Concept

Spirale d'Archimède

Publications associées (12)

Ultra-compact spoof surface plasmon polariton waveguides and notch filters based on double-sided parallel-strip lines

In this paper, we propose a new variety of strong field confinement, ultra-compact size, easy-to-integrate spoof surface plasmon polariton (SSPP) waveguides based on double-sided parallel-strip lines (DSPSL), which are formed by etching opposite spiral gro ...

2020

Segmented Spiral Using Inter-Connected Timber Elements

Yves Weinand, Petras Vestartas, Aryan Rezaei Rad, Martin Thomas Nakad, Loïc Henri Pelletier

This paper describes the construction process of a scenographic structure - five meters high spiral. It consists of following parts: CAD modeling work-flow, prototyping and FEM structural calculation, assembly and on-site loading test. The structure was co ...

INT CENTER NUMERICAL METHODS ENGINEERING2019

Segmented Spiral Using Inter-Connected Timber Elements

Yves Weinand, Petras Vestartas, Aryan Rezaei Rad, Martin Thomas Nakad, Loïc Henri Pelletier

This paper describes the construction process of a scenographic structure five meters high spiral. It consists of following parts: CAD modeling workflow, prototyping and FEM structural calculation, assembly and on-site loading test. The structure was compo ...

IASS2019

Segmented Spiral using Inter-Connected Timber Elements

Yves Weinand, Petras Vestartas, Aryan Rezaei Rad, Anh Chi Nguyen, Martin Thomas Nakad, Loïc Henri Pelletier

This paper describes the design, fabrication, and construction process of a scenography structure representing a five-meter height spiral made out of 3-ply crosslaminated panels. The structure includes 29 timber boxes. Typical through-tenon wood-wood joi ...

2019

Performance potential of gas foil thrust bearings enhanced with spiral grooves

Jürg Alexander Schiffmann, Eliott Philippe Guenat

The upscaling of turbomachinery using gas foil thrust bearings is limited because of their limited load capacity and the thermal issues linked with very thin film thickness. The improvement potential of spiral grooves manufactured on the top-foil of such b ...

2019

Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature

In insulating materials with ordered magnetic spiral phases, ferroelectricity can emerge owing to the breaking of inversion symmetry. This property is of both fundamental and practical interest, particularly with a view to exploiting it in low-power electr ...

AMER ASSOC ADVANCEMENT SCIENCE2018

Spiral spin-liquid and the emergence of a vortex-like state in MnSc2S4

Jonathan White, Gregory Scott Tucker, Romain Sibille, Shang Gao

Spirals and helices are common motifs of long-range order in magnetic solids, and they may also be organized into more complex emergent structures such as magnetic skyrmions and vortices. A new type of spiral state, the spiral spin-liquid, in which spins f ...

Nature Publishing Group2017

Testing and modelling of a novel oil-free co-rotating scroll machine with water injection

Jürg Alexander Schiffmann, Luis Carlos Mendoza Toledo

Efficient compressed air energy storage requires reversible isothermal compression and expansion devices. The isothermal compression and expansion processes can either be approached by several stages with intercooling or by the more convenient injection of ...

Elsevier2017

ASTErIsM: application of topometric clustering algorithms in automatic galaxy detection and classification

Jean-Paul Richard Kneib, Frédéric Courbin, Danuta Janina Paraficz

We present a study on galaxy detection and shape classification using topometric clustering algorithms. We first use the DBSCAN algorithm to extract, from CCD frames, groups of adjacent pixels with significant fluxes and we then apply the DENCLUE algorithm ...

Oxford Univ Press2016

Viewpoint: Slowing Continuous Molecular Beams in a Rotating Spiral

Andreas Osterwalder

A new approach to the continuous deceleration of polar molecules uses a rotating guide to slow the molecules down. ...

2014

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