HS-PS2-6
Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.
- Materials Science
Analyze This: This material for 3-D printing is made by microbes
Bacteria with tweaked genes pump out proteins that can be used in a 3-D printer. With microbes in the mix, the living ink can make drugs or suck up chemicals.
- Chemistry
Could reusable ‘jelly ice’ cubes replace regular ice?
These hydrogel “jelly ice cubes” are made mostly of gelatin and water. They won’t melt, even when thawed, and may provide new food cooling options.
- Chemistry
Scientists Say: Silicon
The chemical element silicon is used to make everything from bricks to cookware to electronics.
- Chemistry
This glitter gets its color from plants, not a synthetic plastic
In the new material, tiny arrangements of cellulose reflect light in specific ways to create vibrant hues in an environmentally friendly glitter.
- Chemistry
A new way to make plastics could keep them from littering the seas
Borrowing from genetics, scientists are creating plastics that will degrade. They can even choose how quickly these materials break down.
- Materials Science
Analyze This: Hardened wood can make sharp steak knives
Researchers treated wood to make it hard and dense. Out of it, they carved sharp knives and nails that could substitute for ones made of steel.
- Materials Science
These colorful butterflies were printed with transparent ink
Clear ink creates a whole rainbow of colors when printed in precise, microscopic patterns. This phenomenon is known as structural color.
- Chemistry
Scientists find a ‘greener’ way to make jeans blue
When coated onto jeans, a plant-based polymer reduces water and cuts the amount of toxic chemicals needed.
- Chemistry
Everyday plastics can pollute, leaching thousands of chemicals
Plastic bags and containers leach potentially toxic chemicals into both food and water, but researchers yet don’t know how they might affect health.
- Animals
Bacteria make ‘spider silk’ that’s stronger than steel
Part spider silk, the material is better than what some spiders make. Researchers think it might make the basis for surgical threads or unusually strong fabrics.
- Tech
Synthetic trees could tap underground water in arid areas
They also could also help coastal residents mine fresh water from salty sources.
- Materials Science
Tiny swimming robots may help clean up a microplastics mess
Big problem, tiny solution. Researchers in the Czech Republic have designed swimming robots that can help collect and break down microplastics.
