RF MEMS capacitive switches show great potential for use in wireless communication device. However, their widespread insertion in commercial products requires further improvements in their longterm reliability. Dielectric charging is one of the factors that impact switch reliability. Dielectric charging is understood to mean the accumulation of electric charge in the insulating dielectric layer...

Capacitive sensing buttons are emerging as a popular interface alternative to mechanical switches in many consumer electronics and white goods applications. However, designing a capacitive sensing interface comes with its own challenges that introduce new product development, production, and quality control concerns. For example, the parasitic capacitance (CP) of capacitive sensing buttons can ...

This work is motivated by a hospital ward rounds scenario in the EU sponsored WearIT@Work Project. Based on a detailed application design and evaluation described in our previous work we have implemented a simple, wearable user interface seamlessly integrated in the doctor’s coat. The interface is based on a multi-electrodes, conductive textile capacitive sensor that allows the doctor to contro...

This paper describes a comprehensive tactile sensor systemwhich can cover wide areas of full-body robots. Based on design criteria which are introduced from requirements, we develop two types of tactile sensor elements. One is a multi-valued touch sensor which has multi-level pressure thresholds. It is capable of coveringwide areas of robot surfaces. The other is made of soft, conductive gel, w...

gas mixing in a t-shape micro mixer has been simulated using the direct simulation monte carlo (dsmc) method. it is considered that the adequate mixing occurs when the mass composition of the species, co or n2, deviates below 1 % from their equilibrium composition. the mixing coefficient is defined as the ratio of the mixing length to the main channel’s height. as the inlet kn increases, while ...

The electrochemical impedance of an iron electrode often shows the capacitive and inductive loops on the complex plane. The capacitive loop originates from the time constant of the charge transfer resistance and the electric double layer capacitance. The inductive loop is explained by Faradaic processes involving the reaction intermediate. In some cases, these loops deviate from a true semicirc...

The Instant Instrument Anywhere (IIA) is a small device which can be attached to any metal object to create an electronic instrument. The device uses capacitive sensing to detect proximity of the player’s body to the metal object, and sound is generated through a surface transducer which can be attached to any flat surface. Because the capacitive sensor can be any shape or size, absolute capaci...