Video: How to grow a glowing flower—the chemistry of fluorescence
If you have ever seen objects "glow" under a black light, you're familiar with fluorescence. But have you ever wondered why some materials fluoresce while others don't?
If you have ever seen objects "glow" under a black light, you're familiar with fluorescence. But have you ever wondered why some materials fluoresce while others don't?
Other
Jul 12, 2016
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(Phys.org)—Researchers at Japan's National Institute of Advanced Industrial Science and Technology, (AIRT) have developed an organic material that can be liquefied or hardened by shining different types of light on it. ...
We want our electrical devices to have bright screens with low energy needs, so they can be used for a long time before recharge is required. Scientists are increasing the intensity of light by making nanometer scale patterns ...
Nanophysics
Jul 18, 2011
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If pathogens enter into our water supply network many people may fall ill quickly. To protect us against this biological threat, researchers have developed a detection system partly based on nanotechnology that can warn authorities ...
Analytical Chemistry
May 9, 2011
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Dear EarthTalk: What is "nanotechnology"? I've heard that nanoparticles are already in consumer products, yet we haven't really studied their potential health impacts. (Dan Zeff, San Francisco)
Bio & Medicine
May 25, 2009
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Nanotechnology (sometimes shortened to "nanotech") is the study of manipulating matter on an atomic and molecular scale. Generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension sized from 1 to 100 nanometres. Quantum mechanical effects are important at this quantum-realm scale.
Nanotechnology is very 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 investigating whether we can directly control matter on the atomic scale. Nanotechnology entails the application of fields of science as diverse as surface science, organic chemistry, molecular biology, semiconductor physics, microfabrication, etc.
There is much debate on 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 medicine, electronics, biomaterials and energy production. 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 warranted.
This text uses material from Wikipedia, licensed under CC BY-SA