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Concept

Small-angle approximation

Related publications (8)

Moire Flat Bands in Twisted Double Bilayer Graphene

Oleg Yazyev, Quansheng Wu, Seyedeh Fatemeh Haddadi Givi

We investigate twisted double bilayer graphene (TDBG), a four-layer system composed of two AB-stacked graphene bilayers rotated with respect to each other by a small angle. Our ab initio band structure calculations reveal a considerable energy gap at the c ...

AMER CHEMICAL SOC2020

In Situ Liquid SAXS Studies on the Early Stage of Calcium Carbonate Formation

Andrea Testino, Agnese Carino, Mohammad Reza Andalibi

Calcium carbonate is a model system to investigate the mechanism of solid formation by precipitation from solutions, and it is often considered in the debated classical and nonclassical nucleation mechanism. Despite the great scientific relevance of calciu ...

2019

Apparatus for imaging a page of a book or other similar document

Martin Vetterli, Loïc Arnaud Baboulaz

The present invention relates to an apparatus for imaging a page of a book or other similar document comprising: - a table defining a support plane, the book being disposed on the table such that the page to image is substantially parallel to the support p ...

2017

Optical prism for creating multiple views of an image

Theo Lasser, Marcel Leutenegger

Optical prism comprising two external parallel and reflecting surfaces, one internal interface, parallel to said surfaces and acting as light splitter; said prism furthermore comprising an entrance side forming an angle β with respect to said interface and ...

2016

Multi-segment analysis of spinal kinematics during sit-to-stand in patients with chronic low back pain

Julien Favre

While alterations in spinal kinematics have been frequently reported in patients with chronic low back pain (CLBP), a better characterization of the kinematics during functional activities is needed to improve our understanding and therapeutic solutions fo ...

Elsevier Sci Ltd2016

A Comparison Between Joint Coordinate System and Attitude Vector for Multi-segment foot Kinematics

Kamiar Aminian, Julien Favre, Hossein Rouhani, Xavier Crevoisier

The joint angles of multi-segment foot models have been primarily described using two mathematical methods: the joint coordinate system and the attitude vector. This study aimed to determine whether the angles obtained through these two descriptors are com ...

Elsevier2012

Measurement of the running of the electromagnetic coupling at large momentum-transfer at LEP

Qian Wang, Zhirui Xu, Aurelio Bay, Liang Sun, Horst Arthur Vogel, Jian Zhao, Eduardo Sanchez

The evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2 < -Q2 < 21600 GeV2 is studied with about 40 000 Bhabha-scattering events collected with the L3 detector at LEP at centre-of-mass energies √s = 189-209 GeV. The runni ...

2005

12C(n, n), (n, n') and (n, n') 3a reactions at 14.1 MeV

The 12C(n, n), (n, n') and (n, n') 3 α reactions have been studied at 14.1 MeV by a time-of-flight method, with a scintillating scatterer. The angular distributions and integrated cross sections were obtained for the following channels: Q = 0 (0+) and -4.4 ...

s.n.1969