American researchers developed electrostatic suspension MEMS switch

May 31st this year, three ministries jointly issued by the notice about 2018 photovoltaic related matters. Notice points out, temporarily not arrange 2018 ordinary photovoltaic power station construction scale. At the same time, the new operation of photovoltaic power station five cents per KWH unified reduce electricity price benchmarking. It was also known as photovoltaic industry & other; 531 New Deal & throughout; 。

　　[ According to physics organization website reported jan 03, 2019] And binghamton university, state university of New York researchers developed a method of cell phone and power lines more durable.

binghamton university in mechanical engineering, an assistant professor of Sherry Towfighian and graduate student Mark Pallay designed a new type of microelectronic mechanical switch system, commonly referred to as MEMS switch, it USES the electrostatic suspension technology provides a powerful work system.

　　“ All mobile phones use MEMS switch for wireless communication, but the traditional MEMS switch using double electrode system & throughout; Towfighian说，“ These switches in one hour will be countless times switch operation, their current life is subject to the conditions of double electrode system. ”

when two electrodes repeatedly contact, at the bottom of the electrode surface will be destroyed, cause the MEMS switch must be abandoned or replaced. Some researchers tried to add a groove or cushion on the electrode to reduce electrode collision when the contact area, so as to avoid damage, but Towfighian explained that this is just delay the material damage.

Towfighian want to create a complete system to avoid damage. But she did not adopt double electrode model, design a new MEMS switch structure, consists of three bottom electrode and a parallel the top electrode. The bottom of the left and right sides of the electrode voltage, the intermediate electrode and the top electrodes.

Towfighian explained: & other; New MEMS switch state usually is closed, but the left and right sides of the electrode can provide a pull up, pull can overcome the size of the middle forces between two electrodes, and open the switch. ” This technique is known as the electrostatic suspension, in the double electrode can't be used in the system. Electrostatic suspension can prevent equipment after a continuous use of permanent damage, and can implement reliable two-way switch.

　　Towfighian说：“ For mobile phones, this design means a longer service life and less component replacement. For the wire, when the voltage exceeds the limit, and we want to turn on the switch, the MEMS switch can be very useful. This design enables us to use more reliable MEMS switch to monitor the abnormal peak voltage, such as voltage spike caused by the earthquake, it will pose a threat to public safety. ”

the called & other; Using electrostatic suspension reliable MEMS switch & throughout; The study is published in the Physics Letters.