Research May Direct To More Sustainable Power Lines And Cell Phones
Researchers at Binghamton University at New York State University have developed a method to make cell phones more sustainable and dynamic.
Assistant professor of mechanical engineering at Bingham University Towfighian Sherry, and Mark Pallay, a graduate student has a new sort of microelectromechanical systems, commonly termed as MEMS switch using electrostatic levitation made to offer an additional robust system.
“Every mobile phone uses MEMS keys for wireless communication, but conventionally there are just two electrodes,” Towfighian said. “These switches open and close several times in just one hour, but their life are partial by the system with two electrodes.”
When both electrodes come into contact post multiple iterations, the lower surface electrode is damaged, which directs to a MEMS switch that is to be detached and replaced. Some researchers have tried to shun damage by adding landing pads or dimples on the electrodes to lessen the contact area in an electrode crash, but Towfighian stated that this only delays the potential breakdown of the material.
She wanted to make a system that completely evades the damage. Instead of two electrodes, she developed a MEMS switch with three electrodes on the base and a parallel electrode on the other side. The two right and left electrodes are charged while the upper and middle electrodes are grounded.
“This type MEMS switch is normally closed, but the secondary electrodes, an upward force is able to open the forces amid the two electrodes and release the switch,” said Towfighian. This force known as electrostatic levitation is currently not obtainable with the two-electrode system. The ability to create this force avoids enduring damage to the device after constant utilization and enables a reliable exchange of keys.
“For cell phones, this design means a longer service life and fewer replacement parts,” says Towfighian. “For power lines, this type of MEMS switch is useful when the voltage surpasses a limit, and we want to open the switch.