Category Archives: Technology

Tiny ‘MEMS’ Device – The Future Electronic Signals’ Filter

The electronic devices are getting smaller and smaller in present days. Many big corporate have been invested in the electronics’ R&D, so that they can invent and develop tiniest electronic components.

In this case, there’s a group of researchers from Purdue University have developed a new class of tiny mechanical devices.

Based on the reports, even though the device is so tiny, but it containing vibrating, hair-thin structures, which is could be used to filter electronic signals in cell phones or other electronic devices!

Tiny 'MEMS' Devices

The research team named the devices as, “The resonators”. They can vibrate in specific patterns, cancel out signals and allows other to pass through it. Honestly, it’s a new type of “band-pass” filter, which is always being used in electronic to allow some signals to pass through a cell phone’s circuitry, but blocking other unwanted signals in the same time!

Professor Jeffrey Rhoads, an assistant professor of mechanical engineering at Purdue University described that the new tiny ‘MEMS’ devices have giving a new hope to further miniaturize band-pass filters. The device is simply a good example of a microelectromechanical system (MEMS), as it contains many tiny moving parts.

Frankly, the band-pass filter design is giving higher performance than previous MEMS technology. In addition, the new design is functioning better than the traditional linear arrangement as well! [sciencedaily]

Welcome to the World of New Plastic Semiconductor!

In general, we knew that plastic is non-conductor of electricity. That’s why, most of the plastic is being used in many industries, due to its characteristic.

However, it’s going to be changed here, as a group of researchers from the University of Washington have invented the new plastic semiconductors.

You’re wondering, “Plastic semiconductors? Are you kidding me?” Nope, it was a joke, as it’s really the semiconductors, which are being made from plastic that conducts electricity!

New plastic semiconductor

The new plastic semiconductors are cheaper, thinner and more flexible than the ordinary electronics. Believe it or not, this new technology has been applied in some gadgets. According to the news from Microsoft, the new Sony Walkman and the Microsoft Zune HD music player are going to incorporate with the new plastic semiconductors!

The research team described that they’ve successfully made charges flow in both positive and negative ways.

Samson Jenekhe, a professor of chemical engineering in University of Washington pointed out that by using the plastic semiconductors, it can transmit both positive and negative charges simultaneously.

Honestly, the discovery had overcome the major drawback of the existing organic semiconductors, which is only transmitting in positive charges.

The research team is using the new plastic semiconductor to build a transistor designed in the same way as a silicon model. Guess what! The result is impressive, as it shown that both electrons and holes move through the device instantly.

Mr. Jenekhe said the new plastic semiconductor is going to substitute the old-fashioned organic semiconductor in the upcoming years. [sciencedaily]

Flexible and Stretchable LEDs Promise a Better LED Displays in the Future?

Many industries have using LEDs, due to the low production cost and its durability. Did you know that a LED is able to provide light up to 100,000 hours? This means, it’s hundred times better than the fluorescent lamp!

Many scientists have been trying to make the LEDs into a more commercial form. In this case, new flexible and stretchable LEDs have been created through the experiments.

Based on the report, the brand new flexible and stretchable LEDs could be applied in everything, such as from bumper mounted brake lights to computer or television screens that roll up into a pen!

Inorganic LEDs

John Rogers, a scientist at University of Illinois at Urbana-Champaign described the new inorganic LEDs are very thin, where you can bend it, twist it, roll it or stretch it whatever you want.

He said that the inorganic LEDs are much more difficult to build, compare with Organic (Carbon-based) LEDs, as it needing higher temperatures and harder surfaces.

However, the inorganic LEDs are tending to have higher performance than the organic LEDs. Generally, the inorganic LEDs are brighter and more efficient than organic LEDs. That’s why, they’re frequently being used in traffic lights, flashlights or outdoor electronic billboards!

The new built inorganic LEDs are far superior to the old version, which is smaller than a 50-micron diameter hair. The tiny size gives the LEDs a very high flexibility and stretchability that no inorganic LEDs have ever achieved before! [dsc]

The High-speed and Non-Volatile Universal Memory

In the past, the scientists have already said that they want to find the way to manufacture high-speed and non-volatile universal memory devices.

Guess what! A research group from the University of Southampton’s Southampton Nanofabrication Center discovered that the Nano electromechanical systems (NEMS) available within the new clean room, is the best method to create high-speed yet non-volatile computer memory!

Dr. Yoshishige Tsuchiya, the leader of the research group explained that the high-speed, non-volatile and low-power NEMS memory is the most suitable device, especially for pen drive devices for PICs and mobile applications. In this case, it means the computers can be quickly warmed up, once it being switched on and “sleep” switches to conserve energy, when it’s not in use!

In addition, Dr. Tsuchiya mentioned that he would combine conventional silicon technology with the NEMS concept. The research team had planned to use the new equipment to doing the “Beyond CMOS” (Complementary metal-oxide semiconductor) experiment. Basically, the former involves integrating Nanoelectromechanical System (NEMS) into conventional electronic devices.

As a result, some of the advanced switches, memory and sensor devices could be easily produced and being used in the computer industry very soon![sciencedaily]

The World’s First Hovering Flight Ornithopter NAV with Two Flapping Wings

When we were young, some parents loved to bring us to the park in weekend. Could you still remember the scene, where you spent the precious time playing helicopter with your family? It sounds like a very happy moment, isn’t it?

If you’re fascinated with the helicopter, then you have to check out the World’s first hovering flight Ornithopter NAV!

Honestly, the Ornithopter NAV is a part of the DARPA Awards AeroVironment Phase II contract extension in April 2009. The Defense Advanced Research Projects Agency (DARPA) is responsible to design and develop a high-tech flying prototype for the Nano Air Vehicle (NAV) program.

According to the latest progression, the research team claimed has achieved a technical milestone, which they’ve able to control hovering flight of an air vehicle system with two flapping wings.

Dr. Hylton, the leader of the research team said that the hovering flight Ornithopter is capable to carry its own energy source. The more interesting part about the Ornithopter is it only uses the flapping wings for propulsion and control!

The final goals of the Ornithopter is to develop a super-lighted helicopter, which is can be used to hover for extended periods and flying at forward speeds up to 10 meters per second! In addition, it would be better, if it can withstand 2.5 meter per second wind and can be controlled in the range of up to a kilometer. [link]

The Amazing Discovery of the World’s Smallest Semiconductor Laser

Semiconductor, a material that has the electrical resistivity between of a conductor and an insulator, is frequently being used in many household appliances. It’s also an external electrical field changes a semiconductor’s resistivity. Normally, a semiconductor device includes the transistor, solar cells, LED diodes; the silicon controlled rectifier or digital or analog integrated circuits!

Worlds Smallest Semiconductor Laser

Many people say that it’s impossible of generating visible light in a space smaller than a single protein molecule! Well, don’t be so sure about it, as a group of researchers from the University of California, Berkeley have discovered a new breakthrough in laser physics!

Believe it or not, the team declared that they’ve found the effective ways to create the world’s smallest semiconductor laser! According to the claim, they’re not only successfully squeezed light into a tight space, but also have discovered an incredible way to keep the light energy from dissipating as it moved along!

This discovery enables the development, such as nanolasers become a reality. By using this technique, it can probe, manipulate and even characterized DNA molecules in laser speed. Furthermore, the optics-based telecommunications are becoming many times faster than the recently technology, while the optical computing would be corresponding in leap and boundaries speed! [sciencedaily]

The New OLEDs would be As Cheap as Newspapers in the Near Future!

In 30 years ago, the televisions are still considered as one of the most expensive household gadgets, as the technology in 1980s is still in a developing stage. However, with the invention of LCDs and plasma Televisions, it shown that the technology is moving in the pace of leaps and boundaries!

oled_diagram

A few days ago, the scientists from the RIKEN center in Japan have discovered the brand new method to make OLEDs, by simply using electrospray-deposited polymer films. The research team claimed that this new method have better characteristics than OLEDs, which are made from spin-coated films!

During the experiment, the researchers are using a novel dual-solvent concept to make the electrospray-deposited films smoother than before. Hence, it makes the superior devices become easier to be built!

By the way, OLEDs is the short acronym, which is meaning, “Organic light-emitting diodes”. Basically, it’s a light emitting diode that it’s emissive electroluminescent layer is composed of a film of organic compounds. The layers are usually contains a polymer substance, which is allowing suitable organic components to be deposited into it!

According to Yutaka Yamagata, the leader of the OLEDs research in RIKEN Center, said the research is currently in the final stage. The OLEDs have entered to the market, as it being used to build mobile phones and televisions’ screens. Yamagata strongly believed that the OLEDs could be manufactured as inexpensively as newspapers did, in the upcoming several years…[nanowerk]

New Technique is the key to Cheaper Electronics

Electronics gadgets have been the new trend in everyone’s daily life. Go and check out your friends/colleagues houses. You’ll at least find more than ten or more electronics gadgets in every corner of the house.

However, some of the electronic gadgets, such as the computers, are still expensive, due to the components that being used to build it.

In order to overcome the downfall, a group of scientists from the University of Minnesota had created nano-scale structures on silicon templates. It can be used repeatedly!

smoothest-surface

Basically, it’s the latest technique, which is a five-minute epoxy that can be easily found at a local hardware store.

The scientists began the experiment with a single block of silicon. After that, they placed a mask over the block and treated the exposed area with potassium hydroxide. The potassium hydroxide is used to etch various structures into the silicon chemically. As a result, the process creates a pattern in the silicon and serves as a template!

Furthermore, the smart team has discovered the way to reuse the templates. They’ll peel the metal off and revealed the ultra-smooth patterned surface underneath, instead of destroying the silicon! Or, the silicon can be saved by adding more metal on it!

The research team believed that the new technique would be able to create cheaper electronics in the near future. [discovery]

45-nanometer Chips – The New Hope of Building Ultra-fast WiFi

When the chips are getting smaller and smaller, it’s a new challenge to create a nano-sized chips, but equipped it with a more powerful functions in the same time!

Many researchers have trying to figure out the best way to create a compact nanometer chips since a few decades ago.

45nm_wafer

In this case, a group of researchers from Belgian-based nanotechnology company, IMEC has discovered the potential for 45-nanometer chips. They found out that the new nano-sized chips are the perfect electronic components to be used for radio frequency applications.

Stefaan Decoutere, an electrical engineer at IMEC described that the complementary metal oxide semiconductor (CMOS) chips, which are made by using a 45nm circuit etching method, are the newest and smallest generation of integrated circuits in the market currently!

However, Mr. Decoutere said the evaluation of successive generations of CMOS chips for analogue are typically tends to lag behind their use for digital processing. In this case, the IMEC has figured out the ways to overcome the obstacle, by performing the validation of 45 nm CMOS for radio communications at the 60GHz frequency. They’d proved that in the long term, 45nm CMOS is the preferred technology, especially for the ultra fast WiFi technology! [sciencedaily]

Nanoscale Lasers – The Gateway for Faster Computer and more Reliable Internet Access!

Laser technology is no longer a brand new thing, but it’s still has the potential to be expanded and modifying into a higher level technology!

In this case, the researchers from Arizona State University and Technical University of Eindhoven in the Netherlands have been worked out together to create a much smaller laser type – The nanoscale laser!

fire-the-laser

Cun-Zheng Ning, the professor in the School of Electrical, Computer and Energy Engineering in ASU’s mentioned that the nanoscale laser is way much powerful than the ordinary laser, which is significantly improve the performance of computers and speed up internet access!

Mr. Ning said the lasers are very common in nowadays’ world. The laser technology could be found in many electronic and electrical components. The smaller lasers are normally being used in technology that enables communications across continents.

The research team has been trying to make laser into the nanoscale, so that it can be used in the devices, which is compatible with smaller electronic components. The electronic devices can perform faster and effectively, if more lasers are used with these components! As a result, it speeds up the working of your computer and internet access up to several times. [sciencedaily]

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