Nuclear Batteries-Daintiest Dynamos
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17-09-2009, 01:06 AM

Nuclear Batteries-Daintiest Dynamos

Micro electro mechanical systems (MEMS) comprise a rapidly expanding research field with potential applications varying from sensors in air bags, wrist-warn GPS receivers, and matchbox size digital cameras to more recent optical applications. Depending on the application, these devices often require an on board power source for remote operation, especially in cases requiring for an extended period of time. In the quest to boost micro scale power generation several groups have turn their efforts to well known enable sources, namely hydrogen and hydrocarbon fuels such as propane, methane, gasoline and diesel. Some groups are developing micro fuel cells than, like their micro scale counter parts, consume hydrogen to produce electricity. Others are developing on-chip combustion engines, which actually burn a fuel like gasoline to drive a minuscule electric generator. But all these approaches have some difficulties regarding low energy densities, elimination of by products, down scaling and recharging. All these difficulties can be overcome up to a large extend by the use of nuclear micro batteries.

Radioisotope thermo electric generators (RTGs) exploited the extraordinary potential of radioactive materials for generating electricity. RTGs are particularly used for generating electricity in space missions. It uses a process known as See-beck effect. The problem with RTGs is that RTGs don't scale down well. So the scientists had to find some other ways of converting nuclear energy into electric energy. They have succeeded by developing nuclear batteries.


Nuclear batteries use the incredible amount of energy released naturally by tiny bits of radio active material without any fission or fusion taking place inside the battery. These devices use thin radioactive films that pack in energy at densities thousands of times greater than those of lithium-ion batteries. Because of the high energy density nuclear batteries are extremely small in size. Considering the small size and shape of the battery the scientists who developed that battery fancifully call it as "DAINTIEST DYNAMO". The word 'dainty' means pretty.

Scientists have developed two types of micro nuclear batteries. One is junction type battery and the other is self-reciprocating cantilever. The operations of both are explained below one by one.


The kind of nuclear batteries directly converts the high-energy particles emitted by a radioactive source into an electric current. The device consists of a small quantity of Ni-63 placed near an ordinary silicon p-n junction - a diode, basically.

As the Ni-63 decays it emits beta particles, which are high-energy electrons that spontaneously fly out of the radioisotope's unstable nucleus. The emitted beta particles ionized the diode's atoms, exciting unpaired electrons and holes that are separated at the vicinity of the p-n interface. These separated electrons and holes streamed away form the junction, producing current
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27-01-2010, 07:06 PM

can i get the full report on this ,this is interesting
computer science technology
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27-01-2010, 07:54 PM

please read

if you want more information than this please reply below
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13-07-2010, 10:21 PM

sir i'm intrested in this topic ... if you could pls post its repot plz Smile
projects wizhard
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14-07-2010, 09:22 PM

MARVELS-starting from your cellphone.
There has been tremendous research going on harvesting the incredible amount of energy released naturally by tiny bits of radioactive material. All energy comes from high-energy particles
spontaneously emitted by radioactive elements. A speck of a radioisotope like nickel-63 can produce enough power to power a MEMS device for decades along with the proper packaging and safety considera-
tions many useful devices can be built.By using the technique of trickle charging these batteries can go for months between recharges. These batteries can last as long as the half-life of the radioactive source. efficiency to 20 percent can be achieved with this . NASA has been using radioisotope thermoelectric generators since the 1960's itself. Seebeck effect is used here.

ONE OF THE MICROBATTERIES could directly converted the high-energy particles emitted by a radioactive source into an electric current. The device consisted of a small quantity of nickel-63 placed near an ordinary sili-
con p-n junction. The emitted beta particles ionized the diodeâ„¢s atoms. 3 nanowatts could be generated with 0.1 millicurie of nickel-63. Newer ones produce electricity indirectly, like minute generators. Here the Radiation is first converted into mechanical energy and further to oscillating pulses of electric energy. They provide energy in brief pulses, but their efficiency is no less.

You can refer this IEEE article:
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10-09-2010, 06:32 PM

i want full seminar and presentation report on nuclear batteries
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09-07-2011, 09:48 AM

currently we not possessed ready made report of Nuclear micro battery but we already discussed several facts about Nuclear micro-battery in following pages
, here you can make a good report by referring those contents
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07-02-2013, 05:23 PM

I need full report and Ppt of Nuclear Batteries

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