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The novel design of capacitive RF MEMS switches using torsion spring is presented and analyzed in this paper. The RF MEMS switches not only have ordinary folded suspending beams, but also add torsion springs. The simulation results show that compared with ordinary bending deflection, the torsion deflection is sensibly influenced by the ratio of the arm(More)
It is the first time this paper investigates the fundamental characteristics of the loop antenna formed single-walled carbon nanotubes from 1.0∼10 terahertz frequency region using finite integral methods. The armchair single-walled carbon nanotubes can be considered due to their metallic conducting. The surface current dense, electric field and(More)
We have developed a surface micromachining process utilizing the Cu — Ni dual metal layer as the sacrificial layer to fabricate the metal-contact RF MEMS switch. No seed layer is required for electroplating the structural layer, when the metallic sacrificial layer, such as Ni and Cu, is employed. Some inherit problems were found when using a single(More)
In this paper, we propose a novel laterally driven RF MEMS capacitive switch using parylene as insulation dielectric, taking advantages of low temperature deposition and conformal coating of parylene. The switch consists of three parts, including CPW line, switching plates and actuated structures which are composed of single crystalline silicon (SCS) bonded(More)
Metamaterials have received extensive attention in recent years due to their exotic electromagnetic properties. Here, we investigate an artificial Kerr-medium based on microwave metamaterial for phase modulator application, which can offer a strong engineered anisotropic response. Moreover, the artificial Kerr-medium can be tuned by changing the capacitance(More)
One "signal on" electrochemical sensing strategy was constructed for the detection of a specific hepatitis B virus (HBV) gene sequence based on the protection-displacement-hybridization-based (PDHB) signaling mechanism. This sensing system is composed of three probes, one capturing probe (CP) and one assistant probe (AP) which are co-immobilized on the Au(More)
Currently, the LXI data acquisition system often requires high speed, large capacity memory, but the internal storage resource of FPGA is not sufficient to meet the requirements. In order to solve above problems, a SDRAM controller is proposed in this paper, where the Multiple FIFO based on the on-chip resources of FPGA serves as the read and write cache to(More)
A type of "signal on" displacement-based sensors named target induced signaling probe shifting DNA-based (TISPS-DNA) sensor were developed for a designated DNA detection. The signaling mechanism of the signaling probe (SP) shifting different from the classical conformation/flexibility change mode endows the sensor with high sensitivity. Through using(More)
This paper discusses the influence of materials and structures inside a package on the functioning and reliability of chip-scale-package RF-MEMS switches. It is shown that materials and structures strongly influence electrical performance characteristics such as the switching insertion loss of switches. By computer simulation design for a RF MEMS switches(More)
Based on the interaction mode of capture probe-target-signal probe (CP-T-SP), a simple but efficient electrochemical sensing method is developed for robust detection of Escherichia coli (E. coli) lac Z gene sequence. The sensing system is simply composed of two probes with CP attached to the surface of gold electrode and methylene blue (MB)-labeled SP free(More)