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A New Calibration Method For Low Cost Mems Inertial Sensor Module, Sheng-Chih Shen, Chia-Jung Chen, Hsin-Jung Huang
A New Calibration Method For Low Cost Mems Inertial Sensor Module, Sheng-Chih Shen, Chia-Jung Chen, Hsin-Jung Huang
Journal of Marine Science and Technology
This paper presents a new calibration method to overcome the challenges of MEMS inertial sensors for underwater navigation. The MEMS inertial sensor module is composed of an accelerometer, a gyroscope and a circuit of signal process. For navigation estimation, it is easy to be influenced by errors which come from MEMS inertial sensors. In general, the sources of error can be categorized into two groups, deterministic type and stochastic type. The former primarily includes bias errors, misalignment and nonlinearity; the latter contains temperature effect and signal drifting. Subsequently, the linearity calibration is used to modify the deterministic error and the …
Modeling And Testing Of Dna Motion For Nanoinjection, Regis Agenor David
Modeling And Testing Of Dna Motion For Nanoinjection, Regis Agenor David
Theses and Dissertations
A new technique, called nanoinjection, is being developed to insert foreign DNA into a living cell. Such DNA transfection is commonly used to create transgenic organisms vital to the study of genetics, immunology, and many other biological sciences. In nanoinjection, DNA, which has a net negative charge, is electrically attracted to a micromachined lance. The lance then pierces the cell membranes, and the voltage on the lance is reversed, repelling the DNA into the cell. It is shown that DNA motion is strongly correlated to ion transport through a process called electrophoresis. Gel electrophoresis is used to move DNA using …
Continuous Electrowetting Actuation Utilizing Current Rectification Properties Of Valve Metal Films, Corey M. Lynch
Continuous Electrowetting Actuation Utilizing Current Rectification Properties Of Valve Metal Films, Corey M. Lynch
USF Tampa Graduate Theses and Dissertations
Electrowetting on dielectric (EWOD) is a technique for reducing the apparent contact angle of a fluid droplet, which has many promising applications in the fields of optics, digital displays, and lab-on-a-chip research. In this thesis, a design is presented for a novel single circuit device for achieving continuous droplet motion, by using the current-rectifying properties of valve metals to create diode-like behavior. This contrasts with existing designs, which require an array of individual electrodes to achieve motion in discrete steps. We are able to demonstrate continuous droplet motion across a 28mm-long test strip with an applied voltage of 303 V …
A Web And Mobile System For Environmental Decision Support, James Carswell, Keith Gardiner, Michela Bertolotto, Andrea Rizzine
A Web And Mobile System For Environmental Decision Support, James Carswell, Keith Gardiner, Michela Bertolotto, Andrea Rizzine
Books/Book chapters
Current field data collection methods for many of today’s scientific and other observer/monitor type applications are still entrenched in the “clipboard age”, requiring manual data transcription to a database management system at some (often much) later date, and only allows for visualisation and analysis of recently captured field data “back in the lab”. This chapter is targeted at progressing today’s pen & paper methodology into the spatially enabled mobile computing age of realtime multi-media data input, integration, visualisation, and analysis simultaneously both in the field and the lab. The system described is customized to the specific needs of the Canadian …
Design And Fabrication Of Structured Roughnesses In Microchannels With Integrated Mems Pressure Sensors, Tushara Pasupuleti
Design And Fabrication Of Structured Roughnesses In Microchannels With Integrated Mems Pressure Sensors, Tushara Pasupuleti
Theses
As the demand for cooling is increased for high-density powered electronic devices, researchers have proposed solutions to improve the efficiency of the microchannel liquid cooling system to meet these requirements. Introducing roughness in the microchannels is one of the approaches to enhance the heat transfer. The fluid flow behavior needs experimental investigation before exploring the heat transfer efficiency. A test structure consisting MEMS pressure sensors were fabricated along the length of the microchannel. Smooth microchannels and rough microchannels with structured roughness were fabricated. A fabrication process flow has been developed to fabricate the microchannel and the pressure sensor on the …
Mems Bio-Probe Devices For Monitoring Of Various Blood Properties, Jeffrey Traikoff
Mems Bio-Probe Devices For Monitoring Of Various Blood Properties, Jeffrey Traikoff
Journal of the Microelectronic Engineering Conference
A set of MEMS Bio-Probes is designed, fabricated over a five-week period, then packaged and tested for functionality. The devices were fabricated to near completion however they were not brought to a point where they could be electrically tested. The fabrication of the devices went remarkable well. This indicates that there is potential for the device to work as originally intended.
A Two Degrees-Of-Freedom (Dof) Scanning Micromirror Using Thermocapillary Effect In Microdroplets, Rakesh Dhull
A Two Degrees-Of-Freedom (Dof) Scanning Micromirror Using Thermocapillary Effect In Microdroplets, Rakesh Dhull
Theses
This thesis research proposes a novel and simple means of tilting micromirror on a microdroplet by utilizing thermocapillary actuated droplet deformation. Device theory, device design, fabrication, packaging, testing and results are discussed to demonstrate the operation of a 2-degrees-of-freedom (2- DOF) scanning micromirror. Thermocapillary, or Marangoni, effect and contact angle hysteresis are employed to control the droplet shape and position. Hysteresis in different liquids is studied with its influence on the stability of the droplet. The device consists of a micromirror placed onto a microdroplet, and can produce a 6.5° tilting angle when actuated at 30 V. The tilting angle …
Ion-Sensitive Field Effect Transistor (Isfet) For Mems Multisensory Chips At Rit, Murat Baylav
Ion-Sensitive Field Effect Transistor (Isfet) For Mems Multisensory Chips At Rit, Murat Baylav
Theses
This study involves the design and fabrication of an Ion-Sensitive Field Effect Transistor (ISFET), which is aimed to be incorporated into the multisensory chips fabricated at RIT. ISFETs are used for various purposes in biomedical, medicine, and chemical applications and have advantages such as small size, low power consumption, robustness, and fast response time, over the ion-selective electrode (ISE) counterparts. The capability of fabricating ISFETs in a standard CMOS process let them to be used in sensor systems together with the dedicated signal processing circuitry which in turn makes portable applications possible. The ISFET fabricated in this study have a …
Development Of A Three-Axis Mems Accelerometer, Jacob Leveto
Development Of A Three-Axis Mems Accelerometer, Jacob Leveto
Theses
While originally developed to deploy air bags for the automotive industry, Microelectromechanical Systems (MEMS) based accelerometers have found their way into everything from video game controllers to cells phones. As prices drop and capabilities improve, it is expected that the use of accelerometers will further expand in the coming years. Accelerometers currently have the second highest MEMS sales volume, trailing only pressure sensors [1]. In this work several single and three-axis accelerometers are designed, fabricated, and tested under a variety of conditions. The designed accelerometers are all based off of the piezoresistive effect, where the value of a resistor changes …
A Multi-Sensor Chip For Monitoring The Quality Of Drinking Water, Heidi Purrington
A Multi-Sensor Chip For Monitoring The Quality Of Drinking Water, Heidi Purrington
Theses
A MEMS based multi-sensor chip has been developed for the purpose of monitoring turbidity, TDS, and temperature in a sample of drinking water. The benefits of MEMS technology over conventional sensors include compact size, low power consumption, integration capability, and low cost bulk manufacturing. Two revisions of the multi-sensor silicon chip were designed, fabricated, and tested. The layout of the chip and the fabrication process were redesigned in the second spin to provide more robust and sensitive responses. The sensor structures include photodiodes, temperature diodes, interdigitated electrodes in direct contact with the sample, and capacitive interdigitated fingers. The sensors were …
Development Of A Compact Optical System For A Forward-Looking Endoscope, Anandi Kalyan Dutta
Development Of A Compact Optical System For A Forward-Looking Endoscope, Anandi Kalyan Dutta
LSU Master's Theses
ABSTRACT Optical Coherence Tomography has been effectively used for endoscopy in many previous studies. In this work, a 2 mm diameter forward-looking endoscope is developed with the help of MEMS technology and Optical Coherence Technology (OCT) to obtain in-vivo cross-sectional images of tissues or body cavities. The design consists of a GRIN lens, optical fiber and MEMS chip that are placed in line to fulfill the aim of achieving a 2 mm diameter probe. A standard assembly process has been established for the probe. An anisotropic etching was performed on the sample chip to create the V-groove for carrying the …