Active Two-Dimensional Steering of Radiation from a Nanoaperture

Autor: L. S. Dreissen, Taco D. Visser, Wim Ubachs, Shreyas B. Raghunathan, Hugo F. Schouten

Publikováno v: Dreissen, L S, Schouten, H F, Ubachs, W, Raghunathan, S B & Visser, T D 2018, ' Active Two-Dimensional Steering of Radiation from a Nanoaperture ', Nano Letters, vol. 18, no. 11, pp. 7207-7210 . https://doi.org/10.1021/acs.nanolett.8b03319
Nano Letters
Nano Letters, 18(11), 7207-7210. American Chemical Society

We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nano-aperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e755ba760ccd5bbe3647b65bb04b829f
https://hdl.handle.net/1871.1/6d798748-db69-4bfd-ac56-555d2e3f362d

Multiline 3D beamforming using micro-beamformed datasets for pediatric transesophageal echocardiography

Autor: Shreyas B. Raghunathan, Zhao Chen, Hendrik J. Vos, Chao Chen, Deep Bera, Verya Daeichin, Johannes G. Bosch, Michiel A. P. Pertijs, A.F.W. van der Steen, Martin D. Verweij, N. de Jong

Publikováno v: Physics in Medicine and Biology, 63(7):075015. IOP Publishing Ltd.
Physics in Medicine and Biology, 63(7)

Until now, no matrix transducer has been realized for 3D transesophageal echocardiography (TEE) in pediatric patients. In 3D TEE with a matrix transducer, the biggest challenges are to connect a large number of elements to a standard ultrasound syste

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b92e3df00fe85b861204cff11517c8c2
http://resolver.tudelft.nl/uuid:61a5c99c-9393-417c-9d94-a87659774486

Optimizing the directivity of piezoelectric matrix transducer elements mounted on an ASIC

Autor: Verya Daeichin, Hendrik J. Vos, Martin D. Verweij, Michiel A. P. Pertijs, Johannes G. Bosch, Shreyas B. Raghunathan, Maysam Shabanimotlagh, Nico de Jong, Pieter Kruizinga

Publikováno v: 2017 IEEE International Ultrasonics Symposium (IUS).

Over the last decade, clinical studies show a strong interest in real-time 3D imaging. This calls for ultrasound probes with high-element-count 2D matrix transducer arrays. These may be interfaced to an imaging system using an in-probe Application Sp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18d23f0a0e598b89995c165ce55d90c2
https://doi.org/10.1109/ultsym.2017.8091752

The role of sub-dicing in the acoustical design of an ultrasound matrix transducer for carotid arteries imaging

Autor: Michiel A. P. Pertijs, Nico de Jong, Jovana Janjic, Martin D. Verweij, Maysam Shabanimotlagh, Shreyas B. Raghunathan

Publikováno v: 2016 IEEE International Ultrasonics Symposium (IUS).

Accurate diagnostics of stenosis and blood flow distribution in carotid arteries requires transducers capable of producing 3D volume images with high frame rate for real time imaging. In the process of designing a matrix probe, an important goal is t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1227e8c01d684d9bb398a1ce903075f
https://doi.org/10.1109/ultsym.2016.7728470

A front-end ASIC with receive sub-array beamforming integrated with a 32 × 32 PZT matrix transducer for 3-D transesophageal echocardiography

Autor: Emile Noothout, Deep Bera, Zhao Chen, Christian Prins, Hendrik J. Vos, Johannes G. Bosch, Zu-yao Chang, Martin D. Verweij, Shreyas B. Raghunathan, Maysam Shabanimotlagh, Jacco Ponte, N. de Jong, Chao Chen, Michiel A. P. Pertijs

Publikováno v: VLSI Circuits

This paper presents a power- and area-efficient front-end ASIC that is directly integrated with an array of 32 × 32 piezoelectric transducer elements to enable the next-generation miniature ultrasound probes for real-time 3-D transesophageal echocar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d26c66559be2ba37c9918cd9d6d79c93
https://doi.org/10.1109/vlsic.2016.7573470