Bicycle with No Pedals

The HMK 561 is a carbon fiber bike with special electrical properties that hold power right inside the frame. Carbon fiber is highly conductive so the designer uses it as a power distribution network instead of wires.

The power drives the lights and the motors in between the rims but get this… there’s regenerative braking. All that energy drives a system that turns the wheels using a counter-turning axel in lieu of gears and chains. Far fetched? No, because there’s already a prototype.

Check out its pictures at: http://www.yankodesign.com/2010/03/11/advance-carbon-fiber-electric-bike/

Dental Hearing Aid

Dental Hearing Aid Technology from Sonitus Medical

SoundBite hearing system is intended for patients who suffer from single sided deafness, conductive hearing loss, or mixed hearing loss and seek a non-surgical, non-invasive, hearing device that delivers high fidelity sound.

Sonitus Medical out of San Mateo, California is a company that's betting on bone conducting dental hearing implant technology. The SoundBite Hearing System that the firm is developing consists of a unit that has a microphone and wireless transmitter, and a tiny speaker that attaches to rear teeth to resonate and transmit the audio mechanically to the cochleae. The idea for this technology is not new and maybe risky, but Sonitus Medical seems confident it can earn regulatory approval and introduce an all new hearing aid technology to market.

The SoundBite hearing system consists of both a BTE (behind the ear) microphone unit, housing the receiver, wireless transmitter, and attached microphone, and a discreet, removable ITM (in the mouth) hearing device. An inductive charger unit is provided to charge the BTE microphone unit and ITM hearing device.

SoundBite is designed to detect sound using a tiny microphone placed in an open-fit dome within the ear canal of the impaired ear. This nearly invisible microphone is attached by a thin tube to a transmitter unit called a BTE worn behind the ear. Placing the microphone in the ear canal is intended to allow the SoundBite hearing system to capitalize on the natural acoustic benefit provided by the patient's own pinna or outer ear to capture and direct sound.

Read full article at: http://www.medgadget.com/archives/2010/02/dental_hearing_aid_technology_from_sonitus_medical.html

Charge your cell phone by plugging in your jeans: Fabric Batteries

Fabric Batteries for Clothes that Can Conduct Electricity

Breakthrough:
A carbon-nanotube dye that can turn fabrics into batteries to make clothes that conduct electricity. All you have to do is dip a piece of fabric in a solution infused with tiny tubes of carbon, and it turns into a battery. Simply coating a piece of cotton or polyester with the formulation transforms it into a high performance energy storage device that is a boost to the emerging field of wearable electronics.

The approach was first demonstrated by Stanford University in 2009 on plain copying paper, but now it has been applied to textiles for the first time. “Wearable electronics represent a developing new class of materials... which allow for many applications and designs previously impossible with traditional electronics technologies," the authors wrote in the journal Nano Letters. The research could pave the way to unobtrusive wearable electronics for use in health monitoring systems, the fashion and gaming industries, and for any application that requires computers.

A team led by Prof Yi Ciu incorporated single-walled carbon nanotubes - cylinders of carbon about a billionth of a meter across – into the textiles by a simple dying process. The dye is made by dispersing carbon nanotubes in water and using sodium dodecylbenzenesulphonate as a surfactant. The material is dipped into the mixture and then dried in an oven at 120 degrees Celsius for ten minutes to remove water.

The conductivity of the material is increased by simple mechanical pressing and boosted still further by increases in the number of dipping and drying steps. The fabric maintains its properties when stretched and pulled and there is no decrease in conductivity - even when it is rinsed in water. Cotton proved to be up to 3 times better for energy storage than man-made fibers as its porous nature allowed for better ion transport.

Experts believe the technology could be commercialized in a short space of time, and that its uses will not be limited to just energy storage devices. According to Peidong Yang, a professor of chemistry at the University of California-Berkeley it has the potential to be a low-cost flexible electrode for any electrical device.The Stanford researchers say the next stages of their research are to use the approach with materials that can store more energy, and then demonstrate how to integrate the textile energy storage devices into clothes.

Read more at: http://www.tcetoday.com/tcetoday/newsdetail.aspx?nid=12465

New Materials Inspired Spider Webs

New Materials Inspired by Water-Catching Properties of Spider Webs

Based on their research Lei Jiang and colleagues at the Chinese Academy of Sciences in Beijing created an artificial silk that mimics the water collecting abilities of natural webs. Whilst much is known about the strength of webs the scientists were keen to probe the lesser known ability of spider silk to capture and hold onto rain and morning dew – a mechanism that saves a spider from having to find a water source.

Using a powerful scanning electron microscope and a light microscope the team studied how the spider silk changes its structure when it becomes soaked in water vapour.
At the nanoscale dry spider silk resembles a necklace-like structure. It is formed from hydrophilic knots of silk connected by smooth and slender stretches known as joints. When water condenses on these knots they shrink into densely packed structures that are shaped like spindles. Moist droplets that hang from the spaces in between are drawn toward their nearest spindle-knot, where they gather in larger droplets. The difference in texture between the rough knots and the smooth joints aids the water movement.

Following this research Jiang’s team fabricated fibers that copied these properties. To do this artificial silks were formed by coating nylon fibers with poly(methylmethacrylate)/N,N-dimethylformamide-ethanol, which dries in tiny knots just like those in real spider silk. “Our artificial spider silk not only mimics the structure of wet-rebuilt spider silk but also its directional water collection capability,” the scientists claim.

The new material could be used to upgrade fog-catching nets such as those deployed in the coastal Andes that are providing people with water that they otherwise don't have access to. If the technology is commercialized it could be of great to benefit to communities living in rain-starved areas of the world.

Genetically Engineered Tadpoles glow to indicate Pollution

Genetically Engineered Glowing Tadpoles Detect Pollution

A new environmental monitoring system. Tadpoles have been genetically engineered to express a protein that lights up like a fairground in the presence of pollutants.

Researchers in France and a University of Wyoming professor have developed an innovative application of the technology by genetically engineering tadpoles to monitor heavy metal pollution in water. The system offers a way of rapidly detecting the physiological effects of environmental pollutants and is cheaper and more convenient than traditional means.

In this new approach African clawed frog tadpoles (Xenopus laevis) are modified with jellyfish genes so that they fluoresce when exposed to toxins. They light up in response to dosages that could be harmful to a human, and can indicate the presence of several different types of chemicals at the same time. Some tadpoles have been engineered to glow in the presence of metals, and others in response to plastics.

The scientists involved in this project are already looking to future applications for their tadpole technology. They believe the genetically engineered animals could be deployed to detect toxins in food. Foodstuffs could be turned into liquid and put into the aquarium.

In addition, future genetically engineered tadpoles could fluoresce different colors depending on the pollution they encounter. This requires genes that fluoresce different colors such as some coral genes that glow red.

Read more at: http://www.usnews.com/science/articles/2009/12/28/engineered-glowing-tadpoles-detect-pollution.html

Plastic Houses

Affresol makes modular portable homes from recycled plastic

After working with Cardiff and Glamorgan universities for two years, Affresol Ltd., an innovative manufacturer of high quality, low cost, quick construction systems, has developed a new material called Thermo Poly Rock (TPR) from recycled plastics and minerals. The Building Research Establishment (BRE) and the Carbon Trust also played a vital role in developing the revolutionary construction material. Now the company is using this newly developed material in making eco-friendly homes, each of which is made up of four tons of it. Until date, the company has recycled 18 tons of waste plastic in making modular portable buildings.

Ian McPherson, Affresol managing director, says, “ Every country in the world has issues with waste and we now have an opportunity to turn waste into an enduring housing resource that is 100% recyclable.”

Making use of a patented low energy cold process, Affresol converts the plastics into concrete, waterproof, fire retardant TPR panels. These panels form the load-bearing frame of the house and can support brick, block or stone, when it’s properly insulated and plastered. The roof is tiled with recycled materials. When the inhabitants abandon their living place – estimated life of the house is 60 years – the remnants of the TPR could be recycled again. Affresol will soon be launching a range of eco-friendly modular homes made from recycled plastic waste.

Read more at: http://news.bbc.co.uk/2/hi/uk_news/wales/8531170.stm

Check out the video: http://www.youtube.com/watch?v=BZ0FSX8i6S0&feature=player_embedded

A cost-effective solution to make city buses cheaper and greener

Ultracapacitors Make City Buses Cheaper, Greener

Buses with ultracapacitors stop at recharging stations, which double as bus stops, to recharge in less than a minute. A fleet of 17 buses near Shanghai has been running on ultracapacitors for the past three years, and in October 2009 that technology came to the Washington, DC, for a one-day demonstration. Chinese company Shanghai Aowei Technology Development Company, along with its US partner Sinautec Automobile Technologies, predict that this approach will provide an inexpensive and energy efficient way to power city buses in the near future.

A bus with ultracapacitors uses 40% less electricity compared to an electric bus with lithium-ion batteries, and requires just one-tenth the energy cost of a typical diesel-fuelled bus, which would save about $200,000 during the life of the vehicle. Plus, the buses are environmentally friendly: "Even if you use the dirtiest coal plant on the planet, it generates a third of the carbon dioxide of diesel when used to charge an ultracapacitor," said Dan Ye of Sinautec.

The biggest advantage of ultracapacitors is that they can fully recharge in less than a minute, unlike lithium-ion batteries which can take several hours. The downside of ultracapacitors is that they currently have a very short range, providing a distance of only a few miles, due to the fact that ultracapacitors can store only about 5% of the energy that lithium-ion batteries can hold.

Although their short range makes ultracapacitors impractical for cars, city buses have to stop frequently anyway.

The two companies hope that this is just the beginning for ultracapacitor buses. The company that makes the Shanghai buses, Foton America Bus Co, based in Tennessee, plans to deliver another 60 buses to the Chinese city in early 2010. The new buses will have ultracapacitors manufactured by Shanghai Aowei that supply 10-watt hours per kilogram, compared with the current ultracapacitors that have an energy density of six watt-hours per kilogram. Other US cities, including New York City, Chicago, and some towns in Florida, have also expressed interest in trailing the buses.

A cost-effective solution to make city buses cheaper and greener

Ultracapacitors Make City Buses Cheaper, Greener

Buses with ultracapacitors stop at recharging stations, which double as bus stops, to recharge in less than a minute. A fleet of 17 buses near Shanghai has been running on ultracapacitors for the past three years, and in October 2009 that technology came to the Washington, DC, for a one-day demonstration. Chinese company Shanghai Aowei Technology Development Company, along with its US partner Sinautec Automobile Technologies, predict that this approach will provide an inexpensive and energy efficient way to power city buses in the near future.

A bus with ultracapacitors uses 40% less electricity compared to an electric bus with lithium-ion batteries, and requires just one-tenth the energy cost of a typical diesel-fuelled bus, which would save about $200,000 during the life of the vehicle. Plus, the buses are environmentally friendly: "Even if you use the dirtiest coal plant on the planet, it generates a third of the carbon dioxide of diesel when used to charge an ultracapacitor," said Dan Ye of Sinautec.

The biggest advantage of ultracapacitors is that they can fully recharge in less than a minute, unlike lithium-ion batteries which can take several hours. The downside of ultracapacitors is that they currently have a very short range, providing a distance of only a few miles, due to the fact that ultracapacitors can store only about 5% of the energy that lithium-ion batteries can hold.

Although their short range makes ultracapacitors impractical for cars, city buses have to stop frequently anyway.

The two companies hope that this is just the beginning for ultracapacitor buses. The company that makes the Shanghai buses, Foton America Bus Co, based in Tennessee, plans to deliver another 60 buses to the Chinese city in early 2010. The new buses will have ultracapacitors manufactured by Shanghai Aowei that supply 10-watt hours per kilogram, compared with the current ultracapacitors that have an energy density of six watt-hours per kilogram. Other US cities, including New York City, Chicago, and some towns in Florida, have also expressed interest in trailing the buses.