Light Source Lasts 12 Years - No Electricity Needed
December 13, 2007 by Lisa Zyga
A company called MPK is designing a light source that will glow continuously for more than 12 years without any additional energy.
The material, dubbed "Litrosphere," can cover a standard sheet of paper for a cost of about 35 cents, and comes in a variety of colors. It´s also flexible, and can take the form of either paint or injection-molded plastic. The material is not affected by the heat or cold, can withstand 5,000 pounds, and stays on constantly.
According to the company's patent, the material is based on betavoltaics and uses the radioactive gas tritium as the power source. The beta particles from the tritium radiation can be safely contained by phosphor-coated microspheres. Tritium has a half-life of about 12 years.
MPK specializes in glow-in-the-dark paint and other glow products, although the new material does not need to be exposed to light in order to work. The company predicts that the technology could be used for light safety tape, lighted life rafts/flotation equipment, toys, sports/camping equipment, and bikes.
"This has potential to save billions in energy costs world-wide," said Steve Stark, MPK engineer. "Litroenergy surpasses all known available lighting options for cost/durability/reliability and safety."
Litroenergy has recently been added to the New Energy Congress' (NEC) list of Top 100 Technologies (rank pending). However, its use will likely be limited to applications that don´t require a great deal of light.
"The intensity is not very strong," noted NEC member Richard P. George. "This is good enough for night illumination of rifle scopes, watches, and emergency signs, but it is not going to come anywhere close to matching the light output of or replace electric light bulbs (incandescent, fluorescent, LED, etc.) or kerosene lanterns."
There are also rumors that MPK may use similar technology as a power source in the future.
"It´s not something the company is ready to talk publicly about yet, but they do have battery technology that would be of the same ilk: betavoltaic technology allowing continuous power for years in all battery applications, including automobiles," said NEC member Sterling D. Allan. "They think they will be able to win the DoD [Department of Defense] contest for the $1 million prize for backpack battery tech."
More information: Litroenergy at Wiki Directory
Litroenergy Patent
2 hours ago
I would rather drive a car that may leak a little radiation if some horrific accident occurred then die immediately in a ball of flames from gasoline combustion.
People just freak over nuclear powered stuff for some reason. Yet they gladly breath sulfur dioxide from coal plants and strap themselves into cars powered by highly flammable liquid fuel:P. Smart. (And as a side note, because of the small amounts of uranium and thorium and such things that exist in all coal, all coal plants actually produce more radioactivity per watt generated than the most inefficient nuclear plant in the world.)
Versatile, abundant and low cost electrical energy - this can power micro devices, electric car, homes, etc. for 20 years. Green Tech the world needs today!
The technology aims to replace batteries, generating low-cost electricity for everything from micro devices to utility applications has groundbreaking implications and potential to turn the battery business upside down.
Litroenergy is made from litrospheres, which are self-illuminating micro particles that, when they are placed on or sandwiched between solar cells, generate electricity. The light-emitting micro particles are not affected by heat or cold and can be used in sheet form for easy application on solar cells.
%u201CThe many novel, versatile and far reaching applications/benefits for low cost on-going durable, solid state power generation without using any additional resources and being extremely environmentally friendly has ground breaking implications for our energy consuming world.%u201D
See NASA Tech Brief's Contest site or Litroenergy.com web site for more information on this technology.
Sincerely,
Steve Stark