scholarly journals Developments and Recent Progresses in Microwave Impedance Microscope

2020 ◽  
Vol 8 ◽  
Author(s):  
Zhaoqi Zhong ◽  
Xiaolong Chen ◽  
Xing Quan ◽  
Huiting Huan ◽  
Fushun Nian ◽  
...  
Keyword(s):  
Near Field ◽  
Microwave Measurement ◽  
Basic Principles ◽  
Microwave Microscopy ◽  
Quantitative Measurements ◽  
Capacitance Variation ◽  
Low Emission ◽  
The Common ◽  
Instrument Configuration ◽  
Mim Technology

Microwave impedance microscope (MIM) is a near-field microwave technology which has low emission energy and can detect samples without any damages. It has numerous advantages, which can appreciably suppress the common-mode signal as the sensing probe separates from the excitation electrode, and it is an effective device to represent electrical properties with high spatial resolution. This article reviews the major theories of MIM in detail which involve basic principles and instrument configuration. Besides, this paper summarizes the improvement of MIM properties, and its cutting-edge applications in quantitative measurements of nanoscale permittivity and conductivity, capacitance variation, and electronic inhomogeneity. The relevant implementations in recent literature and prospects of MIM based on the current requirements are discussed. Limitations and advantages of MIM are also highlighted and surveyed to raise awareness for more research into the existing near-field microwave microscopy. This review on the ongoing progress and future perspectives of MIM technology aims to provide a reference for the electronic and microwave measurement community.

scholarly journals Microwave Microscopy and Its Applications

2020 ◽  
Vol 50 (1) ◽  
pp. 105-130 ◽  
Author(s):  
Zhaodong Chu ◽  
Lu Zheng ◽  
Keji Lai
Keyword(s):  
Domain Walls ◽  
Materials Science ◽  
Near Field ◽  
Data Interpretation ◽  
General Purpose ◽  
Topological Order ◽  
Microwave Frequencies ◽  
Microwave Microscopy ◽  
Quantitative Measurements ◽  
Materials Research

Understanding the nanoscale electrodynamic properties of a material at microwave frequencies is of great interest for materials science, condensed matter physics, device engineering, and biology. With specialized probes, sensitive detection electronics, and improved scanning platforms, microwave microscopy has become an important tool for cutting-edge materials research in the past decade. In this article, we review the basic components and data interpretation of microwave imaging and its broad range of applications. In addition to the general-purpose mapping of permittivity and conductivity, microwave microscopy is now exploited to perform quantitative measurements on semiconductor devices, photosensitive materials, ferroelectric domains and domain walls, and acoustic-wave systems. Implementation of the technique in low-temperature and high-magnetic-field chambers has also led to major discoveries in quantum materials with strong correlation and topological order. We conclude the review with an outlook of the ultimate resolution, operation frequency, and future industrial and academic applications of near-field microwave microscopy.

scholarly journals Improvement of spatial resolution by tilt correction in near-field scanning microwave microscopy

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035114
Author(s):  
Xianfeng Zhang ◽  
Zhe Wu ◽  
Quansong Lan ◽  
Zhiliao Du ◽  
Quanxin Zhou ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Near Field ◽  
Tilt Correction ◽  
Microwave Microscopy ◽  
Scanning Microwave Microscopy ◽  
Near Field Scanning

Microwave Absorbing Ferrite Thin Films for Microwave Heating of Microstructured Reactors

2009 ◽  
Vol 1222 ◽  
Author(s):  
Pengzhao Gao ◽  
Evgeny V. Rebrov ◽  
Jaap C. Schouten ◽  
Richard Kleismit ◽  
John Cetnar ◽  
...  
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Microwave Heating ◽  
Near Field ◽  
Coplanar Waveguide ◽  
Sol Gel ◽  
Microwave Cavity ◽  
Silicon Substrates ◽  
Microwave Microscopy ◽  
Zn Ferrite

AbstractNanocrystalline Ni0.5Zn0.5Fe2O4 thin films have been synthesized with various grain sizes by sol–gel method on polycrystalline silicon substrates. The morphology and microwave absorption properties of the films calcined in the 673–1073 K range were studied by using XRD, AFM, near–field evanescent microwave microscopy, coplanar waveguide and direct microwave heating measurements. All films were uniform without microcracks. The increase of the calcination temperature from 873 to 1073 K and time from 1 to 3h resulted in an increase of the grain size from 12 to 27 nm. The complex permittivity of the Ni-Zn ferrite films was measured in the frequency range of 2–15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315–355 K was observed in the film close to the critical grain size of 21 nm in diameter marked by the transition from single– to multi–domain structure of nanocrystals in Ni0.5Zn0.5Fe2O4 film and by a maximum in its coercivity.

scholarly journals STOCK MARKET INVESTORS MECHANICS AND THEIR BLUNDERS

2016 ◽  
Vol 4 (2) ◽  
pp. 243-249
Author(s):  
Ravi Kumar ◽  
Rohini Sajjan
Keyword(s):  
Stock Market ◽  
Basic Principles ◽  
The Common ◽  
Stock Market Investors

Investment mistakes happen for a multitude of reasons, including the fact that decisions made under conditions of uncertainty that are irresponsibly downplayed by market gurus and institutional spokespersons.  Losing money on an investment may not be the result of a mistake, and not all mistakes result in monetary losses. But errors occur when judgment is unduly influenced by emotions, when the basic principles of investing are misunderstood, and when misconceptions exist about how securities react to varying economic, political, and hysterical circumstances. Proper planning and using of techniques, strategies can come as rescue to the investor and help in reaping profits and avoiding the blunders that are commonly observed. The paper investigates the basis for investment patter by the investor, their techniques and strategies adopted and guidelines to be followed to avoid the common blunders made by them leading to fewer losses they would face otherwise.

scholarly journals How Interdependence Explains the World of Teamwork

2021 ◽  
pp. 122-146
Author(s):  
Matthew Johnson ◽  
Jeffrey M. Bradshaw
Keyword(s):  
Common Factor ◽  
Theoretical Framework ◽  
Experimental Results ◽  
Coherent System ◽  
Basic Principles ◽  
The World ◽  
The Common ◽  
Machine Systems ◽  
Moving Parts

AbstractCurrent attempts to understand human-machine systems are complex and unwieldy. Multiple disciplines throw different concepts and constructs at the problem, but there is no agreed-to framework to assemble these interrelated moving parts into a coherent system. We propose interdependence as the common factor that unifies and explains these moving parts and undergirds the different terms people use to talk about them. In this chapter, we will describe a sound and practical theoretical framework based on interdependence that enables researchers to predict and explain experimental results in terms of interlocking relationships among well-defined operational principles. Our exposition is not intended to be exhaustive, but instead aims to describe the basic principles in a way that allows the gist to be grasped by a broad cross-disciplinary audience through simple illustrations.

Imaging of Magnetic Excitations in Nanostructures with Near-Field Microwave Microscopy

2021 ◽  
pp. 168870
Author(s):  
Samuel Berweger ◽  
Robert Tyrell-Ead ◽  
Houchen Chang ◽  
Mingzhong Wu ◽  
Na Zhu ◽  
...  
Keyword(s):  
Near Field ◽  
Magnetic Excitations ◽  
Microwave Microscopy

Positive Psychology Competences of Pre-School Teachers as a Tool for Understanding and Nurturing Children's Play

2017 ◽  
pp. 134-152 ◽  
Author(s):  
Sanja Tatalović Vorkapić ◽  
Petra Prović
Keyword(s):  
Positive Psychology ◽  
Natural Environment ◽  
Common Ground ◽  
Preschool Teachers ◽  
Future Research ◽  
Basic Principles ◽  
Children's Play ◽  
Research And Practice ◽  
Children’S Play ◽  
The Common

The Positive Psychology frame and definition present a natural environment for understanding and researching children's play in the context of nurturing overall positive characteristics in children's development. Therefore, this article presents a structured review of the common ground between the basic principles of positive psychology and children's play in the context of early and preschool institutions. Also, it demonstrates the implementation of positive psychology principles in children's play and the methods by which positive psychology could be promoted through children's play in kindergartens. Within that frame, the importance is given to the needed preschool teachers' competences in this area. In this context, various activities are presented that reflect a common ground of positive psychology and children's play. Finally, some significant guidelines for future research and practice enhancement are presented.

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