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.
The following topics are dealt with: MEMS sensors; actuiators; fluidics and flow; physical sensors; RF and wireless; actuators; and biochemical sensors.
The article consists of a Powerpoint presentation on development of micro-electrokinetic devices for biomedical applications. The areas discussed include: micro-electro-mechanical systems; bioMEMS technology; biochip; fluidics; lab-on-chip devices; electroosmosis; cell electromanipulation; dielectrophoresis CMOS chip; cell therapy and diagnosis; and cell isolation challenge; etc. etc.
This paper discusses the main issues associated with integrating electrode controlled droplet motion using electro wetting on dielectric (EWOD) with IC foundry technology. The motivation behind this approach is based upon the desire to increase the number of control electrodes, which requires the implementation of on-chip line-column microelectronics. Increasing the number of electrodes is attractive...
We report a simple, high pumping performance, micropump comprising a narrow flow channel with integral flow control structures operated by a single actuator element. Unusually, it does not have a distinct pump chamber. This micropump is termed a 'Linear MTP' (LMTP) as it exploits the microthrottling principle and single actuator operation of MTP devices we have previously reported. Uncharacteristically...
MEMS Microfluidic Ultrasonic Separators are a novel type of micromachined silicon matching layered separation device that separates suspended micro-particles from within a liquid using a standing ultrasonic field. They are widely used in a variety of applications including chemical, bio-medical, and biological engineering. For example, in the biotechnology field, mammalian cells, bacteria, and yeasts...
The design of EAP actuators, in the form of active dimples for flow control, is described. Manufacturing techniques have been adopted from MEMS processing. The final design comprises 10 mm dimples manufactured on 100 mm silicon wafers; the electrodes consist of graphite powder. Initial electromechanical tests have been carried out and experimental data correlate well with theory. The results show...
The paper presents the design principles of a degenerate mode resonant mass sensor in which the unloaded sensor takes the form of a cyclically symmetric structure. The simplest structure with these features is a circular diaphragm and its properties are exploited in this paper. Such structures support pairs of independent modes of vibration which share a common natural frequency and these are referred...
The successful development of a MEMS gyroscope, targeted at high volume, low cost applications, requires careful consideration of both the design and the fabrication requirements. It is essential that the design requirements (e.g. dimensional tolerances) are comfortably within the process capabilities in order to maximise yield at each step. This becomes increasingly important as the design becomes...
There are many examples of creatures in the natural world with the ability to sense thermal radiation including pit vipers and fire-seeking beetles. This work has sought inspiration from sensors in the natural world and has investigated a disruptive MEMS-based technology with the potential to achieve high performance uncooled infra red detection at low cost. The novel transduction is based on individual...
Many markets have already successfully introduced MEMS based products in a very large panel of applications. When looking carefully at the market implantation, it is very interesting to see that benefits of this technology go well beyond the obvious size advantage. Size and weight but also performance, power consumption, parallel manufacturing capability and cost or reliability are common arguments...
Scent Whisper is a jewellery set integrated with wireless sensor networks that offer social and therapeutic value in a desirable context. The jewellery incorporates sensors and microfluidics to initiate fragrance delivery, depending on the sensor response. A wireless humidity sensor is used to trigger scent output in these proof-of-concept devices. Future devices will use sensors to detect stress...
Today, the capability of the human olfactory system is still, in many ways, superior to that of artificial detection or the so- called electronic nose. Although electronic noses are often compared to their biological counterpart, they neither mimic its complex neural architecture nor achieve its performance in discriminating between complex odours. Recent developments in our understanding of the human...
The present work reports a simple, rapid and versatile strategy for glycoprotein immobilization, based on the targeted functionalization of carbohydrate residues with disulphide "anchors" derivatives able to spontaneously chemisorb onto gold, with no need of surface pre-functionalization. Different glycoproteins as enzymes and antibodies were chemically modified using this "one step"...
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.