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   Articles with "archimedean spiral" as a keyword



Self‐Sensing Archimedean Spiral Artificial Muscle Fibers with Bidirectional Actuation for Electromagnetic Wave/Light Modulation and Mechanical Display

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recommendations! Published in 2025 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202519002

Abstract: The coiled structure acts as a performance “amplifier” role in linearly contracted artificial muscle fibers. However, the fiber contraction is limited when adjacent coils are in contact, and integrating the self‐sensing function after further increasing… read more here.

Keywords: self sensing; muscle fibers; actuation; muscle ... See more keywords

Ultrawideband, high-gain, high-efficiency, circularly polarized Archimedean spiral antenna

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recommendations! Published in 2019 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2019.07.006

Abstract: Abstract This paper presents an ultrawideband (UWB) circularly polarized (CP) two-arm Archimedean spiral antenna with unidirectional radiation patterns. The antenna is directly fed by a 50-Ω coaxial cable and reflected by a circular cavity. The… read more here.

Keywords: archimedean spiral; spiral antenna; circularly polarized; efficiency ... See more keywords

Facial Asymmetry in the Helical Grooves of Chiral Helical Polymers to Create 2D Single-Chain Archimedean Spiral Nanostructures

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recommendations! Published in 2025 at "ACS Nano"

DOI: 10.1021/acsnano.5c10476

Abstract: Archimedean spirals are architectural motifs that are found in nature. The facial asymmetry of amphiphilic molecules or macromolecules has been a key parameter in the preparation of these well-organized two-dimensional nanostructures in the laboratory. This… read more here.

Keywords: helical grooves; facial asymmetry; archimedean spiral; polymer ... See more keywords

Split Archimedean spiral metasurface for controllable GHz asymmetric transmission

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recommendations! Published in 2019 at "Applied Physics Letters"

DOI: 10.1063/1.5084329

Abstract: A chiral metasurface, which obtains chirality through a subwavelength artificial structure, is essential for realizing asymmetric transmission in the application of enantioselective sensing, spin-dependent light emission, and other polarization control systems. Here, we studied a… read more here.

Keywords: archimedean spiral; transmission; spiral metasurface; asymmetric transmission ... See more keywords

Compact Circularly Polarized Archimedean Spiral Antenna for Ultrawideband Communication Applications

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recommendations! Published in 2017 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2016.2560258

Abstract: A novel compact circularly polarized Archimedean spiral antenna for ultrawideband (UWB) communication applications is presented. The basic structure is a two-arm planar Archimedean spiral antenna, which is fed by a tapered wideband balun. These two… read more here.

Keywords: archimedean spiral; spiral antenna; compact circularly; communication applications ... See more keywords
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Cavity-Backed Archimedean Spiral Antenna with Conical Perturbations for 3U CubeSat Applications [Education Corner]

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recommendations! Published in 2018 at "IEEE Antennas and Propagation Magazine"

DOI: 10.1109/map.2018.2870586

Abstract: This article reports the development of a CubeSat antenna for the 2017 IEEE Antennas and Propagation Society (AP-S) Student Design Contest by an interdisciplinary team of undergraduate and graduate students from the Electrical and Aerospace… read more here.

Keywords: archimedean spiral; backed archimedean; cavity backed; conical perturbations ... See more keywords

High-resolution optical orbital angular momentum sorter based on Archimedean spiral mapping.

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recommendations! Published in 2022 at "Optics express"

DOI: 10.1364/oe.455987

Abstract: We propose a generalized spiral transformation scheme that is versatile to incorporate various types of spirals such as the Archimedean spiral and the Fermat spiral. Taking advantage of the equidistant feature, we choose the Archimedean… read more here.

Keywords: optical orbital; spiral mapping; high resolution; resolution optical ... See more keywords