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Work has been performed at the University of Maryland by the electron beam physics group to design and develop a prototype capacitive Beam-Position-Monitor (BPM) for an electron ring project. Extensive theoretical work and PSPICE simulation of the equivalent circuit of the BPM have been conducted to fully understand the behaviour of the capacitive BPM. This BPM has 4 pieces of electrostatic pic...

Capacitive touch sensing is increasingly used in musical controllers, particularly those based on multi-touch screen interfaces. However, in contrast to the venerable piano-style keyboard, touch screen controllers lack the tactile feedback many performers find crucial. This paper presents an augmentation system for acoustic and electronic keyboards in which multi-touch capacitive sensors are ad...

This article describes results obtained using various plasma and surface diagnostics in a study of inductively coupled fluorocarbon plasmas in which the amount of capacitive coupling was systematically varied. It is found that the plasma density decreases while the electron temperature increases as the amount of capacitive coupling is increased at a constant source power level. The rate at whic...

A capacitive tactile sensor and a thermal sensor that can be combined into one compact device with both modalities are illustrated. The tactile sensing portion is composed of an 8 8 array of capacitive cells. By using as thermoresistors the rows’ traces of the matrix of the capacitive tactile array sensor thermal sensing is obtained. This allows the detection of the gradient of the temperature....

For the advent of pervasive bio-potential monitoring, it will be necessary to utilize a combination of cheap, quick to apply, low-noise electrodes and compact electronics with wireless technologies. Once available, all electrical activity resulting from the processes of the human body could be actively and constantly monitored without the need for cumbersome application and maintenance. This co...

As the core component of the sense of touch, flexible pressure sensors are critical to synchronized interactions with the surrounding environment. Here, we introduce a new type of flexible capacitive pressure sensor based on a template of electrodes, with a one-dimensional pyramid micropatterned structure on a Polydimethylsiloxane (PDMS) substrate and a dielectric layer of polystyrene (PS) micr...

An enormous source of clean energy, called salinity gradient (SG) exists from mixing waters with different salinities. Harvesting SG energy has attracted lots attentions to develop efficient technologies. However, the power output is still limited. In this study, a concentration flow cell (CFC) powered by bioelectrochemical system, defined as bio-CFC, was proposed recover synthetic seawater (30...