Related topics: solar cells

A novel cellular process to engulf nano-sized materials

Nanometers are one billionth of a meter, a metric typically used to measure molecules and scientific building blocks not visible to the human eye. Materials of tens and/or several hundred nanometers in diameter have unique ...

Bionic catalysts to produce clean energy

Mixing microbes with carbon nanomaterials could help the transition to renewable energy. KAUST research shows microbes and nanomaterials can be used together to form a biohybrid material that performs well as an electrocatalyst. ...

Tiny light box opens new doors into the nanoworld

Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nano level. Using a tiny box, built from stacked atomically thin material, ...

Single-atom nanozymes

Nanozymes are catalytic nanomaterials with enzyme-like characteristics that have attracted enormous recent research interest. The catalytic nanomaterials offer unique advantages of low cost, high stability, tunable catalytic ...

Scientists discover a new class of single-atom nanozymes

Nanozymes—catalytic nanomaterials with enzyme-like characteristics—offer the advantage of low cost, high stability, tunable catalytic activity and ease of mass production. For these reasons, they have been widely applied ...

No ink needed for these graphene artworks

When you read about electrifying art, "electrifying" isn't usually a verb. But an artist working with a Rice University lab is in fact making artwork that can deliver a jolt.

When a defect might be beneficial

In the quest to design more efficient solar cells and light-emitting diodes (LEDs), a team of engineers has analyzed different types of defects in the semiconductor material that enables such devices to determine if and how ...

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Nanomaterials

Nanomaterials is a field that takes a materials science-based approach to nanotechnology. It studies materials with morphological features on the nanoscale, and especially those that have special properties stemming from their nanoscale dimensions. Nanoscale is usually defined as smaller than a one tenth of a micrometer in at least one dimension, though this term is sometimes also used for materials smaller than one micrometer.

On 18 October 2011, the European Commission adopted the following definition of a nanomaterial:

An important aspect of nanotechnology is the vastly increased ratio of surface area to volume present in many nanoscale materials, which makes possible new quantum mechanical effects. One example is the “quantum size effect” where the electronic properties of solids are altered with great reductions in particle size. This effect does not come into play by going from macro to micro dimensions. However, it becomes pronounced when the nanometer size range is reached. A certain number of physical properties also alter with the change from macroscopic systems. Novel mechanical properties of nanomaterials is a subject of nanomechanics research. Catalytic activities also reveal new behaviour in the interaction with biomaterials.

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