Engineering
Having trouble hearing? Just turn up your shirt. That's the idea behind a new "acoustic fabric" developed by engineers at MIT and collaborators at Rhode Island School of Design.
Mar 16, 2022
2
147
Energy & Green Tech
Seawater's mix of hydrogen, oxygen, sodium and other elements makes it vital to life on Earth. But that same complex chemistry has made it difficult to extract hydrogen gas for clean energy uses.
Apr 11, 2023
0
800
Engineering
In an impressive proof-of-concept demonstration, an interdisciplinary team of scientists has developed a bioelectronic system driven by a machine learning algorithm that can shift the membrane voltage in living cells and ...
Sep 24, 2020
0
718
Energy & Green Tech
Anion exchange membranes (AEMs) are semipermeable fuel cell components that can conduct anions but reject cations and gases. This enables the partition of substances that could chemically react with one another, thus allowing ...
Energy & Green Tech
How do you store renewable energy so it's there when you need it, even when the sun isn't shining or the wind isn't blowing? Giant batteries designed for the electrical grid—called flow batteries, which store electricity ...
Nov 7, 2019
0
396
Energy & Green Tech
The food industry generates enormous amounts of waste and by-products, including from poultry production. Each year, some 40 million metric tons of chicken feathers are incinerated. This not only releases large amounts of ...
Oct 20, 2023
0
64
Engineering
Small changes in membrane design can have a large impact on the performance of a new technology developed at KAUST that uses waste heat from solar cells for seawater desalination.
Aug 3, 2021
0
1395
Engineering
Solar electricity is produced almost entirely by panels, or modules, constructed with light-absorbing cells made from silicon. Silicon is the industry standard because it is reliable and inexpensive, with structure and performance ...
Mar 4, 2022
0
86
Engineering
By now, it's well known that circulating outdoor air in buildings is safer than recirculating indoor air. That point was driven home by the pandemic. Problem is, it's just not cost-effective.
Jun 17, 2021
0
26
Energy & Green Tech
Nanodiamonds may be tiny, but they can help with one of the biggest problems facing humanity today: climate change.
Dec 16, 2021
0
130
A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving force. Some components are allowed passage by the membrane into a permeate stream, whereas others are retained by it and accumulate in the retentate stream.
Membranes can be of various thickness, with homogeneous or heterogeneous structure. Membrane can also be classified according to their pore diameter. According to IUPAC, there are three different types of pore size classifications: microporous (dp < 2nm), mesoporous (2nm < dp < 50nm) and macroporous (dp > 50nm). Membranes can be neutral or charged, and particles transport can be active or passive. The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process. Membranes can be generally classified into three groups: inorganic, polymeric or biological membranes. These three types of membranes differ significantly in their structure and functionality.
This text uses material from Wikipedia, licensed under CC BY-SA
