Nano-fingerprints: Combating Counterfeits
Tiny Tech
by Tiny Tech Radio Series
5M ago
Episode 047 How do you prove that you are you? One way is to take advantage of the fact that your fingerprints make a pattern that is uniquely yours. But how do we prove that the things around us ? from dollar bills to documents to pharmaceuticals ? are genuine and not counterfeits ..read more
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Slick as a Whistle
Tiny Tech
by Tiny Tech Radio Series
7M ago
Episode 046 Spray-on windshield coatings that repel rain are really slick: they consist of a thin film of silicone, the same rubbery material used as caulking around the home. Silicones are hydrophobic, which means that they repel water, but some materials repel water so strongly that they are called superhydrophobic ..read more
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Carbon Quantum Dots
Tiny Tech
by Tiny Tech Radio Series
7M ago
Episode 045 In nanotechnology, the big ideas involve really small things, such as quantum dots. Quantum dots are very small chunks of matter that can be tuned to absorb or emit light of different colors simply by changing the size of the dot ..read more
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Beer and Magnetic BioBots
Tiny Tech
by Tiny Tech Radio Series
8M ago
Episode 044 Making beer by fermentation of barley and hops has been around for centuries. But could nanotechnology improve the process? Recently, to help with making beer, scientists have developed nanostructures called BioBots ..read more
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Environmental Cleanup with Metal-Organic Frameworks
Tiny Tech
by Tiny Tech Radio Series
1y ago
Episode 041 Cleaning up environmental pollutants is a big problem that needs "out of the box" answers. Recently, scientists have been investigating a new kind of material called a metal-organic framework or MOF for water purification ..read more
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Seeing through Liquids with an Electron Microscope
Tiny Tech
by Tiny Tech Radio Series
2y ago
Episode 040 When scientists take pictures or movies of atom-sized objects, they often use a T.E.M. ? a type of electron microscope that transmits an electron beam through the sample. At first, however, only solids could have their picture taken, because liquids tend to evaporate into the vacuum that the electron beam needs to travel through ..read more
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A Suit of Alloy
Tiny Tech
by Tiny Tech Radio Series
2y ago
Episode 039 If you enjoy comics or superhero movies, you?ve probably heard of someone who?s just a ?genius, billionaire, playboy, philanthropist? when you take away his metal suit. But our superhero admitted that he liked the name ?iron man,? even though the fictional suit was actually made of gold-titanium alloy ..read more
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ITO or Graphene
Tiny Tech
by Tiny Tech Radio Series
2y ago
Episode 038 Cell phones and other mobile electronic devices are everywhere. Manufacturing them in large numbers, however, depends on the availability of rare elements that increasingly are in short supply. For example, the light emitting material in display screens must be situated between two layers of electrodes, and one of these electrodes must be transparent ..read more
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Wood Lights
Tiny Tech
by Tiny Tech Radio Series
2y ago
Episode 037 You can light fires with wood, but how about wood that emits light without burning? Scientists from New Zealand recently took thin sheets of balsa wood and extracted them with a solvent to dissolve away some of the more soluble components. They then filled the holes in the resulting porous, spongy solid with nano-sized luminescent quantum dots ..read more
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An Artificial Leaf?
Tiny Tech
by Tiny Tech Radio Series
3y ago
Episode 036 To satisfy our future need for energy, it will be increasingly important to use renewable energy sources, such as sunlight. Plants have been using sunlight as an energy source for millions of years. In a process called photosynthesis, plants use the sun’s energy to make cellulose and other chemicals they need ..read more
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