Reactions

Reactions

By American Chemical SocietyNatural Sciences
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Reactions episodes

  • ChemMatters Video Episode 10 - ChemMatters - Graphene: The Next Wonder Material?
    A TV screen as thin and flexible as paper. A cook's pot that flashes a warning if it detects E. coli. Possible treatments for damaged spinal cords. It's not science fiction -- these are all possible applications of a material known as graphene. This so-called "wonder material" is 100 times stronger than steel but thinner than any known solid. And since graphene also conducts electricity as well as copper, it could lead to flexible cell phone touchscreens and transparent, inexpensive solar cells and other devices closer to reality.
    6 min
  • Bytesize Science - Chemiluminescence: How Glow Sticks Work
    Listen up all you ravers out there! Chemiluminescence is at the heart of how glow sticks (as well as fireflies) give off their otherworldly light. When scientists first tried to make their own glowing material in the 1960s, they realized they needed two components. The first is a molecule that lights up when excited, and the second is an energy source to excite the first molecule. But that's not all the chemistry involved - every unique glow stick color requires a different glowing molecule. Our latest episode breaks down the chemistry behind everybody's favorite party favor, the glow stick.
    3 min
  • Bytesize Science - How Sunless Tanner Works: Tan-In-A-Can Chemistry
    In our last episode, we learned that tanning can potentially lead to skin cancer or premature aging, so maybe you're weighing your other options. How about some of that tan-in-a-can that gives you all the bronzed results without the UV exposure? The secret of sunless tanner can be found in the active ingredient, a natural three-carbon sugar called dihydroxyacetone, or DHA. DHA's pigment altering effects were discovered in the mid 1950's by researcher Eva Wittgenstein. The browning is caused by the so-called Maillard reaction.
    3 min
  • Bytesize Science - Repelling the Rays: The Chemistry of Sunscreen
    The first day of summer is June 20th! To celebrate, we're kicking off a trio of summer-themed episodes with a video that explains the chemistry of sunscreen. Whether you have dark or light skin, the truth is that sun exposure can lead to sunburn, premature aging, and skin cancer. Fortunately, using sunscreen properly can help protect your skin all summer long.
    3 min
  • Bytesize Science - Without a scratch: Self-healing materials
    Our latest episode explores materials that mimic the human skin's ability to heal scratches and cuts. For a first-hand look at self-healing plastics, we visited the lab of Nancy Sottos, Ph.D., professor of engineering at the University of Illinois at Urbana-Champaign.  Inspired by human skin, the plastics repair themselves by "bleeding" healing agents when they are cut or scratched. This research offers the promise of cell phones, laptops, cars, and other products with self-repairing, longer-lasting surfaces.
    3 min
  • Bytesize Science - Healing the voice: Synthetic vocal cords
    Synthetic vocal cords may someday heal the voices of singers like Julie Andrews -- whose legendary voice was permanently damaged in a 1997 operation. Filmed in the lab of 2012 ACS Priestley Medalist and MIT Institute Professor Robert Langer, our latest video explains how artificial polymer vocal cords may help repair damaged vocal tissue.
    3 min

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After several years and millions of views, the American Chemical Society (ACS), the world’s largest scientific society, is bidding farewell to its popular YouTube series Bytesize Science. But you…