A Cornell-led collaboration harnessed chemical reactions to make microscale origami machines self-fold—freeing them from the liquids in which they usually function, so they can operate in dry environments and at room temperature.
Materials Science
May 2, 2023
0
167
Using a high-speed "electron camera" at the Department of Energy's SLAC National Accelerator Laboratory and cutting-edge quantum simulations, scientists have directly imaged a photochemical "transition state," a specific ...
Analytical Chemistry
May 26, 2023
0
194
Precursors of the molecules needed for the origin of life may have been generated by chemical reactions promoted by iron-rich particles from meteors or volcanic eruptions on Earth approximately 4.4 billion years ago, according ...
Astrobiology
May 25, 2023
0
59
Designing the next generation of efficient energy conversion devices for powering our electronics and heating our homes requires a detailed understanding of how molecules move and vibrate while undergoing light-induced chemical ...
Analytical Chemistry
May 24, 2023
0
15
A new study published in Geology concludes that an extinct volcano off the shore of Portugal could store as much as 1.2–8.6 gigatons of carbon dioxide, the equivalent of ~24–125 years of the country's industrial emissions.
Earth Sciences
May 23, 2023
0
338
Enzymes are the molecule factories in biological cells. However, which basic molecular building blocks they use to assemble target molecules is often unknown and difficult to measure. An international team including bioinformaticians ...
Cell & Microbiology
May 22, 2023
0
505
Researchers have reported a strategy to disentangle the activity-selectivity tradeoff for direct conversion of syngas, a mixture of carbon monoxide and hydrogen, into desirable ethylene, propylene, and butylene. These hydrocarbons ...
Analytical Chemistry
May 18, 2023
0
101
A team of scientists from the University of Ottawa has developed an innovative technique to manufacture complex chemical structures from easily accessible substrates, making it one of the simplest and most practical methods ...
Analytical Chemistry
May 9, 2023
0
209
Researchers from the University of California, Irvine have developed a DNA enzyme—or DNAzyme—that can distinguish between two RNA strands inside a cell and cut the disease-associated strand while leaving the healthy strand ...
Biotechnology
May 8, 2023
0
1222
One strategy that viruses use to take over a host cell is to mimic small parts of the cell's proteins called motifs. In a new study coordinated from Uppsala University, researchers have used a new method and doubled the available ...
Cell & Microbiology
May 2, 2023
0
54
A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.
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