Chinese Scientists Make Breakthrough in Replacing WiFi With LiFi

https://youtu.be/a1qvAy_9lLU

CHANGCHUN, Oct. 3 (Xinhua) -- Chinese scientists have made a breakthrough in creating full-color emissive carbon dots (F-CDs), which brings them one step closer to developing a faster wireless communication channel that could be available in just six years.

Light Fidelity, known as LiFi, uses visible light from LED bulbs to transfer data much faster than radio wave-based WiFi.

While most current research uses rare earth materials to provide the light for LiFi to transmit data, a team of Chinese scientists have created an alternative -- F-CDs, a fluorescent carbon nanomaterial that proves to be safer and faster.

"Many researchers around the world are still working on this. We were the first to successfully create it using cost-effective raw materials such as urea with simple processing," said Qu Songnan, an associate researcher at Changchun Institute of Optics, Fine Mechanics and Physics, the Chinese Academy of Sciences, which leads the research.

Qu said rare earth has a long lifespan which reduces the speed of LiFi transmission. However, F-CDs enjoy the advantage of faster data transmission speeds.

In previous studies, carbon dots were limited to the emission of lights such as blue and green. The new nanomaterial that Qu's team has developed can emit all light visible to the human eye, which is a breakthrough in the field of fluorescent carbon nanomaterial.

Qu said this is significant for the development of LiFi, which he expects to enter the market in just six years.

A 2015 test by a Chinese government ministry showed that LiFi can reach speeds of 50 gigabytes per second, at which a movie download can be completed in just 0.3 seconds

Source: Xinhua


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Malaysian worked as janitor is a serious innovator

TV star: Dr Walter showing the company’s big LED television.

From Janitor to serious innovator

MALACCA: As a university student, he worked as a janitor to earn some pocket money.

Dr Gabriel Walter, 37, who studied electrical engineering at an American university, now holds about 100 patents in electronic and electrical innovations.

The Kelabit boy from Bario, Sarawak, wants to break the monopoly of foreign brands selling their products at exorbitant prices.

For example, he has introduced a big screen light emitting diode (LED) television, which includes all connecting gadgets, and priced at about RM6,000 compared to popular foreign brands that can cost almost RM20,000.

There is also a smartphone application, costing just a few hundred ringgit, that can integrate home appliances with just a cyberspace connectivity.

“I am determined to make available quality, feature-perfect appliances that can communicate with any other devices in an ad hoc network with a single connectivity.

“All these wonders are packaged and assembled here and sold at affordable prices. It is a Malaysian invention,” he said in an interview.

Dr Walter, who was a Mara scholar, studied at the University of Illinois at Urbana-Champaign where he earned a doctorate.

He was an Adjunct Assistant Professor from 2003 to 2009 at the university, where he was also once a senior research scientist.

Despite his long list of achievements, Dr Walter has not forgotten his humble beginnings where his father used to live in a longhouse.

At a tender age, he started selling groundnuts to help supplement the family income.

“Life was hard then. I used to work as a janitor when I was studying in the United States as the scholarship was only adequate to cover my education,” he said.

Several months ago, Dr Walter returned to Malaysia for good after receiving a government grant of RM2mil for research and development before setting up his own manufacturing plant in Batu Berendam.

“I must thank former Chief Minister Tan Sri Ali Rustam who was persistent that I should set up a plant in Malacca when he first met me in 2006 during a bio-tech conference in the United States,” he said.

Dr Walter established Quantum Electro Opto Systems Sdn Bhd (QEOS) and launched its first commercial product based on its patented high-speed light-emitting technology known as tilted charge dynamics in 2013.

QEOS is based here with an office in the Silicon Valley, California, where Dr Walter is the chief executive officer.

His university mentors – professors Nick Holonyak Jr and Milton Feng – are part of his team.

The QEOS website stated that Prof Nick Holonyak Jr is widely regarded as the inventor of LED.

The company, it said, wanted to “pioneer the commercial development of high speed, low-cost and power efficient fiber optics communication solutions”.

By R.S. N. Murali The Star/ANN

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