nanotechnology tagged posts

Nanoscale Building Blocks and DNA ‘Glue’ Help Shape 3D Architectures

 

Nanoparticles in the shape of cubes, octahedrons, and spheres coordinate with each other to build structures. The shapes are bound together by complementary DNA molecules on each type of particle. The structures of the resulting 3D crystals are determined by the spatial symmetry of the facets of the cubes and octahedrons, while their structural order depends on DNA-tuned interactions and the ratio of the nanoparticles’ sizes.

APPS: Directional binding for self-assembling materials made of different types of nanoparticles opens up opportunities to design unique materials that could benefit high-density energy storage devices and catalysis, among other applications.

The organization of spherical particles into lattices is typically driven by packing considerations...

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Engineering the World’s Smallest Nanocrystal with 19 atoms

Proteins use biomineralization to incorporate metallic elements into tissues, using it to create diverse materials such as seashells, teeth, and bones. However, the way proteins actually do this is not well understood.

Now RIKEN CLST & Yokohama City U scientists have used an artificially designed protein to create a cadmium chloride nanocrystal – the smallest crystal reported so far, made up of just 19 atoms – sandwiched b/n 2 copies of the protein.

In 2014, the groups announced development of an artificial protein, called Pizza6, which looks a lot like a pizza cut into 6 identical slices...

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