Design, analysis and simulation of a novel linear capacitive tilt micro-sensor
A new capacitive structure for tilt sensor based on the MEMS technology is designed, analyzed and simulated. With a detailed analysis, we achieve to a precise relation between capacitance and inclination angle. Taking advantage of cylindrical structure ...
Design and performance evaluation of a novel robotic catheter system for vascular interventional surgery
Vascular interventional surgery (VIS) is an effective treatment method for vascular diseases. However, there are many problems in traditional VIS, such as surgeons are radiated by X-ray, the lack of well skilled surgeons, the security of the surgery ...
A flyability and durability dilemma in hard disk drives
A magnetic hard disk drive lubrication dilemma was demonstrated through the touch down, wearability and burnish rate tests. It was found that attempts to improve durability and flyability through changes in lubricant film thicknesses, the addition of ...
Low power highly sensitive platform for gas sensing application
This paper reports a low power miniaturized MEMS based integrated gas sensor with 36.84 % sensitivity (ΔR/R0) for as low as 4 ppm (NH3) gas concentration. Micro-heater based gas sensor device presented here consumes very low power (360 °C at 98 mW/mm2) ...
A very small asymmetric coplanar strip fed multi-band antenna for wireless communication applications
In this paper, a compact tri-band monopole antenna with asymmetric coplanar strip (ACS)-fed structure is proposed for long term evolution (LTE), Wireless Broadband (WiBro), Worldwide Interperability for Microwave Access (WiMAX), wireless local area ...
Analysis of parasitic feed-through capacitance effect in closed-loop drive circuit design for capacitive micro-gyroscope
The drive axis of a capacitive micro-gyroscope sensor forms an `electrical-mechanical' resonator with closed-loop drive circuits when the gyro is in full operation. The parasitic feed-through capacitance, which exists between the driving and sensing ...
The predictive compensation path research of the micro tube fabrication process
Inkjet-based organ printing or 3D organ printing can be implemented using orifice-based and orifice-free approaches. Inkjetting, the most widely used orifice-based fabrication approach, has been applied to fabricate various biological constructs, such ...
A new method for the interaction between multiple DEP particles: iterative dipole moment method
Dielectrophoresis for bio-particle manipulation has been drawing much attention in recent years. The equivalent dipole moment has been widely used to calculate dielectrophoretic forces on a particle, but this method falls short to describe the ...
The research of indirectly-heated type microwave power sensors based on GaAs MMIC technology
In this work, the effect of the temperature and the humidity on the indirectly-heated type microwave power sensor is researched in order to extend its application field, and their mechanism is revealed. The fabrication of this microwave power sensor is ...
On the method of extraction of lumped parameters for the radiation impedance of complex radiator geometries
This work addresses the problem of finding expressions for the radiation impedance of a circular plate with cuts (holes + slits) and mounted in an infinite baffle. Due to the nontrivial nature of the structural geometry and the boundary conditions, ...
Simple and accurate analytical solution to the post-buckling response of an electrostatically actuated MEMS curled cantilever
In this work, we propose to investigate the micro-electromechanical post-buckling response of an electrostatically-actuated curled cantilever microbeam. The analytical/numerical model is based on a nonlinear differential governing equation, derived via ...
Nonlinear dynamics of nano-resonators: an analytical approach
Prior to the design and fabrication of MEMS/NEMS devices, analysis of static and dynamic behaviors of these systems is necessary. In the present study, the nonlinear dynamic behavior of micro- and nano-mechanical resonators is investigated and ...
The cleanroom-free rapid fabrication of a liquid conductivity sensor for surface water quality monitoring
Conductivity is an important issue of water quality detection. Although there are a number of microfluidic liquid conductivity sensors, most of them were difficult to fabricate and required cleanroom facilities, which significantly increased the cost of ...
An optimised silicon piezoresistive microcantilever sensor for surface stress studies
Surface stress is a versatile and efficient means to study various physical, chemical, biochemical and biological processes. This work focuses on developing high sensitive piezoresistive microcantilever designs to study surface stress. The cantilevers ...
Fabrication of a 2-D in-plane micro needle array integrated with microfluidic components using crystalline wet etching of (110) silicon
We propose a two-dimensional (2-D) in-plane micro-needle array with shaft sidewalls aligned parallel to the vertical (111) crystalline plane of (110) silicon. Six types of needle tips with various shapes and tapered angles were fabricated so as to ...
Effects of disk surface roughness on static flying characteristics of air bearing slider by using a combined method of Reynolds equation and rough disk surface
Reynolds equation was modified with adding the surface roughness parameters to analyze the effects of disk surface roughness on the static flying characteristic of an air bearing slider. However, the modification demands the complicated mathematical ...
Effect of a microwave warming of cell culture media on cell viability and confluence rate
Here we present a method for rapidly and stably warming up a small volume of cell culture media that can maintain cell viability and confluence rate. This method uses microwave radiation for warming without any direct contact with water, preventing the ...
A method to simulate the vibrating characters of the resonator for resonant MEMS gyroscope
This paper proposes one study method of resonant MEMS gyroscope based on the circuit in order to solve problems such as long verification cycle and high cost of the MEMS gyroscope structure design. Firstly, on the basis of Euler---Bernoulli beam theory, ...
Design, fabrication and characterization of micro flow sensor inspired by biological hair cell
Design, fabrication and characterization of micro flow sensor were investigated based on the inspiration of biological hair cell in a nature. The micro scale artificial hair cell sensor was designed as considering two parts; first the high aspect ratio ...
Improved performance of the micro planar double-axis fluxgate sensors with different magnetic core materials and structures
As a classic weak magnetic field sensor, the fluxgate sensors have great potential application in many fields. This paper presents four kinds of the micro planar double-axis fluxgate sensors based on the MEMS technologies, which have different core ...
Nonlinear vibration of nanobeam with attached mass at the free end via nonlocal elasticity theory
In the present study, nonlinear free and forced vibration of Euler---Bernoulli nanobeam with attached nanoparticle at the free end is investigated based on nonlocal elasticity theory. The effects of the different nonlocal parameters (ź) and mass ratios (...