Keeping Bugs Away from Food
Watching out for vultures
Got Milk? How?
Tree Frogs
Frogs and Toads
Salamanders and Newts
Young Ants in the Kitchen
Bee Disease
Jay Watch
Homework blues
The Colorful World of Synesthesia
The case of the headless ant
Chemistry and Materials
Screaming for Ice Cream
Spinning Clay into Cotton
Lighting goes digital
The Earth-bound asteroid scientists saw coming
Galaxies far, far, far away
Games with a Purpose
Dinosaurs and Fossils
Fossil Fly from Antarctica
Meet the new dinos
Dinosaurs Grow Up
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Quick Quake Alerts
Sky Dust Keeps Falling on Your Head
Groundwater and the Water Cycle
Snow Traps
Will Climate Change Depose Monarchs?
Plastic Meals for Seals
Finding the Past
Digging Up Stone Age Art
Ancient Cave Behavior
Untangling Human Origins
Food and Nutrition
In Search of the Perfect French Fry
The mercury in that tuna
Eat Out, Eat Smart
GSAT English Rules
Whoever vs. Whomever
Capitalization Rules
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
GSAT Scholarship
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
How a Venus Flytrap Snaps Shut
Math and our number sense:
Setting a Prime Number Record
Human Body
Spitting Up Blobs to Get Around
Flu Patrol
Smiles Turn Away Colds
African Wild Dog
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
Children and Media
One ring around them all
Einstein's Skateboard
The Particle Zoo
Stalking Plants by Scent
Tracking the Sun Improves Plant Pollen
City Trees Beat Country Trees
Gila Monsters
Space and Astronomy
Pluto, plutoid: What's in a name?
A Moon's Icy Spray
Zooming In on the Wild Sun
Technology and Engineering
Musclebots Take Some Steps
Smart Windows
Machine Copy
The Parts of Speech
Countable and Uncountable Nouns
What is a Preposition?
Middle school science adventures
How to Fly Like a Bat
Revving Up Green Machines
Watering the Air
A Dire Shortage of Water
Either Martians or Mars has gas
Add your Article

Spinach Power for Solar Cells

Popeye uses spinach to power his muscles. Now, scientists are looking to spinach as a power source for supplying electricity. A solar cell converts sunlight into electricity. Most solar cells on the market today are made of a material called silicon. The new device, on the other hand, uses proteins from spinach and from a bacterium named Rhodobacter sphaeroides. To make the solar cell, a team of biologists and chemists from the Massachusetts Institute of Technology extracted certain light-sensitive proteins from spinach and bacteria. They put about 2 billion of these proteins on a piece of glass, making the proteins stick by embedding them in a special framework that looks and acts like a cell membrane. The researchers then put the layer of proteins between layers of other materials called semiconductors, which carry electricity. When the scientists shone certain types of light on the device, the proteins absorbed the light and sent electrons through the semiconductor to an electrode. This activity caused an electric current to flow. At this early stage in the research, the spinach cell isn't efficient enough to be useful. To improve their solar cell, the researchers want to jam more proteins into a single device. They also want such solar cells to stay active for a long time. One hope is that protein-based solar cells could repair themselves, just like living plants replace their own proteins over time. If it all works out, there may be a new way to harvest the sun's energy. Instead of having to eat your spinach, you might find that the leafy green could someday power your TV set.E. Sohn

Spinach Power for Solar Cells
Spinach Power for Solar Cells

Designed and Powered by™