IEEE Transactions on Terahertz Science and Technology最新文献_第7页

Ultra-Thin Film Sensing With Terahertz Subwavelength Thin Disc Microresonators 用太赫兹亚波长薄圆盘微谐振器进行超薄膜传感

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-07 DOI: 10.1109/TTHZ.2025.3548856

Kane H.J. Hill;Dominik Walter Vogt

{"title":"Ultra-Thin Film Sensing With Terahertz Subwavelength Thin Disc Microresonators","authors":"Kane H.J. Hill;Dominik Walter Vogt","doi":"10.1109/TTHZ.2025.3548856","DOIUrl":"https://doi.org/10.1109/TTHZ.2025.3548856","url":null,"abstract":"Subwavelength thin disc terahertz microresonators have been proven to exhibit unprecedented quality factors, exceptionally low losses and extensive evanescent fields. We investigate the microresonators' potential for ultra-thin film sensing using poly(methyl methacrylate) films for a compelling proof-of-concept. Highly subwavelength thin films (<inline-formula><tex-math>$lambda$</tex-math></inline-formula>/10 000) with thicknesses of tens of nanometers were deposited atop the thin disc microresonator, each causing a pronounced frequency shift and a marked reduction in the intrinsic quality factor; these differences were measurable using a standard continuous-wave terahertz spectrometer with an added terahertz microresonator frequency reference. This demonstration benchmarks the exceptional sensitivity of thin disc terahertz microresonators, and, to our knowledge, marks the first recorded use of a whispering-gallery mode resonator for ultra-thin film sensing in the THz domain. Our findings create exciting possibilities for future applications, such as detecting ultra-thin films of sophisticated analytes.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"15 3","pages":"412-417"},"PeriodicalIF":3.9,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10916966","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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SubTHz Fully-Metallic Geodesic Luneburg Lens Antenna 次太赫兹全金属测地线吕尼堡透镜天线

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3548452

Pilar Castillo-Tapia;Shiyi Yang;Angel Palomares-Caballero;Jean-Paul Guillet;N. J. G. Fonseca;Oscar Quevedo-Teruel

{"title":"SubTHz Fully-Metallic Geodesic Luneburg Lens Antenna","authors":"Pilar Castillo-Tapia;Shiyi Yang;Angel Palomares-Caballero;Jean-Paul Guillet;N. J. G. Fonseca;Oscar Quevedo-Teruel","doi":"10.1109/TTHZ.2025.3548452","DOIUrl":"https://doi.org/10.1109/TTHZ.2025.3548452","url":null,"abstract":"We propose and validate experimentally a fully metallic geodesic Luneburg lens antenna operating in the subTHz band. The antenna produces three beams pointing at 0<inline-formula><tex-math>$^circ$</tex-math></inline-formula>, 40<inline-formula><tex-math>$^circ$</tex-math></inline-formula>, and <inline-formula><tex-math>$-$</tex-math></inline-formula>40<inline-formula><tex-math>$^circ$</tex-math></inline-formula>. To facilitate the integration, the geodesic lens is folded to reduce its height to approximately 38.7% of the original Rinehart–Luneburg lens. To reduce potential leakage resulting from manufacturing and assembly tolerances at subTHz frequencies, the waveguide feeding structure has a deliberate small air gap alongside electromagnetic bandgap structures. This enhancement aims to bolster the robustness of the antenna, ensuring stable performance even in the presence of misalignments. The results demonstrate the robustness of geodesic lenses in the subTHz regime; showing their suitability for applications that require multibeam antennas at these high frequencies. The successful performance of geodesic lenses in the subTHz regime confirms its potential for operation at higher frequencies above 300 GHz.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"15 3","pages":"514-518"},"PeriodicalIF":3.9,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10914556","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IEEE Microwave Theory and Techniques Society Information IEEE微波理论与技术学会信息

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544854

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IEEE Open Access Publishing IEEE开放获取出版

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544945

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IEEE Transactions on Terahertz Science and Technology Publication Information IEEE太赫兹科学与技术学报出版信息

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544898

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IEEE Transactions on Terahertz Science and Technology Information for Authors IEEE太赫兹科技信息汇刊

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544896

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TechRxiv: Share Your Preprint Research with the World! techxiv：与世界分享你的预印本研究！

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544936

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IEEE Women in Engineering IEEE工程女性

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-05 DOI: 10.1109/TTHZ.2025.3544914

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IEEE Women in Engineering IEEE工程女性

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-02 DOI: 10.1109/TTHZ.2025.3562711

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Applying Frequency-Wavelet Domain Deconvolution to in Vivo Terahertz Measurements of Skin Conditions 频率-小波域反卷积在体内太赫兹皮肤状况测量中的应用

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-02 DOI: 10.1109/TTHZ.2025.3566562

Benjamin G. Page;Jacob J. Young;Arturo I. Hernandez-Serrano;Joseph Hardwicke;Emma Pickwell-MacPherson

{"title":"Applying Frequency-Wavelet Domain Deconvolution to in Vivo Terahertz Measurements of Skin Conditions","authors":"Benjamin G. Page;Jacob J. Young;Arturo I. Hernandez-Serrano;Joseph Hardwicke;Emma Pickwell-MacPherson","doi":"10.1109/TTHZ.2025.3566562","DOIUrl":"https://doi.org/10.1109/TTHZ.2025.3566562","url":null,"abstract":"Eczema and psoriasis are two of the most prevalent skin conditions in the United Kingdom. Typically, diagnosis and treatment assessment are evaluated based on qualitative measures such as skin appearance and patient feedback. Thus, there is a need for a robust and quantitative method of assessing treatment efficacy and monitoring improvements in skin condition. Terahertz (THz) sensing is a promising candidate, owing to its nonionising properties and high water sensitivity. However, THz sensing is heavily reliant upon signal processing techniques, in particular deconvolution methods used to extract skin-dependent parameters. Conventionally, double Gaussian deconvolution has been used, however this has been shown to oversmooth data and cause unnecessary signal suppression. In this study, an alternative approach, known as frequency-wavelet domain deconvolution, has been applied to in vivo THz skin measurements obtained in a clinical study. It is shown that this deconvolution method significantly enhances the usable signal, and improves the accuracy of the extracted impulse response function.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"15 4","pages":"573-581"},"PeriodicalIF":3.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982400","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144550388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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