Stanford researchers invent transparent li ion battery
Like the idea of a fully transparent cell phone, e-reader, or other device?
Stanford University graduate student Yuan Yang has come up with a way to make a see-through lithium ion battery, and it could pave the way for completely see-through flexible electronics (some partially transparent gadgets already exist). Developed in conjunction with Yi Cui, a professor of photon science at the SLAC National Accelerator Laboratory , the battery would cost nearly the same as a regular battery if produced on a mass scale, the creators say.
So how does one make a see-through power source? According to Stanford News , "Yang and Cui devised a mesh-like framework for the battery electrodes, with each 'line' in the grid being approximately 35 microns wide. Light passes through the transparent gaps between the gridlines; because the individual lines are so thin, the entire meshwork area appears transparent."
Yang details the research in the July 25 edition of the Proceedings of the National Academy of Sciences. The cost of developing a clear battery apparently isn't very complicated, especially since visible items like copper and aluminum can't be used.
To solve this issue, the researchers evaporated a metal film over micron-size trenches of polydimethylsiloxane (a compound found in silicone that's used in plastic surgery and contact lenses). Several other substances were included in the mix to create the nearly invisible battery, including some really fancy well-positioned electrolytes.
What's truly fascinating about this research is that the materials in the battery are very flexible, meaning that flexible OLED wristwatch or laptop might come sooner than you think.
At least one problem still remains: The battery provides about half the power of a lithium ion equivalent. "The energy density is currently lower than lithium batteries," Yang said. "It is comparable to nickel-cadmium batteries right now."
The duo, joined by Stanford students Sangmoo Jeong, Liangbing Hu, Hui Wu, and Seok Woo Lee, believe they can overcome that challenge in time as materials science advances. The group has big aspirations, with a patent filing already complete, and some even bigger dreams.
"It just looks cool," Cui said. "I want to talk to Steve Jobs about this. I want a transparent iPhone !"
Crave freelancer Christopher MacManus is now investing his energy writing for CNET after covering the Sony brand on various Web sites of his own for nearly a decade. In his free time, he enjoys cycling, FPS gaming, and his miniature Australian shepherd. Christopher is a member of the CNET Blog Network and is not an employee of CBS Interactive. E-mail Christopher .
Why Was The Cell Phone Invented - News
Like the idea of a fully transparent cell phone, e-reader, or other device? Stanford University graduate student Yuan Yang has come up with a way to make a see-through lithium ion battery, and it could pave the way for completely see-through flexible
The relationship between manufacturers of cell phone signal boosters and wireless operators has, historically speaking, been akin to the Hatfields and McCoys. For years, the two sides have gone back and forth
Limiting mobile-to-mobile minutes? Imposing an annual fee on their credit card. by wirelesscaller (1095 comments ) July 30, 2011 10:11 PM PDT Start by ditching your home phone service and go with voip like skype, gizmo, or if you have a smartphone
As our mayor, a man of principles and ethics, a man who is against waste and patronage, Rob Ford should insist on being ticketed for driving while talking on his cellphone — whether or not it might stand up in court, which is irrelevant as he has
There's an app that tells you exactly where to stand on a subway car to arrive nearest to the station exit. There's even an app to find your lost cellphone. Every day, countless new apps are invented and I wonder what's coming next.
Who Invented the Cell Phone? Dr Martin Cooper Credited for Cell ...
Who Invented the Cell Phone? Dr Martin Cooper Credited for Cell Phone Invention
Article by Tadpeachey565
Who invented the cell phone? After World War two the cell phone invention was credited by an engineer of the world- famous Motorola cell phone company, and his name is Dr. Martin Cooper. The son of a Ukrainian descendan, and now a world renounced name, Dr. Cooper received a bachelor’s degree in electrical engineering from Illinois Institute of Technology. In 1954 he started working for Motorola and at night he studied to get his master’s degree. In 1957 he finally graduated with a master’s degree.
In 1950, John F. Mitchell also graduated in electrical engineering, and in 1960 he became the chief engineer of Motorola Mobile Communications Projects. Together they became the cell phone invention pioneers. Cooper worked hard in developing the first portable handheld police radio, it was developed in 1967 for the Chicago Police Department. Back then it was all analog, not till recently with the new digital radios now becoming more and more popular.
In 1973 the creation of the first portable cellular 800 (MHZ) phone was now yearning in its prototype. At the time Motorola’s base station was trying to get clearance from the FCC. With cell phones you need frequencies in order to send information over the air. FCC (Federal Communications Commission) they are in charge of all radio signals and frequencies that are sent out over the air. They play a vital role in today’s society. Have you ever wondered why you have to turn off your phone on a plane prior to take-off? The reason is because the signals from your phone can interrupt the signals of the planes electronics in which are relayed back to the tower on the air-strip. Remember to always turn off your phone before boarding a plane.
The first cellular phone call was demonstrated in New York on April 3, 1973 near the New York Hilton hotel. Reporters flocked to the scene, the media wanted to know who invented the cell phone. What better place to make history. Especially, in the middle of the most populated city in the US. The name of the phone is called a Dyna-Tac handheld cellular phone 800 X, it weighed a whopping 2.5 lb (1.1 kg). At the time only military and big business had access to them.
Dr. Joel S. Engel head of research at Bell Labs was his rival at the time. Both companies were working neck and neck with each other, when the public would ask; “who invented the cell phone” they both wanted to say I did. Guess who received that first cellular phone call? You guessed it Bell Labs! It kind of reminds me of Steve Jobs with Apple Computer and Bill Gates with Microsoft Windows. Both companies are strong competitors in today’s markets; you can find them both on the New York Stock Exchange.
i dont use twitter to discuss private matters, thats why the cell phone was invented..
Planning ahead got tiresome. The "Honey, I just landed. Come pick me up" cell phone was invented. why-advertiWhy Was The Cell Phone Invented - Bookshelf
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Cell phones are very useful electronic devices that allow you to talk to or text message other people all over the world. But when was the cell phone invented?
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