Hydrogels change water and solute dynamics

Hydrogels form tiny, water-filled pores with diameters so small that molecular-level studies can be difficult. Moreover, the motion of water molecules and dissolved ions is so fast that they are difficult to follow. Therefore, ...

Polymer power potential

The mantra 'reduce, reuse, recycle' is increasingly pertinent. Every year, vast amounts of energy that could be captured and reused are lost through waste heat. Now, A*STAR scientists have demonstrated, through theoretical ...

How molecules interact with a laser field

When molecules interact with the oscillating field of a laser, an instantaneous, time-dependent dipole is induced. This very general effect underlies diverse physical phenomena such as optical tweezers, for which Arthur Ashkin ...

Scientists develop novel method to monitor molecular aggregation

Chiral molecules are defined as molecules that are non-superimposable on their mirror images, much like that of left and right human hand bone structure. There are many examples of chiral molecules in nature, including proteins ...

Atomic-scale capillaries block smallest ions, thanks to graphene

Researchers at The University of Manchester's National Graphene Institute in the UK have succeeded in making artificial channels just one atom in size for the first time. The new capillaries, which are very much like natural ...

A boundary dance of amyloid-β stepping into dementia

Alzheimer's disease is caused by aggregates of amyloid-β (Aβ) peptides. This aggregation is accelerated at the cell membrane surface. Using molecular dynamics simulations and NMR experiments, the research group at ExCELLS ...

A new way to see stress—using supercomputers

It's easy to take a lot for granted. Scientists do this when they study stress, the force per unit area on an object. Scientists handle stress mathematically by assuming it to have symmetry. That means the components of stress ...

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