Related topics: solar cells

Researchers call for better nanowaste management

Waste containing nanomaterials—or nanowaste—is an emerging safety concern worldwide, requiring environmentally sound management and regulation that still need to be established. Researchers at the University of Fribourg ...

Nanomaterial boosts potency of coronavirus disinfectants

The use of peroxide-based disinfectants has grown with the emergence of the COVID-19 pandemic. Yet, the extensive use of chemical disinfectants to kill viruses and other pathogens can also threaten human health and ecosystems.

A 5-minute PCR, faster than self-diagnosis kits

PCR technology is a molecular diagnostics technology that detects target nucleic acids by amplifying the DNA amount. It has brought marked progress in the life sciences field since its development in 1984.

Chemists cook up brand-new kind of nanomaterial

There's a new nanomaterial on the block. University of Oregon chemists have found a way to make carbon-based molecules with a unique structural feature: interlocking rings.

Review of nanomaterials for antiviral coatings

Antiviral coatings based on nanomaterials could help reduce the risk of transmission of infectious diseases, according to new work in the International Journal of Surface Science and Engineering. The Indian team has reviewed ...

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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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