Electrosynthesis of Magnetostrictive Nanosensor Array

2005 ◽  
Vol 900 ◽  
Author(s):  
Suiqiong Li ◽  
Lisa Orona ◽  
Liling Fu ◽  
Z.-Y. Cheng
Keyword(s):  
Thin Films ◽  
Hysteresis Loop ◽  
Electrochemical Deposition ◽  
Coercive Field ◽  
High Performance ◽  
Fabrication Process ◽  
Resonance Behavior ◽  
Sensor Platform ◽  
Magnetization Hysteresis Loop ◽  
Length Direction

ABSTRACTMagnetostrictive nanobars as sensor platform were induced. Based on the resonance behavior of strips made from thin films, it is identified that the amorphous Fe-B alloy is a good candidate for fabricating high performance sensor platform. The fabrication process of amorphous Fe-B nanobars using electrochemical deposition is reported. The magnetization hysteresis loop of Fe-B nanobars with the diameters of 50, 100 and 200 nm, respectively, was characterized. It is found that, for all nanobars, the coercive field measured along length direction is smaller than the coercive field measured perpendicular to length direction. The physics behind the phenomena is discussed.

Development of Novel Magnetostrictive Fe-Co-B Thin Films as a High Frequency Sensor Platform

2015 ◽  
Vol 1720 ◽  
Author(s):  
Zhizhi Sheng ◽  
Z.-Y. Cheng
Keyword(s):  
Thin Films ◽  
High Frequency ◽  
Deposition Time ◽  
Nanocrystalline Structure ◽  
Deposition Condition ◽  
Potential Candidate ◽  
Q Value ◽  
Resonance Behavior ◽  
Frequency Sensor ◽  
Sensor Platform

ABSTRACTFe-Co-B was identified as a potential candidate for the development of high-frequency sensors and high-frequency actuators. To fabricate high-frequency magnetostrictive resonators, Fe-Co-B magetostrictive thin films were prepared by combining electrochemical deposition and microfabrication processes. It is crucial to obtain thin films with proper microstructure and composition. Results showed that Fe-rich Fe-Co-B thin films exhibited better resonance behavior than those with Co-rich and equiatomic Fe and Co compositions. It is also found that the deposition condition plays an important role on the performance of the films. Fe55Co28B17 thin films were fabricated under the same current density for different times. The films exhibited nanocrystalline structure, circular nodules as surface morphology and good resonance behavior. Fe/Co ratio on surface and cross section slightly decreased with increasing the deposition time. The resonance frequency slightly increased and the Q value was found to decrease with increasing deposition time.

Influence of the Waveform and DC Offset on the Asymmetric Hysteresis Loop in Au/PZT/Pt/Al2O3/SiO2/Si Thin Films Prepared by MOCVD Method

2013 ◽  
Vol 467 ◽  
pp. 155-159
Author(s):  
Masruroh
Keyword(s):  
Thin Films ◽  
Hysteresis Loop ◽  
Coercive Field ◽  
Bottom Electrode ◽  
Wave Type ◽  
Peak Voltage ◽  
Dc Offset

In this paper, the hysteresis loop of Au/PZT/Pt/Al2O3/SiO2/Si thin films was experimentally measured in different conditions as a waveform and a DC offset, using a precision LC Radiant technology RT-66. The measurements were taken by applying a drive to the Pt bottom electrode connected to the drive of the precision LC and the Au top electrode was connected to the drive of the precision LC. The waveform was applied as wave type = sine; peak voltage = 6 V; frequency = 1 KHz and duration = 100 s. The results show that, by applying waveform and DC offset the hysteresis loop softly changes the polarization (Pr) and coercive field (Vc).

Magnetostrictive Microcantilever as Micro-Biosensor Platform

2004 ◽  
Vol 855 ◽  
Author(s):  
Suiqiong Li ◽  
Zhimin Li ◽  
Lisa Orona ◽  
Z.-Y. Cheng
Keyword(s):  
Theoretical Calculation ◽  
High Performance ◽  
The State ◽  
Yeast Cells ◽  
Q Value ◽  
Resonance Behavior ◽  
Merit Factor ◽  
Sensor Platform ◽  
State Of Art

ABSTRACTIn this paper, a novel micro-biosensor platform - magnetostrictive microcantilever (MSMC) - is reported. The resonance behavior and the sensitivity of MSMC as sensor platform were characterized and compared to the theoretical calculation. The detection of yeast cells using the biosensor made of MSMC was reported. The results demonstrate the feasibility of MSMC as a high performance biosensor platform. Compare to current microcantilevers, which is widely considered as the state-of-art sensor platform, the MSMCs have following advantages: 1) remote/wireless driving and sensing; 2) easy to fabricate. More importantly, it is experimentally found that the quality merit factor (Q value) of MSMC can reach more than 250, which is much higher than other cantilevers.

scholarly journals High performance, electroforming-free, thin film memristors using ionic Na0.5Bi0.5TiO3

2021 ◽  
Vol 9 (13) ◽  
pp. 4522-4531
Author(s):  
Chao Yun ◽  
Matthew Webb ◽  
Weiwei Li ◽  
Rui Wu ◽  
Ming Xiao ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Resistive Switching ◽  
Growth Temperature ◽  
High Performance ◽  
20 Nm

Interfacial resistive switching and composition-tunable RLRS are realized in ionically conducting Na0.5Bi0.5TiO3 thin films, allowing optimised ON/OFF ratio (>104) to be achieved with low growth temperature (600 °C) and low thickness (<20 nm).

In-situ growth of high-performance (Ag, Sn) co-doped CoSb3 thermoelectric thin films

2021 ◽  
Author(s):  
Zhuang-Hao Zheng ◽  
Jun-Yun Niu ◽  
Dong-Wei Ao ◽  
Bushra Jabar ◽  
Xiao-Lei Shi ◽  
...  
Keyword(s):  
Thin Films ◽  
High Performance ◽  
In Situ Growth ◽  
Thermoelectric Thin Films ◽  
Co Doped

Depositing High-Performance Conductive Thin Films by Using Atomic Layer Deposition

2015 ◽  
Vol 764-765 ◽  
pp. 138-142 ◽  
Author(s):  
Fa Ta Tsai ◽  
Hsi Ting Hou ◽  
Ching Kong Chao ◽  
Rwei Ching Chang
Keyword(s):  
Thin Films ◽  
Atomic Layer Deposition ◽  
High Performance ◽  
Atomic Layer ◽  
Electric Properties ◽  
X Ray Diffraction ◽  
Layer Deposition ◽  
Azo Thin Film ◽  
Aluminum Doped Zinc Oxide ◽  
Conductive Thin Films

This work characterizes the mechanical and opto-electric properties of Aluminum-doped zinc oxide (AZO) thin films deposited by atomic layer deposition (ALD), where various depositing temperature, 100, 125, 150, 175, and 200 °C are considered. The transmittance, microstructure, electric resistivity, adhesion, hardness, and Young’s modulus of the deposited thin films are tested by using spectrophotometer, X-ray diffraction, Hall effect analyzer, micro scratch, and nanoindentation, respectively. The results show that the AZO thin film deposited at 200 °C behaves the best electric properties, where its resistance, Carrier Concentration and mobility reach 4.3×10-4 Ωcm, 2.4×1020 cm-3, and 60.4 cm2V-1s-1, respectively. Furthermore, microstructure of the AZO films deposited by ALD is much better than those deposited by sputtering.

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