applications are equally diverse, ranging from
extensions of conventional device physics
to completely new approaches based upon
molecular self-assembly, from developing new
materials with dimensions on the nanoscale to
direct control of matter on the atomic scale.
Scientists currently debate the future
implications of nanotechnology.
Nanotechnology may be able to create many
new materials and devices with a vast range
of applications, such as in nanomedicine,
nano-electronics, biomaterials energy
production, and consumer products. On the
other hand, nanotechnology raises many
of the same issues as any new technology,
including concerns about the toxicity and
environmental impact of nanomaterials, and
their potential effects on global economics,
as well as speculation about various
doomsday scenarios. These concerns have
led to a debate among advocacy groups and
governments on whether special regulation of
nanotechnology is justified.
AgriKultuur |AgriCulture
The Application of Nanotechnology in
Aquaculture:
Application of microbubble generators
to aquaculture was studied in the 1980s
because various farms including shellfish
culture and fish culture suffered from
shortage of oxygen supply due to high-density
culturing. Prof Hirofumi Ohnari, Tokuyama
College of Technology in Japan, invented
a microbubble generator and used it to
control DO levels of the water in an oyster
farm in Hiroshima Bay, in Seto Inland Sea.
His original microbubble generator adopts
a nozzle that creates a “Rotational Flow of
the water” in the nozzle, using a water pump
and produces microbubbles, breaking the air
leading to the centre of the rotational flow of
the water. He demonstrated that the addition
of microbubbles is very effective to add
oxygen to the water of the oyster farm, and
this technology drew the attention of many
researchers, and various types of microbubble
generators have been invented in the last
decade in Japan.
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