Scientists propose quantum wells as high-power, easy-to-make energy harvesters
Quantum biology: Algae evolved to switch quantum coherence on and off
A UNSW Australia-led team of researchers has discovered how algae that survive in very low levels of light are able to switch on and off a weird quantum phenomenon that occurs during photosynthesis.
How to make a "perfect" solar absorber
The key to creating a material that would be ideal for converting solar energy to heat is tuning the material's spectrum of absorption just right: It should absorb virtually all wavelengths of light that ...
Ancient effect harnessed to produce electricity from waste heat
A phenomenon first observed by an ancient Greek philosopher 2,300 years ago has become the basis for a new device designed to harvest the enormous amounts of energy wasted as heat each year to produce electricity. ...
Quick jolt of energy could improve energy harvesting by a factor of 40
Hybrid energy harvester generates electricity from vibrations and sunlight
Researchers demonstrate new technique for generating electricity
Research scientists at VTT Technical Research Centre of Finland have demonstrated a new technique for generating electrical energy. The new method can be used in harvesting energy from mechanical vibrations ...
Why is the harvest moon so big and orange?
Ever wonder why the moon sometimes looks so big and orange? Professor Emeritus John Percy of the Department of Astronomy and Astrophysics explains the mystery behind the harvest moon:
Porphyrin Dimers Increase Efficiency of Dye-Sensitized Solar Cells
Climate flux matched Europe's social rise and fall
Ancient tree rings show links between climate change and major events in human history, like migrations, plagues and the rise and fall of empires, said a study this week in the journal Science.
Flexible plastics that turn mechanical vibrations into electrical energy
The shrinking dimensions and decreased power consumption of modern electronic gadgets have created opportunities for energy harvesting processes that tap into free, green energy from the environment. Vibration ...
Social amoebae travel with a posse, have amazingly complicated social lives
In 2011, Nature announced that scientists had discovered a single-celled organism that is a primitive farmer. The organism, a social amoeba called Dictyostelium discoideum, picks up edible bacteria, carries them ...
Mechanical motion rectifier leads to better energy harvesting
Micromachined piezoelectric harvester drives fully autonomous wireless sensor
For the first time, a piezoelectric harvesting device fabricated by MEMS technology generates a record of 85μW electrical power from vibrations. A wafer level packaging method was developed for robustness. ...