Chinese LEDs Get 122% More Efficient by Copper Substrate Transplant

Gallium nitride (GaN) light emitting diodes, or commonly known as LEDs are usually grown on a layer of silicon - that abundant material that...

Nano-Sized Solar Cells Inspired by Coaxial Cables Developed by Boston College Researchers

To make thin film solar cells have a higher efficiency than any of the previously experimented models, some Boston College researchers propose using nano-scale solar cells inspired by the working principle of coaxial cables. There's a so-called "thick & thin" issue in making thin solar cells, which states that a solar cell has to be thick enough to collect light in sufficient amounts, and at the same time it needs to be thin enough to extract current from it.

Scientists Turn Hemp Into Cheap Pseudo-Graphene for Supercapacitors

All these stories we hear about the miracle material graphene, and everything it can do especially when it comes to energy storage, somehow miss...
Generator Inside the Nacelle of a Wind Turbine, Could Benefit from Superconductor

High-Performance Superconductors Developed, Oak Ridge National Laboratory

Superconductors typically find their way into power generation and transmission applications, where losses are unacceptable or great amounts of current are needed to flow. When...
All-Electric Buildings

Revolutionary Way to Mainstream Zero-Emission, All-Electric Buildings

Since late 1970s, California has been a leader in building energy efficiency. However, state officials believe that much more can be done to make...

Nanologix turns urine to electricity

Everyone agrees hydrogen is a wonderful fuel to use, whether in fuel cells or normal engines, as the exhaust is pure water. However, there...

New Polymer Synthesis Cuts Plastic Solar Cell Production Time by 50%

Their discovery drastically reduces the reaction time (99% faster). In the past, the reaction that took place in 48 hours, now only lasts 30 minutes and increases the average molecular weight of the polymer by a factor of more than three.

PoWiFi Powers Devices Wirelessly, Eliminates Batteries

PoWiFi is a system that allows simultaneous wireless transfer of power and data to electronic devices using existing WiFi infrastructure, giving a glimpse of...

New Photo-Catalytic Fuel Cell Can Both Clean Wastewater and Produce Electricity

People have so far created many water purifying devices and we always presented them here on The Green Optimistic. Now, Yanbiao Liu and his...

Move Over Giant Hard Drives, Scientists Store 1TB of Data in a Spoon of...

Advances in the field of nanotechnology have managed to completely transform our portable electronic gadgets from what they used to be. The most fascinating part...