STS 2

Nanotechnology

is defined as the study and use of structures between 1 nanometer and 100 nanometer in size. These include the design, production, characterization and application of structures, devices and controlling shape and size in nanometer scale.

1-100

Nanotechnology is defined as the study and use of structures between ____ nanometer and _____ nanometer in size. These include the design, production, characterization and application of structures, devices and controlling shape and size in nanometer scale.

Nanoscience

is the study of phenomena and manipulation of materials at atomic, molecular and macromolecular scale.

Nanoscaled particles

have larger surface area per unit mass, which increases their mechanical modulus, physical and chemical properties.

Zhang, Asmatulu, et. al (2011)

pointed out these improved properties why some countries spend for nanotechnology research

Steel embedded with nanoscaled copper

Paints with titanium dioxide (TiO2) nanoparticles become water-repellent, scratch resistant and crack resistant.

carbon nanoparticles - Stain-proof, waterproof and anti-bacterial textiles

current uses of nanotechnology

“nanobots” in medicine

Increase lifespan through cellular repair and reversal of the aging process.

Enable us to travel faster and farther because of lighter, more efficient materials

Future predicted uses of Nanotechnology

Alhoff and Lin (2007)

Lower energy consumption due to increased weight efficiency

Environmental monitoring and protection

Biological applications

Less waste on raw materials

Benefits of Nanotechnology

Invasion of Privacy

The ethics of human-enhancing technology

Immortality issue

Environmental issue regarding biodegradable nanoparticles

The humanitarianism issues.

Nano ethics: Ethical and Social Implications of Nanotechnology

Invasion of Privacy

If nanotechnology aims to shrink down devices, it would be then possible to construct surveillance devices that are invisible and undetectable.

The ethics of human-enhancing technology

Cybernetic parts of exoskeletons that give superhuman strength or infrared vision raises further ethical problems related to biotechnology and cognitive sciences.

Immortality issue

If nanoparticles were proposed to do cellular repair, and lead to reversal of aging, it would mean humans would live longer than expected.

Environmental issue regarding biodegradable nanoparticles

Will all nanoparticle-reinforced materials decompose over time? Will there be no contamination or pollution that will occur in the environment due to their presence?

The humanitarianism issues.

Will nanotechnology help in reducing poverty, hunger, produce clean water and clean energy?