Related topics: clinical trials

Dehydrating plant proteins at the speed of sound

Almost everyone is familiar with ultrasound—the high-frequency sound waves that bounce around in the body creating echo patterns that allow expectant parents to view their babies in the womb or clinicians to capture images ...

Probing microscopic wiggles in squishy materials

The term "colloidal gel" may not be a household phrase, but examples of these materials are everywhere in our daily lives, from toothpaste and shower gel to mayonnaise and yogurt. Colloidal gels are mixtures of particles ...

Biomimetic hydrogel with photodynamic antimicrobial effect

Infections are a dreaded threat that can have fatal consequences after an operation, in the treatment of wounds, and during tissue engineering. Biomimetic hydrogels with "built-in" antimicrobial properties can significantly ...

Researchers add order to polymer gels

Gel-like materials have a wide range of applications, especially in chemistry and medicine. However, their usefulness is sometimes limited by their inherent random and disordered nature. Researchers from the University of ...

Electronic signal expands material by a factor of 100

Researchers at the Laboratory of Organic Electronics, Linkoping University, have discovered a material that can both increase and reduce its volume when exposed to a weak electrical pulse. In a sponge, or filter, the researchers ...

New 3-D printing technique for biomaterials

A new way of 3-D printing soft materials such as gels and collagens offers a major step forward in the manufacture of artificial medical implants.

Researchers develop a gel-like fluid to prevent wildfires

A preventive treatment developed by Stanford researchers could greatly reduce the incidence and severity of wildfires. The approach, outlined Sept. 30 in Proceedings of the National Academy of Sciences, involves an environmentally ...

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Gel

A gel (from the lat. gelu—freezing, cold, ice or gelatus—frozen, immobile) is a solid, jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady-state. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinks within the fluid that give a gel its structure (hardness) and contribute to stickiness (tack). In this way gels are a dispersion of molecules of a liquid within a solid in which the solid is the continuous phase and the liquid is the discontinuous phase.

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