Polymer brushes are polymers grown on surfaces, and are attractive for use in lubrication and anti-fouling applications. Researchers varied the length of the chain separating negatively and positively charged functional groups in polymer brushes to investigate how chain length affected the interaction of the polymer brushes with water. They found that the chain length influenced the ionic strength sensitivity for the hydration of the polymer brushes in water but not their water uptake or hydration structure.
Detecting food and cosmetic spoilage and contamination. Identifying new medicinal plants in a remote jungle. Authenticating tea and wine. Scientists have developed a low-cost, portable, paper-based sensor that can potentially carry out all of these functions with easy-to-read results.
Molten lava, volcanic ash, modern grime, salt, humidity. The ancient painting of a Roman woman has been through it all, and it looks like it. Scientists now report that a new type of high-resolution X-ray technology is helping them discover just how stunning the original portrait once was, element-by-element, which could help them restore the painting.
Coral reefs can't seem to catch a break. Not only are rising temperatures wreaking havoc with their environment, but emerging evidence suggests that a certain sunblock component is a coral killer. Now, researchers have developed a biodegradable bead that can soak up the sunblock ingredient, oxybenzone, like a thirsty sea sponge.
Researchers improve perovskite-based technology in the entire energy cycle, from solar cells harnessing power to LED diodes to light the screens of future electronic devices and other lighting applications.
Researchers have discovered a new reaction mechanism that could be used to improve catalyst designs for pollution control systems to further reduce emissions of smog-causing nitrogen oxides in diesel exhaust.
Have your coffee without spilling the milk: researchers have developed a milk capsule that dissolves when placed in a hot drink. Not only does this reduce the consumption of packaging material, the capsules are easier to use than conventional plastic containers.
Researchers show that lake sediments preserved within ancient supervolcanoes can host large lithium-rich clay deposits. A domestic source of lithium would help meet the rising demand for this valuable metal, which is critical for modern technology.
As graphene's popularity grows as an advanced 'wonder' material, the speed and quality at which it can be manufactured will be paramount. With that in mind, the research group has developed a cleaner and more environmentally friendly method to isolate graphene using carbon dioxide in the form of carbonic acid as the electrolyte solution.
A compound called lithium iodide (LiI) has been considered a leading material for lithium-air batteries, which could deliver more energy per pound compared to today's leading batteries. A new study helps explain previous, conflicting findings about the material's usefulness for this task.
A flick of a switch, and electrochromic films change their colors. Now they can be applied more safely and more commonly thanks to an innovative chemical process that makes them water soluble. They can be sprayed and printed, instead of being confined behind safety implements to handle volatile solvents and their toxic fumes.
With their remarkable electrical and optical properties, along with biocompatibility, photostability and chemical stability, gold nanoclusters are gaining a foothold in a number of research areas, particularly in biosensing and biolabeling. An international research team has now shown that the fluorescence is an intrinsic property of the gold nanoparticles themselves. The researchers used Au20, gold nanoparticles with a tetrahedral structure.
Supercapacitors promise recharging of phones and other devices in seconds and minutes as opposed to hours for batteries. But current technologies are not usually flexible, have insufficient capacities, and for many their performance quickly degrades with charging cycles. Researchers have found a way to improve all three problems in one stroke.
Give your medicine a jolt. By using -- electrochemistry -- a technique that combines electricity and chemistry, future pharmaceuticals -- including many of the top prescribed medications in the United States -- soon may be easily scaled up to be manufactured in a more sustainable way.
Researchers have found a solution for one of the biggest stumbling blocks preventing zinc-air batteries from overtaking conventional lithium-ion batteries as the power source of choice in electronic devices.