The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A growing number of elderly people in Poland and Europe forces to look for new solutions for the continuous monitoring of people health state. This approach allows elderly for an action in case of dangerous situations for older patients' life (state before heart attack or stroke, etc.). The system for continuously monitoring the health state also allows a quick action of first contact doctors in the...
Intravenous (IV) cannulation is a routine procedure for hospital patients for drug or fluid administration. Successful delivery of drugs and fluids depends on the cannula remaining in the vein at all times. Extravasation is a complication of IV cannulation and refers to the accidental leakage of drugs or fluids from the vein to the surrounding tissues when the IV cannula moves out of the vein. The...
A three dimensional paper-based analytical device (PAD) with multiple electrochemical sensors, an integrated sample reservoir and tight integration with a custom CMOS potentiostat is presented. The sensors are fabricated using a combination of wax printing and screen printing using a solution based approach in ambient conditions without the need for expensive fabrication equipment or a cleanroom....
In this paper, we present a novel approach to ISFET arrays which allows the conception of ion imaging Lab-on-CMOS platforms. K+ and Na+ selective polymer membranes are deposited on the surface of the array so that each pixel is selective to a particular ionic species. An initial calibration produces an accurate mapping of the array in terms of ion-selective regions and determines the sensitivity of...
In this contribution, we will present a modeling approach based on a stochastic algorithm that can generate non-rigid solid objects in a three-dimensional space, emulating with high fidelity the typical fabrication processes involved (i.e. spray-coating). A randomly generated set of tube segments and tube junctions is converted into a netlist and the overall electrical behavior is computed via a SPICE...
This paper reports on the experimental study of the effects of volume scaling in aluminum nitride (AlN) nano plate resonators on quality factor. For the first time, we show that efficient piezoelectric transduction of a high frequency (∼ 1 GHz) lateral-extensional mode of vibration and a high quality factor approaching 900 can be achieved when the thickness of the AlN nano plate is scaled from 200...
To realize a high-density spin-transfer-torque magnetic random access memory (STT-MRAM) device comparable with a current dynamic random access memory (DRAM) device, it is a key to develop a new technology for memory cell size reduction. We have already reported a chemical- mechanical-polishing(CMP)-based preparation technology for magnetic tunnel junctions (MTJs) above the via holes that can drastically...
The demands and interests in non-contact health monitoring have increased rapidly in recent years due to its noninvasive method and easy to use in daily life. In this paper, a real time and non-contact based cardiac monitoring system including a sensor is presented. The sensor is capacitively-coupled with human skin and does not cause impediments in the natural movement of the user. Moreover, low...
This paper introduces a sensing and stimulation system to transfer the electromyogram (EMG) signal from one limb to another, aiming to enable self-electro-physical therapy. The presented technique depends on sensing EMG signal from one limb muscle and, simultaneously, stimulating the corresponding muscle in the other limb by this signal. The technique has been implemented on a standalone cheap microcontroller...
This paper reports the design and analysis of a single drive mass three axis Microelectromechanical systems (MEMS) gyroscope. The proposed MEMS gyroscope contains a unique and simple coupling spring to couple the driving masses. Due to the use of this coupling spring, the stress effect on the spring ends is reduced as it is attached at two points with the driving mass. Moreover, the unwanted motions...
This paper intends to implement a method for automatic measuring of various soil properties using three different sensors including ion selective electrodes (ISEs). Automatic detection of soil macronutrients is beneficial in recording soil nutrient variability for soil reports. The data obtained from the system is printed in these reports along with soil sample number. Ion-selective electrodes (ISEs)...
Background. Lifelogging stands for an activity to digitalize human daily lives, which was widely adopted in the therapy for a series of neurodegenerative diseases using dedicated devices [5]. Nowadays, due to the increasing popularity of mobile devices, the usage of lifelogging has been dramatically expended. For instance, it already becomes an emerging culture for people to collect their daily memorial...
In this study, a resonant frequency tunable silicon fishbone-shaped MEMS (micro-electro-mechanical systems) double-ended tuning fork is presented, which realizes digitally tunable resonant frequency function. Different from conventional electrostatic actuation methods, this fishbone-shaped DETF integrates six pairs of short beams on two main beams. The moment generated by the short beam causes the...
Sensors capable of in-liquid operation are of primary importance not only for biosensors applications but also for liquid monitoring. Thin film electroacoustic (TEA) devices have emerged as promising choice for such applications. The most common TEA devices are the thin film bulk acoustic wave resonator (FBAR) and the Lamb wave resonator (LWR). FBAR operating on the shear mode have been widely studied...
In this paper, we present electro-thermal analysis and design of a combined MEMS micro hotplate and interdigitated-capacitance impedance sensor for gas sensing application using nano-porous materials like metal organic framework (MOF). The effects of design parameters of interdigitated electrodes such as width(W) and gap(G) of the capacitor, metallization ratio, number of electrodes and area of the...
The aim of this work is to develop an accurate method for pattern recognition of human hand motions. Eight surface EMG electrodes (dual type) were placed on the forearm of healthy subjects while performing individual wrist and finger motions. A total of 1080 signals that incorporated all the selected nine hand motions were acquired from 12 volunteers, preprocessed, and then time-domain features were...
The fingerprint sensor is promising as a personal identification method for the devices. For downsizing and the cost reduction of the fingerprint sensor, capacitance method is main stream for the portable devices such as Smartphone's. Conventionally, expensive sapphire glass has been used as insulating layer of fingerprint sensor, but sapphire glass is required to be replaced by low-cost substitute...
The objective of this study work is to develop an on-the-go soil pH mapping system prototype for precision agriculture. The proposed system comprises of a soil pH measuring unit, hydraulic soil sampler and a platform. The measuring unit includes obtained pH electrode, pH probe interface, microcontroller and Laptop as a primal unit. A secondary commercial soil pH sensor was obtained and used as reference...
Bıocompatıbılıty remains a critical issue due to the foreign body response following device implantation. “Collagen” is the main bio-material composed around the implanted devices. This paper reports the possibility to measure the thickness of the “Collagen layers” using impedance measurement. An implanted passive circuit sensitive to the collagen thickness is wirelessly connected to the external...
This paper presents a novel micro shell resonator (MSR) with eight circular-distributed T-shape masses based on fused silica (FS), which is fabricated by combining micro blowing-torch process with high precise mold. FS is been heated instantaneously above the softening point by micro blowing-torch and flow down into the mold. The resonator shell is shaped using a pressure difference and surface tension...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.