scholarly journals 2D imaging of helium ion velocity in the DIII-D divertor

2018 ◽  
Vol 25 (5) ◽  
pp. 056110 ◽  
Author(s):  
C. M. Samuell ◽  
G. D. Porter ◽  
W. H. Meyer ◽  
T. D. Rognlien ◽  
S. L. Allen ◽  
...  
Keyword(s):  
Helium Ion ◽  
2D Imaging ◽  
Ion Velocity

Magnetization dynamics of irradiation-fabricated perpendicularly magnetized dots inside a softer magnetic matrix

2003 ◽  
Vol 777 ◽  
Author(s):  
T. Devolder ◽  
M. Belmeguenai ◽  
C. Chappert ◽  
H. Bernas ◽  
Y. Suzuki
Keyword(s):  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Ion Irradiation ◽  
Magnetic Nanostructures ◽  
Magnetic Storage ◽  
Exchange Field ◽  
Static Magnetization ◽  
Specific Domain ◽  
Helium Ion

AbstractGlobal Helium ion irradiation can tune the magnetic properties of thin films, notably their magneto-crystalline anisotropy. Helium ion irradiation through nanofabricated masks can been used to produce sub-micron planar magnetic nanostructures of various types. Among these, perpendicularly magnetized dots in a matrix of weaker magnetic anisotropy are of special interest because their quasi-static magnetization reversal is nucleation-free and proceeds by a very specific domain wall injection from the magnetically “soft” matrix, which acts as a domain wall reservoir for the “hard” dot. This guarantees a remarkably weak coercivity dispersion. This new type of irradiation-fabricated magnetic device can also be designed to achieve high magnetic switching speeds, typically below 100 ps at a moderate applied field cost. The speed is obtained through the use of a very high effective magnetic field, and high resulting precession frequencies. During magnetization reversal, the effective field incorporates a significant exchange field, storing energy in the form of a domain wall surrounding a high magnetic anisotropy nanostructure's region of interest. The exchange field accelerates the reversal and lowers the cost in reversal field. Promising applications to magnetic storage are anticipated.

HIMaging the kidney: High resolution helium ion microscopy

2014 ◽  
pp. 32-35
Author(s):  
Teodor Paunescu ◽  
Sylvie Breton ◽  
Dennis Brown
Keyword(s):  
High Resolution ◽  
Helium Ion ◽  
Ion Microscopy

Large-Scale Focused Helium Ion Beam Lithography

2021 ◽  
Vol 31 (5) ◽  
pp. 1-4
Author(s):  
Jay C. LeFebvre ◽  
Shane A. Cybart
Keyword(s):  
Large Scale ◽  
Ion Beam ◽  
Ion Beam Lithography ◽  
Helium Ion

Photodissociation dynamics of AlO at 193 nm using time-sliced ion velocity imaging

2020 ◽  
Vol 33 (5) ◽  
pp. 649-652
Author(s):  
Fang-fang Li ◽  
Yu-jie Ma ◽  
Jia-xing Liu ◽  
Guan-jun Wang ◽  
Feng-yan Wang
Keyword(s):  
Velocity Imaging ◽  
Ion Velocity ◽  
193 Nm

scholarly journals BIM Supported Surveying and Imaging Combination for Heritage Conservation

2021 ◽  
Vol 13 (8) ◽  
pp. 1584
Author(s):  
Pedro Martín-Lerones ◽  
David Olmedo ◽  
Ana López-Vidal ◽  
Jaime Gómez-García-Bermejo ◽  
Eduardo Zalama
Keyword(s):  
Laser Scanning ◽  
Point Clouds ◽  
Cloud Data ◽  
Industry Foundation Classes ◽  
3D Point Clouds ◽  
Conservation Actions ◽  
Heritage Building ◽  
2D Imaging ◽  
Digital Survey ◽  
Level 2

As the basis for analysis and management of heritage assets, 3D laser scanning and photogrammetric 3D reconstruction have been probed as adequate techniques for point cloud data acquisition. The European Directive 2014/24/EU imposes BIM Level 2 for government centrally procured projects as a collaborative process of producing federated discipline-specific models. Although BIM software resources are intensified and increasingly growing, distinct specifications for heritage (H-BIM) are essential to driving particular processes and tools to efficiency shifting from point clouds to meaningful information ready to be exchanged using non-proprietary formats, such as Industry Foundation Classes (IFC). This paper details a procedure for processing enriched 3D point clouds into the REVIT software package due to its worldwide popularity and how closely it integrates with the BIM concept. The procedure will be additionally supported by a tailored plug-in to make high-quality 3D digital survey datasets usable together with 2D imaging, enhancing the capability to depict contextualized important graphical data to properly planning conservation actions. As a practical example, a 2D/3D enhanced combination is worked to accurately include into a BIM project, the length, orientation, and width of a big crack on the walls of the Castle of Torrelobatón (Spain) as a representative heritage building.

Quantum dot formation on suspended graphene nanomesh by helium ion beam milling technology

2021 ◽  
Author(s):  
Fayong Liu ◽  
Manoharan Muruganathan ◽  
Shinichi Ogawa ◽  
Yukinori Morita ◽  
Zhongwang Wang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Ion Beam ◽  
Suspended Graphene ◽  
Helium Ion ◽  
Graphene Nanomesh
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