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Interdigitated terahertz metamaterial sensors:design with the dielectric perturbation theory

photonics Research 2024年第6期12卷 1115-1128页

作者： LEI CAO FANQI MENG ESRAÖZDEMIR YANNIK LOTH MERLE RICHTER ANNA KATHARINA WIGGER maira beatriz pérez sosa ALAA JABBAR JUMAAH SHIHAB AL-DAFFAIE pETER HARING BOLÍVAR HARTMUT G.ROSKOS State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and TechnologyWuhan 430074China physikalisches Institut Johann Wolfgang Goethe-UniversitätFrankfurt am MainGermany University of Siegen Institute for High Frequency and Quantum ElectronicsSiegenGermany Department of Electrical Engineering Eindhoven University of Technology5612 AE EindhovenThe Netherlands

Designing terahertz sensors for highly sensitive detection of nanoscale thin films and a few biomolecules poses a substantial challenge but is crucial for unlocking their full potential in scientific research and advanced *** work presents a strategy for optimizing metamaterial sensors in detecting small quantities of dielectric *** amount of frequency shift depends on intrinsic properties(electric field distribution,Q-factor,and mode volume)of the bare cavity as well as the overlap volume of its high-electric-field zone(s)and the *** by the simplified dielectric perturbation theory,interdigitated electric split-ring resonators(ID-eSRRs)are devised to significantly enhance the detection sensitivity compared with eSRRs without interdigitated ***-eSRR’s fin-gers redistribute the electric field,creating strongly localized enhancements,which boost analyte *** periodic change of the inherent antiphase electric field reduces radiation loss,leading to a higher *** with ID-eSRR sensors operating at around 300 GHz demonstrate a remarkable 33.5 GHz frequency shift upon depositing a 150 nm SiO_(2)layer as an analyte simulant,with a figure of merit improvement of over 50 times compared with structures without interdigitated *** rational design offers a promising avenue for highly sensitive detection of thin films and trace biomolecules.

关键词： dielectric perturbation theory

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patterns of Interactions of the Complex City System:Emotional Urban Objects as Triggering Agents-A Secondary publication

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Journal of World Architecture 2024年第1期8卷 45-53页

作者： O.A.Gonzalez Liliana beatriz sosa Compeán Autonomous University of Nuevo Leon San Nicolás de los Garza 66455Mexico

This article presents an analysis of the patterns of interactions resulting from the positive and negative emotional events that occur in cities,considering them as complex *** explores,from the imaginaries,how certain urban objects can act as emotional agents and how these events affect the urban system as a *** adaptive complex systems perspective is used to analyze these *** results show patterns in the processes and dynamics that occur in cities based on the objects that affect the emotions of the people who live *** patterns depend on the characteristics of the emotional charge of urban objects,but they can be generalized in the following process:(1)immediate reaction by some individuals;(2)emotions are generated at the individual level which begins to generalize,permuting to a collective emotion;(3)a process of reflection is detonated in some individuals from the reading of collective emotions;(4)integration/significance in the community both at the individual and collective level,on the concepts,roles and/or functions that give rise to the process in the ***,it is clear that emotions play a significant role in the development of cities and these aspects should be considered in the design strategies of all kinds of projects for the *** extensions of this work could include a deeper analysis of specific emotional events in urban environments,as well as possible implications for urban policy and decision making.

关键词： Emotional events Urban objects Complex adaptive systems Adaptive complex systems City

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Fretting Fatigue Evaluation produced by A New Vertical Machine

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材料科学与工程（中英文版） 2010年第2期4卷 26-38页

作者： GuiUermo Urriolagoitia-sosa Guillermo Urriolagoitia-Calderon Luis Hector Hemaindez-Gomez beatriz Romero-Angeles Secci6n de Estudios de posgrado e lnvestigacion Escuela Superior de lngenieria Mecanica y Electrica lnstituto Politecnico Nacional Unidad Profesional Adolfo Lopez Mateos 5th Building 2nd Floor Lindavista CP 07738 Gustavo A. Madero Mexico D F. Mexico.

It has been well documented in the open literature that fretting fatigue tests are generally performed on machines with horizontal configuration. This kind of configuration has the problem of misalignment between the actuator and the specimen. The misalignment generally occurs on the support of the actuator, which is held by a solid bar in a cantilever beam configuration, caused by the fretting fatigue effect. The present work describes the design and construction of a new vertical fretting fatigue machine. The intention of this work is to solve the misalignment problem observed in the horizontal configuration and to explore the advantages and disadvantages offered by the vertical configuration. In this work, uni-axial and fretting fatigue experiments were run to evaluate the performance of the new apparatus and all the fretting tests were done in a partial slip regime, so that the relative displacement within the contact could be calculated. Furthermore, in this research the damage caused by the relative slip fretting was investigated and the performance of the new vertically mounted coaxial fretting fatigue machine was assessed. The results with compared were those obtained in a horizontal configuration machine and have provided complete confidence on the new design.

关键词：微动疲劳疲劳评价加工生产疲劳试验机立式悬臂梁结构垂直式相对位移

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