Pistol rubber band energy storage mechanical electronics

How much energy does a rubber band use?

For this particular rubber band, I get a volume of 8.1 x 10 -7 m 3. This would give a rubber band energy density of 2.2 MegaJoules/m 3 for stretching and 8.9 MegaJoules/m 3 for twisting. That might seem like a lot of energy, but remember that gasoline has 34 GigaJoules/m 3.

Can flexible energy storage devices improve mechanical performance?

In general, realizing the ultimate improvement of the mechanical performance of energy storage devices is challenging in the theoretical and experimental research of flexible electronics. As an important component of flexible electronics, flexible energy sources, including LIBs and SCs, have attracted significant attention.

Do rubber bands have the same elastic potential energy?

Yes, I believe they do possess the same amounts of elastic potential energy. By stretching both rubber bands to breaking points, this means that both are stretched for equal distance, only that one loops around itself when twisted, while the other gets stretched far apart. In the end, they will possess the same amounts of elastic potential energy.

Why is flexible energy storage important?

The development of flexible electronics critically demands highly flexible energy storage devices, which not only have high energy/power density and rate performance similar to conventional power sources but also possess robust mechanical properties. 15 These devices can further improve the integration degree of the entire electronic systems.

What is the energy density of a rubber band?

This would give a rubber band energy density of 2.2 MegaJoules/m 3 for stretching and 8.9 MegaJoules/m 3 for twisting. That might seem like a lot of energy, but remember that gasoline has 34 GigaJoules/m 3. Oh, what about the specific energy? Again, this is just the energy stored per unit mass. The rubber band has a mass of 1.09 grams.

How does rubber tubing convert mechanical energy to electricity?

This work describes the conversion of mechanical energy to electricity, by periodically stretching rubber tubing and allowing it to relax. The rubber surface shows periodic and reversible electrostatic potential variations, in phase with the tubing length.