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Functional electrical stimulation (FES) activates nerves using electrical currents, and is widely used in medical applications to assist movement of patients with central nervous system lesions. The recent emergence of small electrode arrays enables greater muscle selectivity and reduces fatigue compared to the use of traditional large electrodes; however(More)
This paper presents the modeling and optimization of an electromagnetic-based generator for generating power from ambient vibrations. Basic equations describing such generators are presented and the conditions for maximum power generation are described. Two-centimeter scale prototype generators, which consist of magnets suspended on a beam vibrating(More)
This paper describes a novel miniature wind generator for wireless sensing applications. The generator consists of an aerofoil that is attached to a cantilever spring. The airflow over the aerofoil causes the cantilever to bend, the degree of bending being a function of the lift force from the aerofoil and the spring constant. As the cantilever deflects,(More)
Emotions affect many aspects of our daily lives including decision making, reasoning and physical wellbeing. Researchers have therefore addressed the detection of emotion from individuals' heart rate, skin conductance, pupil dilation, tone of voice, facial expression and electroencephalogram (EEG). This paper presents an algorithm for classifying positive(More)
This paper reports a flexible capacitor for wearable applications which has been all-inkjet printed on a standard 65/35 polyester cotton textile using a new poly(4-vinylphenol) (PVP) dielectric material. Capacitors form the basis of a variety of sensors, such as for proximity and touch, as well as electronic circuits. This paper reports a general(More)
This paper presents a piezoelectric vibration energy harvester fabricated using screen printing. The formulation of a novel tungsten based polymer ink enables the deposition of an inertial mass enabling the entire structure to be fabricated by the printing process. The devices have been designed for use on an aircraft Health and Usage Monitoring System(More)
This paper reports a bimorph piezoelectric vibration energy harvester incorporating multiple PZT layers. The advantage of a multi-layer generator is that it produces a higher power than a single-layer generator having the same total thickness. In addition, a lower voltage is required to polarize a multi-layer generator reducing the risk of breakdown during(More)
Most traumatic lower limb amputees ambulate using a prosthetic limb. Comfort, appearance of the missing limb and function are confirmed as being important during rehabilitation post-amputation. Emerging evidence suggests that impaired tissue viability of the stump affects rehabilitation and thus clinical ability to provide optimum care. The primary(More)
This paper presents a method of removing the noise caused by eye blinks from an electroencephalogram (EEG) signal in real time based on morphological component analysis (MCA). This method sparsely represents both the eye blink and the EEG signal basis matrices using a Short Time Fourier Transform (STFT). This approach has two main advantages: 1) fast(More)
We report a direct write inkjet printing technique for fabricating a flexible antenna on textile for use in smart textile applications such as wearable systems (Rienzo et al. 2006). The complete antenna was deposited entirely using inkjet printing. The inkjet printed antenna is based on a half wavelength dipole antenna offering a planar structure and(More)