Medical research

New effort to find why replacement hips and knees go bad

A Case Western Reserve University chemistry professor has begun imbedding magnetic nanoparticles in the toughest of plastics to understand why more than 40,000 Americans must replace their knee and hip replacements annually.

Medical research

Restoring blood flow

Tissue deprived of oxygen (ischemia) is a serious health condition that can lead to damaged heart tissue following a heart attack and, in the case of peripheral arterial disease in limbs, amputation, particularly in diabetic ...

Medical research

Developing human organs and body parts in the lab

Tissue engineering is making a huge impact in the world of science with artificial scaffold structures, in which new cells are encouraged to grow. This means that the nanostructure of tissues in the body can be mimicked, ...

Nanostructure

A nanostructure is an object of intermediate size between molecular and microscopic (micrometer-sized) structures.

In describing nanostructures it is necessary to differentiate between the number of dimensions on the nanoscale. Nanotextured surfaces have one dimension on the nanoscale, i.e., only the thickness of the surface of an object is between 0.1 and 100 nm. Nanotubes have two dimensions on the nanoscale, i.e., the diameter of the tube is between 0.1 and 100 nm; its length could be much greater. Finally, spherical nanoparticles have three dimensions on the nanoscale, i.e., the particle is between 0.1 and 100 nm in each spatial dimension. The terms nanoparticles and ultrafine particles (UFP) often are used synonymously although UFP can reach into the micrometre range.

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