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Electromyography (EMG) is a bioelectrical signal used to diagnose musculoskeletal diseases (MSDs) which affects the bio-mechanism, physiology and cognitive effects on human body. Conventional EMG measurement is done by using wet (Ag-AgCl) surface electrodes which requires good electrical contact between the electrode and the human body. One of the major disadvantages of wet surface electrodes is that...
While machines (e.g., computers, tablets, cellphones, robots) have begun to co-exist with humans and cooperatively share various tasks; they are still deficient in interpreting and responding to humans as emotional beings. Wearable biosensors that can be used for computerized emotion recognition have great potential for addressing this issue. This paper presents a novel wearable sensor - EmotiGO -...
A flow injection system using electrochemical biosensor for in-time monitoring of lactic acid at the skin's surface was fabricated and tested. The system consists of a microfluidic ‘skin-patch’ sampling device and an electrochemical biosensor using a carbon graphite electrode. In order to enhance the stability of monitoring, lactic acid excreted at the skin's surface was directly solved into the career...
Confluent monolayers of cells in culture media are usually fragile and are susceptible to mechanical disruption. To assess the growth and migration of the cells towards recovery, the mechanical disruption is often done deliberately to perform wound healing assay. In such analysis, after a scratch in the cell monolayer, electrical characterization has been done to provide related quantitative description...
Medical, artistic and social applications of biomedical signals benefit from the possibility of measuring a person's emotional state, and of creating, through biofeedback techniques, a personal dynamic interaction with the environment. This paper describes a wearable microsensor module used to acquire and preprocess biological signals that are directly related to one's emotional state in daily activities...
Investigation of electrical properties along with molecular expressions of the keratinocyte and fibroblast under different physiological conditions can provide insight into their functioning which can contribute significantly towards skin tissue engineering application. For electrical characterization, cell based biosensors are usually designed with photolithographically patterned electrodes which...
This research aims at building a sensor array system to identify contact pressure distribution between the sensor and its environment. The main characteristic of this sensor array is that very few wires are needed to realize the data acquisition of many sensor units (called sencels) using a frequency modulation method. The repeatability, accuracy and working range of the sensor were experimentally...
Micro- and nano-technology has enabled development of smaller and smarter wearable devices for medical and lifestyle related applications. In particular, recent advances in EEG monitoring technologies pave the way for wearable, wireless EEG monitoring devices. Here, a low-power wireless EEG sensor platform that measures 8-channels of EEG, is described. The platform is integrated into a wearable headset...
This paper discusses a novel hybrid EEG biosensor module that measures through-hair EEG with zero preparation of the scalp. The biosensors can be donned or doffed quickly by the wearer, requiring no skin preparation, produce no skin irritation, and be comfortably worn for an extended period. The proposed EEG sensor is fabricated by the injection molding process with a flexible base and biofriendly...
A novel micromachined electrode is designed and fabricated for a BSN-based vital signs monitoring system. Both theoretical calculation and ANSYS simulation show that buckling problem will not occur for the proposed microneedles during insertion process. The BSN-based vital signs routine monitoring system, which comprises of wireless mote, analog amplifier circuit board and SpO2 (Saturation of Arterial...
This paper presents the development of flexible electrocardiography (ECG) sensors using both a flexible printed circuit (FPCB) and microelectromechanical systems (MEMS) technology. By using FPCB technology, polymer-based ECG sensors of a bipolar Laplacian-type electrode were fabricated and their ECG measurement capability was examined by both implanting the proposed sensors into subcutaneous fat and...
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