Laden...
ScienceDaily: Matter & Energy News |
| Posted: 08 Sep 2021 03:04 PM PDT Protons in aqueous solution can usually migrate very quickly -- much faster compared to other ions. However, this only applies when they are in a space greater than two nanometers, as a new study shows. In confined spaces the so-called Grotthuss mechanism no longer works, in which protons diffuse faster than ions. |
| Stretching the capacity of flexible energy storage Posted: 08 Sep 2021 05:40 AM PDT Some electronics can bend, twist and stretch in wearable displays, biomedical applications and soft robots. While these devices' circuits have become increasingly pliable, the batteries and supercapacitors that power them are still rigid. Now, researchersreport a flexible supercapacitor with electrodes made of wrinkled titanium carbide -- a type of MXene nanomaterial -- that maintained its ability to store and release electronic charges after repetitive stretching. |
| High-energy shape memory polymer could someday help robots flex their muscles Posted: 08 Sep 2021 05:15 AM PDT When stretched or deformed, shape memory polymers return to their original shapes after heat or light is applied. These materials show great promise for soft robotics, smart biomedical devices and deployable space structures, but until now they haven't been able to store enough energy. Now, researchers have developed a shape memory polymer that stores almost six times more energy than previous versions. |
| Safeguarding clean water for spaceflight missions Posted: 07 Sep 2021 02:53 PM PDT In a first study of its kind, scientists characterized different bacterial populations isolated over time from potable (drinking) water from the International Space Station (ISS). |
| Scientists unravel the mysteries of irreversibility in electrochromic thin films Posted: 07 Sep 2021 02:53 PM PDT Tungsten oxide, an electrochromic (EC) material with immense potential for technical applications such as in smart windows, has attracted much interest for its energy-saving qualities. However, after multiple cycles, such EC devices exhibit degradation in optical modulation and reversibility owing to lithium-ion trapping. Now, scientists have adopted a quantitative approach to understand the irreversibility of lithium intercalated tungsten oxide films, laying the groundwork for developing superior electrochromic materials and devices. |
| Walking with coffee is a little-understood feat of physics Posted: 07 Sep 2021 02:53 PM PDT A new article expands on the coffee-cup-holding paradigm to examine how humans manipulate a complex object. The research has the potential to revolutionize design of smart prosthetics and will have an impact on manufacturing and animation. |
| Scientists grow miniature brains that mimic the major pathological features of Parkinson’s disease Posted: 07 Sep 2021 01:07 PM PDT Recreating major pathological features of Parkinson's disease in a lab-grown, human mini-brain will help researchers to explore new treatments. This is the first time that Lewy bodies, a hallmark of Parkinson's disease in patients' brains, have been produced in the laboratory, offering new insights into the disease. |
| Scientists develop films with tunable elongation and fracture for various uses Posted: 07 Sep 2021 01:06 PM PDT Elastic polymers, or 'elastomers,' have various applications, including in car tires and shock absorbers, and their properties are governed by the density of cross-linked polymer chains. However, these properties are usually not modifiable, leading to excessive synthesis requirements. Now, scientists have come up with a novel elastomer film whose elasticity can be 'tuned' in a post-preparation manner, enabling unique elongation and fracture properties, and opening doors to flexible displays and soft robotics. |
| Under loading ceramics self-heal cracks by forming kink-bands Posted: 07 Sep 2021 01:06 PM PDT Ceramics are resilient to heat and extreme environments but they are fragile and crack easily. Researchers have discovered a self-healing mechanism within a type of ceramics, called MAX phases. They have shown that these engineered ceramics form natural faults or kink-bands during loading that can not only effectively stop cracks from growing, but can also close and heal them, thereby preventing catastrophic failure. |
| Water-repellent nanomaterial inspired by nature Posted: 07 Sep 2021 01:06 PM PDT Researchers have created a new nanomaterial that repels water and can stay dry even when submerged underwater. The discovery could open the door to the development of more efficient water-repellent surfaces, fuel cells and electronic sensors to detect toxins. |
| New filtering method promises safer drinking water, improved industrial production Posted: 06 Sep 2021 12:14 PM PDT Researchers create thin film polymer membranes capable of separating fluoride from chloride and other ions. Targeted ion selectivity by the filtering membranes could have important implications for water purification, environmental remediation and industrial production. |
| You are subscribed to email updates from Matter & Energy News -- ScienceDaily. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
Laden...
Laden...
© 2024
