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http://macroelectronics.blogspot.com/2009/03/oleds-types-and-applications-white.html

OLEDs: types and applications - white OLEDs. This is the fifth post of the Macroelectronics.org OLEDs series. Stay tuned. White OLED is possibly the future generation of lighting source. A typical incandescent light bulb is roughly 12 lm/watt. Lumen or lm is the unit describing the perceived power of light. Therefore, lumens/watt tells us how bright the light is generated per one watt.). The energy efficiency of. Conventional incandescent light bulbs is only about 4%. Imagine a wallpaper of paper-like li...

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http://macroelectronics.blogspot.com/2008/12/hp-fdc-demo-flexible-unbreakable.html

HP and FDC demo flexible, unbreakable displays. On Dec. 8, 2008, HP and the Flexible Display Center (FDC) at Arizona State University (ASU) announced the first prototype of "affordable, flexible, unbreakable" electronic displays. Flexible displays use up to 90 percent less materials by volume than conventional displays. The unbreakable displays were created by the FDC and HP using self-aligned imprint lithography (SAIL), a proprietary technology of HP Labs. More details are here. Get our RSS feed.

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http://macroelectronics.blogspot.com/2008/12/oleds-advantages-and-challenges.html

OLEDs: Advantages and Challenges. This is the second post of the Macroelectronics.org OLEDs series. Stay tuned. OLEDs are made out of organic layers , which allows OLED displays to be lighter and thinner than LCD or LED. The thin profile of OLEDs also leads to the flexibility of the displays. Thinner and lighter displays are preferable for mobile devices. Brighter display with wider view. For an earlier post). One of the grand challenges for OLEDs is their limited lifetime because OLEDs are composed of o...

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http://macroelectronics.blogspot.com/2008/07/macroelectronicsorg-world-top-100.html

Macroelectronics.org: A World Top 100 Engineering Blog. We are pleased to announce that www.macroelectronics.org was recently ranked No. 33 in the Top 100 Engineering Blogs. As of 17 July 2008, see here. For detail list). The ranking is updating over the time. A real-time ranking badge has been embedded on the left-hand sidebar. To subscribe, simply enter your email address in the left-hand siderbar, then click "Subscribe" (No spam, guaranteed). Or you can subscribe our RSS feed. Get our RSS feed.

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http://macroelectronics.blogspot.com/2008/08/oleds-how-it-works.html

OLEDs: How it works? Macroelectronics.org will start a series of posts on OLEDs. Stay tuned. OLEDs, or organic light-emitting diodes, are thin films of organic molecules that generate light when electricity is applied. OLEDs have a potential to provide shaper, crispier, and clearer display than today’s LEDs (Light-emiting diodes) and LCDs (Liquid crystal displays). An OLED, with different layers of material, is only about 100-500 nanometers thick. The following animation illustrates how OLEDs work:.

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http://macroelectronics.blogspot.com/2008/12/active-rfids.html

This is the third post of the Macroelectronics.org RFID series. Stay tuned. An active RFID is similar to a passive RFID tag: It has similar ciruitry and an antenna to that of a passive RFID. The main difference between the two is that the active version has a battery incorporated to its circuitry. This battery can be the sole or partial source of the tag's power supply. Posted at 22:20 by J Editor: Teng Li. Title="Comments, questions, or wanna be a contributor? Get our RSS feed. Enter your email address:.

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http://macroelectronics.blogspot.com/2009/01/applications-of-rfids-part-1-of-3.html

Applications of RFIDs (Part 1 of 3). RFIDs, as mentioned before, come in several different forms, each with its own advantages and disadvantages. Passive RFIDs do not have their own power supplies, but are limited to short range communications with the reader; Active RFIDs have longer ranges, but are more susceptible to interference. Currently, in everyday use, we use RFIDs for theft prevention at stores. However, several companies have come up with several novel ideas to make lives easier.

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http://macroelectronics.blogspot.com/2008/12/passive-rfids_15.html

This is the second post of the Macroelectronics.org RFID series. Stay tuned. Pasive RFIDs are tags that do not require a power source to operate. Instead, the reader for the RFID is operated on a voltage source. With this voltage source, the reader is able to construct a magnetic field when it senses a tag is near. From this, a current is induced through the magnetic field, which allows the tag to send its signal to the reader. Image credit: Sandia National Lab). Posted at 13:17 by J Editor: Teng Li.

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http://macroelectronics.blogspot.com/2008/04/thin-film-solar-cells-introduction.html

Thin Film Solar Cells - An Introduction. Macroelectronics.org will start a series on thin film flexible solar cells. Stay tuned! Solar cells are devices that convert solar energy to electrical energy. The process in which the solar cell converts solar energy to electricity is called photovoltaic. Traditional solar cell is mostly made out of silicon. Posted at 01:42 by Ed Dechaumphai Editor: Teng Li. Title="Comments, questions, or wanna be a contributor? Get our RSS feed. Enter your email address:.

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http://macroelectronics.blogspot.com/2008/06/thin-film-solar-cells-powerfilm.html

Thin Film Solar Cells: PowerFilm. This our fourth post in the Macroelectronics.org thin film solar cells series. PowerFilm is the first and the only company now that use roll-to-roll manufacturing process to fabricate flexible solar panels. The flexible solar panels consist of several layers: transparent conductor, P-I-N device, back metal contact, and polymer substrate. The polyimide substrate used for the panel makes panels flexible, lightweight, and as thin as 0.025 mm. Image credit: PowerFilm.Inc).