Q No - Air University
... Q No. 5: (a) For the case of a uniformly charged conducting spherical shell of radius R (Fig. 3), show that electric potential at some external point varies inversely as distance from its centre whereas the potential at some internal point is constant, the same as that on its surface. ...
... Q No. 5: (a) For the case of a uniformly charged conducting spherical shell of radius R (Fig. 3), show that electric potential at some external point varies inversely as distance from its centre whereas the potential at some internal point is constant, the same as that on its surface. ...
`Express lanes` for ions: By aligning carbon nanotubes in
... aligned carbon-nanotube electrodes can enhance ion performance in an actuator, meaning they could Both devices typically contain electromechanical materials, such as electroactive polymers, that are be optimized for applications like artificial muscles made of chainlike molecules that change in size ...
... aligned carbon-nanotube electrodes can enhance ion performance in an actuator, meaning they could Both devices typically contain electromechanical materials, such as electroactive polymers, that are be optimized for applications like artificial muscles made of chainlike molecules that change in size ...
Electroactive polymers
Electroactive polymers, or EAPs, are polymers that exhibit a change in size or shape when stimulated by an electric field. The most common applications of this type of material are in actuators and sensors. A typical characteristic property of an EAP is that they will undergo a large amount of deformation while sustaining large forces.The majority of historic actuators are made of ceramic piezoelectric materials. While these materials are able to withstand large forces, they commonly will only deform a fraction of a percent. In the late 1990s, it has been demonstrated that some EAPs can exhibit up to a 380% strain, which is much more than any ceramic actuator. One of the most common applications for EAPs is in the field of robotics in the development of artificial muscles; thus, an electroactive polymer is often referred to as an artificial muscle.