield in Doghouse. Oil upset his bragging about Shale hurt prices. Now on campaign to lower expectations, prop up price.
  • 2 days Tesla Launches Faster Third Generation Supercharger

Breaking News:

Russia Plans To Boost Crude Oil Exports

The Birth Of An LNG Superpower

The Birth Of An LNG Superpower

Iran’s rapprochement with Qatar and…

The One Factor Driving Today’s Oil Markets

The One Factor Driving Today’s Oil Markets

The trade war appears to…

Researchers Develop Super-Efficient 3-D LCD Display

Imagine a 3-D LCD display on your e-book that hardly ever needs recharging because it draws power only when you turn it on or when you go to the next page.

Stop imagining. Researchers from the Hong Kong University of Science and Technology have come up with an ultra-thin LCD screen capable of holding 3-D images without the benefit of electricity. The only unexciting thing about the device is that, for now at least, it’s limited to gray scale and its refresh rate is too slow to allow displaying video.

LCD screens, which are used in everything from digital watches to television screens, conventionally are made up of liquid crystal molecules that are held between plates of polarized glass. Electrical current is passed through this sandwich, changing the orientation of the liquid crystals and changing how they interact with polarized light, depending on the amount of current the crystals receive.

Related: New Technology Could Have Us Generate Power As We Walk

Electrodes provide the current in these traditional LCDs. The Hong Kong researchers scrapped the electrodes, which not only cut the space needed for the apparatus, but also dramatically decreased its need for energy.

Therefore, once an image is drawn on the screen, known as a bi-stable display, the device needs no power to keep it there. And the screen draws power only when the image changes. This makes the device especially suitable for devices that mostly show static images, such as e-book readers.

In the paper on their work published in the Optical Society (OSA) journal Optics Letters, the researchers said actually building a new kind of LCD was not a particularly difficult task.
Or as Abhishek Srivastava, one of the authors of the paper, told OSA’s news department, “Because the proposed LCD does not have any driving electronics, the fabrication is extremely simple. The bi-stable feature provides a low power consumption display that can store an image for several years.”

This simplicity allowed the Hong Kong researchers to take their work a step further by designing a screen that displays 3-D images. These images appear three dimensional because a human’s two eyes are a few inches apart, feeding the brain slightly different images that together express depth.

Related: Breakthrough In Oil Sands Waste Treatment

Old 3-D comic books and even modern 3-D movies manage to emulate perspective by printing two images seen from slightly different angles on a flat surface and provide readers (of comic books) or viewers (of movies) with special spectacles that filter the light so that one eye sees one image and the other sees a different one.

Because that process is tedious, the Hong Kong researchers achieve the 3-D effect by creating a three-way shift in the polarization of the display’s light. One third of the light is shifted 45 degrees to the right, a second third is shifted 45 degrees to the left, and the third is kept at normal polarization. This three-part image is then filtered and viewed, like conventional 3-D images, through special glasses.

Don’t expect to be able to buy such a screen anytime soon, though. Srivastava says he and his fellow researchers are busy figuring out how to speed up its refresh rate and make it show colors.

By Andy Tully of Oilprice.com

More Top Reads From Oilprice.com:



Join the discussion | Back to homepage

Leave a comment

Leave a comment

Oilprice - The No. 1 Source for Oil & Energy News
Download on the App Store Get it on Google Play