• Stanford University Engineering Professor Imagines See-through iPhone with Transparent Battery

    Posted on August 9th, 2011 David Brooks | No comments

    Have you ever imagined having a see-through iPhone 4, other than the elusive white iPhone 4?  Or have you ever got such kind of transparent devices? Thanks to the Stanford University engineering professor, Yi Cui, now you may have the chance to get a see-through invisible iPhone 4 with the transparent battery designed and developed by him. The following post was written by Christina Hernandez of http://www.smartplanet.com/blog/, which made a detailed explanation of this new transparent battery. Check the bellow content to get a detailed acknowledgement of transparent batteries.

    iPhone 4 white

    Written by Christina Hernandez.

    Forget the elusive white iPhoneYi Cui, an engineering professor at Stanford University, imagines a transparent iPhone.

    Together with graduate student Yuan Yang, first author on a recent paper in the Proceedings of the National Academy of Sciences, Cui developed a transparent battery — potentially the final component needed to make fully transparent electronics. “If the batteries were not transparent,” Cui said in an interview, “then the device wouldn’t be transparent.”Transparent Battery

    Because the key components of batteries cannot be replaced or made transparent, Cui used a trick of the eye to develop the battery. He created a mesh-like framework for the battery electrodes. ”Each line in the grid is smaller than 50 microns,” he said. “When a human being looks at an object that’s smaller than 50 microns, it’s not visible. That’s how we make it transparent.”

    The team found a transparent alternative to copper and aluminum in polydimethylsiloxane, a compound used in contact lenses, according to a news release. They deposited metals onto the rubbery material to make it conductive and poured it into molds to build the transparent grids. Yang created a transparent substance that served as both an electrolyte and a separator and inserted it between the electrodes, creating a functional battery. “It’s completely new,” Cui said.

    Now, the researchers are working to increase the capacity of the transparent battery, which is only about half as powerful as its lithium-ion counterparts. And they’re hoping others take notice. “We’d like industry to pick up our concept,” Cui said, “and do the commercialization of these transparent batteries.”

    From there, the possibilities are varied. ”Imagine you have a watch that you want to look transparent,” Cui said. “You can have your iPhone be transparent. You can have your laptop be transparent.”

    Watch a video about the transparent batteries.

    Photo: Transparent battery

    Sources from: http://www.smartplanet.com/blog/pure-genius/transparent-battery-developer-imagines-see-through-iphone/6876?tag=nl.e550

    Related useful readings:

    How to rip DVD to iPhone 4 to watch DVD on iPhone 4 freely

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    How to convert video to iPhone 4 for unlimited video playback on iPhone 4

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  • 8 tips to save and prolong iPhone 4 battery life to maximize iPhone utility

    Posted on May 26th, 2011 David Brooks | No comments

    Many of my friends have been complaining about the gradually weakening battery performance of their iPhone 4. And also, online complaints about the iPhone battery use could be seen everywhere. Actually the iPhone 4 battery is made pretty well. The problem is the improper use of iPhone 4 owners. The official materials of iPhone 4 battery shows that the battery would retain 80% performance of original battery after more than 400 cycles of charging and discharging if well maintained and properly used.

    iPhone 4


    Here I would like to share some knowledge with all iPhone users on how to save and prolong iPhone battery life to maximize iPhone utility. Hope the info would be helpful to better your iPhone experience.

    About iPhone 4 battery: Lithium-ion battery

    iPhone 4 adopts Lithium-ion battery (sometimes Li-ion battery or LIB) as its power source, the strongest point of which is the No Memory Effect. Memory effect refers to the phenomenon of nickel-cadmium rechargeable batteries holding less battery volume along with repeated charging and discharging cycles. The No Memory Effect of Li-ion battery means the Li-ion battery volume would not reduce while charging and discharging and the Li-ion battery could be full recharged in less than 3 hours with the 4.2V constant voltage charger.

    How to charge for fresh iPhone 4

    It is improper to pursue over charging (charging longer than 12 hours) and over discharging (recharging until the battery is out and automatically shuts off, both of which belong to the nickel-cadmium rechargeable batteries. The following tips would be useful when you are to charge iPhone 4:

    (1) Charge battery according to the standard time and procedure specified on the guidebook, even for the first three times.

    (2) When you are reminded for the low battery, you should recharge battery in time, no waiting for battery out and automatically power off.

    (3) No special ways to activate iPhone Li-ion battery. The Li-ion battery would automatically activate when charged in proper chargers.

    (4) Stay your iPhone Li-ion battery away from high and low temperature conditions: the Li-ion battery life would be shortened in very high temperature and extremely low temperature conditions. Reference temperature of Li-ion battery: charging temperature: 0℃~45℃; discharging temperature: -20℃~65℃; work temperature: 0℃~40℃.

    How to save iPhone 4 Li-ion battery

    New York Times tech columnist David Pogue recently got four iPhone battery tips from an Apple store Genius, while Mr Rick Broida made an overview of these advices along with his thoughts to sum a Six Ways to Improve iPhone Battery Life. Here I would like to make a list of advices from the two knowledgeable experts and add some additional tips from yours truly.

    1. Turn off push e-mail: Turn off the “Push” feature, and set it to Manually instead (in Settings->Mail, Contacts, Calendars->Fetch New Data), then your iPhone checks for e-mail only when you actually open the e-mail app, rather than every 15 minutes.

    2. Turn off GPS tracks, Bluetooth, WiFi: These are all high power consumption apps, so if not needed, turn them off. Turn off GPS: In Settings ->General->Location Services; turn off Bluetooth: In Settings ->General->Bluetooth; turn off WiFi: In WiFi Settings ->WLAN.

    3. Turn off notifications: In Settings -> Notifications. Every notification would eat your battery juice, so turn off unnecessary ones.

    4. Manually terminate background apps: The background apps would be not worth the battery boost you might get

    5. Lower the screen brightness: The brighter the screen, the more power consumed.

    6. Keep it out of your pocket: The hotter your iPhone gets, the faster the battery will die.

    7. Turn off 3G connection while not surf internet: In Settings->General->Network. If not needed, 3G connection is advised to turn off for its powerful power consumption. Make sure you open the 2G connection.

    8. Other power consumption use of iPhone: SBS app, playing videos, recording videos, 2D and 3D games, etc.

    Some other useful How-Tos:

    How to rip DVD to iPhone to watch DVD movies on iPhone
    How to rip Blu-ray to iPhone to watch Blu-ray movies on iPhone
    How to convert video to iPhone to freely watch videos on iPhone

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