Saturday, 27 September 2025

New kind of polyethylene: Durable and yet degradable

Added: 08.11.2021 22:23 | 259 views | 0 comments

Polyethylene is the most abundantly manufactured plastic in the world. Due to properties like durability, it has many diverse, and even long-term uses. Chemists have now incorporated polar groups in the material's molecular chains in order to expand its properties and simultaneously reduce the problematical persistence of plastic in the environment. The desired favorable properties of polyethylene remain unchanged.

Source: feeds.sciencedaily.com

Stacking the deck: Layers of crystalline nanosheets enable tunable electronic properties

Added: 08.11.2021 22:23 | 220 views | 0 comments

Researchers have obtained and characterized two-dimensional (2D) boron monosulfide (BS) nanosheets. The bandgap energy of a single BS nanosheet was greater than that of the bulk material from which it came. As additional 2D layers were stacked, the bandgap energy eventually decreased to that of the bulk material. This result reflected the tunable electronic properties of BS nanosheets, which are suitable for electronic devices and photocatalytic applications.

Source: feeds.sciencedaily.com

Plant from plastics: Bio-based polymers can be transformed into fertilizer

Added: 08.11.2021 22:23 | 229 views | 0 comments

Bioplastics can be chemically recycled into nitrogen-rich fertilizers in a facile and environmentally friendly way, as recently demonstrated. Their findings pave the way towards sustainable circular systems that simultaneously address issues such as plastic pollution, petrochemical resource depletion, and world hunger.

Tags: Chemicals

Source: feeds.sciencedaily.com

Tuneable catalysis: Solving the particle size puzzle

Added: 08.11.2021 22:23 | 221 views | 0 comments

Chemical reactions can be studied at different levels: At the level of individual atoms and molecules, new compounds can be designed. At the level of tiny particles on the nano and micrometer scale, one can understand how catalyst materials influence chemical reactions. Now it is possible to connect all levels from the microscopic to the macroscopic level in order to describe a technologically important chemical reaction under realistic conditions.

Tags: Chemicals

Source: feeds.sciencedaily.com

Making Martian rocket biofuel on Mars

Added: 08.11.2021 22:23 | 218 views | 0 comments

Researchers have developed a concept that would make Martian rocket fuel, on Mars, that could be used to launch future astronauts back to Earth.

Tags: Fuel , Mars

Source: feeds.sciencedaily.com

Smart material switches between heating and cooling in minutes

Added: 08.11.2021 22:23 | 235 views | 0 comments

Engineers have developed smart material technology that, with the flip of a switch, can alternate between harvesting heat from sunlight and allowing an object to cool. The window-like device has no moving parts and could be a boon for HVAC savings, potentially cutting energy usage by nearly 20% in the United States alone.

Tags: Technology , Tim Cook , United States

Source: feeds.sciencedaily.com

Carbon nanotube-based sensor can detect SARS-CoV-2 proteins

Added: 08.11.2021 22:23 | 234 views | 0 comments

Using specialized carbon nanotubes, engineers designed a sensor that can detect SARS-CoV-2 without any antibody, giving a result within minutes. With further development, this kind of sensor could enable rapid and accurate screening for COVID-19 or pathogens that emerge in the future.

Tags: Rape

Source: feeds.sciencedaily.com

Metal-halide perovskite semiconductors can compete with silicon counterparts for solar cells, LEDs

Added: 08.11.2021 22:23 | 206 views | 0 comments

Common semiconductor materials for solar cells, such as silicon, must be grown via an expensive process to avoid defects within their crystal structure that affect functionality. But metal-halide perovskite semiconductors are emerging as a cheaper, alternative material class, with excellent and tunable functionality as well as easy processability.

Source: feeds.sciencedaily.com

Urban areas across the US are undercounting greenhouse gas emissions

Added: 08.11.2021 22:23 | 231 views | 0 comments

Methane emissions from the distribution and use of natural gas across U.S. cities are 2 to 10 times higher than recent estimates from the Environmental Protect Agency, according to a new study. In Boston, methane emissions from the natural gas system are six times higher than recent estimates by the Massachusetts DEP and have not significantly changed in eight years, despite legislation aimed at repairing leaks in natural gas pipelines.

Tags: Natural Gas

Source: feeds.sciencedaily.com

A big leap forward in using iron catalysts for pharmaceuticals

Added: 08.11.2021 22:23 | 232 views | 0 comments

Researchers have created and characterized a novel, three-component cross-coupling reaction that is a 'tremendous leap forward' in developing effective and practical iron-based reactions that could be used to create pharmaceuticals. Unlike palladium, the transition metal catalyst most often used in industry and academic labs, iron is abundant, cheap and relatively nontoxic.

Tags: Cher

Source: feeds.sciencedaily.com

Stretchy, bendy, flexible LEDs

Added: 08.11.2021 22:23 | 228 views | 0 comments

Engineers have developed a way to print stretchy LEDs on unconventional surfaces using an inkjet printer.

Tags: LEDs

Source: feeds.sciencedaily.com

Nature-inspired coatings could power tiny chemistry labs for medical testing and more

Added: 08.11.2021 22:23 | 225 views | 0 comments

Researchers develop polymer coating that enables low surface tension liquids to be transported over distances 15 times longer than currently possible, without losing any of the liquid.

Tags: Lost

Source: feeds.sciencedaily.com

Chemists develop a fundamentally new mode of adsorption

Added: 08.11.2021 22:23 | 239 views | 0 comments

A research team has made a breakthrough in surface science by introducing a new active mechanism of adsorption. Such adsorption-based phenomena, in which molecules are attracted onto a solid surface, are essential for today's catalysts, energy storage and environmental remediation. The research demonstrates how artificial molecular machines grafted on surfaces can be used to recruit molecules actively onto these surfaces at very high concentrations, thereby storing significant amounts of energy.

Source: feeds.sciencedaily.com

New material could pave the way for better, safer batteries

Added: 08.11.2021 22:23 | 226 views | 0 comments

A material derived from trees could potentially replace liquid electrolytes in next-generation batteries.

Source: feeds.sciencedaily.com

How pearls achieve nanoscale precision

Added: 08.11.2021 22:23 | 226 views | 0 comments

In research that could inform future high-performance nanomaterials, a study has uncovered how mollusks build ultradurable structures with a level of symmetry that outstrips everything else in the natural world, with the exception of individual atoms.

Source: feeds.sciencedaily.com

Novel peroxide-based material emits fluorescence in response to stress

Added: 08.11.2021 22:23 | 222 views | 0 comments

A new organic peroxide molecule, BMPF releases fluorescence under mechanical stress and could be incorporated into polymer networks for mechanofunctional design. BMPF-linked polymers are also stable at relatively high temperatures and could pave the way for highly selective and efficient small-molecule-releasing systems with applications in imaging and drug delivery.

Tags: Networks , Temperatures

Source: feeds.sciencedaily.com

Tap water produces a protective shield against microplastics

Added: 08.11.2021 22:23 | 231 views | 0 comments

Tap water produces a natural protective shield against harmful microplastics, which can help prevent household products such as plastic kettles from releasing them.

Source: feeds.sciencedaily.com

Space between polymer chains affects energy conversion

Added: 08.11.2021 22:23 | 226 views | 0 comments

Researchers have new insight into molecules that change their shape in response to light. The researchers studying azobenzene-based polymers found that their free volume -- a measure of the space between polymer chains -- was strongly linked with the polymers' ability to convert visible light radiation into mechanical energy.

Source: feeds.sciencedaily.com

Controllable nanoscale gas-liquid interface fabricated

Added: 08.11.2021 22:23 | 242 views | 0 comments

When liquid meets gas, a unique zone forms. Variable by nature, molecules can cross from one state to another, combining in unique ways to either desirable or unwanted ends. From heat escaping a mug of coffee to increasing molecular concentrations in chemical solutions, gas-liquid interfaces are ubiquitous across nature and engineering. But a lack of tools capable of precisely controlling such gas-liquid interfaces limit their applications -- until now.

Tags: Chemicals , NATO

Source: feeds.sciencedaily.com

Scientists develop new sensor to capture calcium activity in cells

Added: 08.11.2021 22:23 | 225 views | 0 comments

Researchers have developed a novel approach for detecting the activity of calcium within cells. The study demonstrates the effectiveness of a red biosensor that can directly monitor calcium at specific locations within a cell, a discovery that could aid in better understanding of the molecular basis of human diseases.

Tags: Scientists

Source: feeds.sciencedaily.com

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