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In this work some possible applications of negative permeability magnetic metamaterial lenses for magnetic resonance imaging (MRI) are analyzed. Metamaterials are artificial composites designed to have a given permittivity and/or…

Medical Physics · Physics 2015-05-14 Manuel J. Freire , Lukas Jelinek , Ricardo Marques

Potential core materials to supersede ferrite in the 0.5-10 MHz frequency range are investigated. The performance of electrodeposited nickel-iron, cobalt-iron-copper alloys and the commercial alloy Vitrovac 6025 have been assessed through…

Other Computer Science · Computer Science 2008-12-18 D. Flynn , Marc Desmulliez

High entropy alloys (HEAs) are multi-principal-element alloys designed for tailorable mechanical performance and have been attracting significant engineering interest, yet their fundamental behaviour under extreme dynamic conditions, such…

Magnesium (Mg) alloys have shown great prospects as both structural and biomedical materials, while poor corrosion resistance limits their further application. In this work, to avoid the time-consuming and laborious experiment trial, a…

Materials Science · Physics 2022-01-25 Yaowei Wang , Tian Xie , Qingli Tang , Mingxu Wang , Tao Ying , Hong Zhu , Xiaoqin Zeng

Deflection behavior of several encapsulant materials under uniform pressure was studied to determine the best encapsulant for MEMS device. Encapsulation is needed to protect movable parts of MEMS devices during high pressure transfer molded…

Other Computer Science · Computer Science 2008-02-22 A. A. Hamzah , Y. Husaini , Y. Husaini , B. Y. Majlis , I. Ahmad

Low-energy medium-luminosity Muon Collider (MC) is being studied as a possible Higgs Factory (HF). Electrons from muon decays will deposit more than 300 kW in superconducting magnets of the HF collider ring. This imposes significant…

Accelerator Physics · Physics 2018-11-14 N. V. Mokhov , V. V. Kashikhin , S. I. Striganov , I. S. Tropin , A. V. Zlobin

A muon collider or Higgs factory requires significant reduction of the six dimensional emittance of the beam prior to acceleration. One method to accomplish this involves building a cooling channel using high pressure gas filled radio…

The RIBLL2 in-flight separator at IMP, the secondary beam line between two storage rings at the \blue{\uwave{Heavy Ion Research Facility in Lanzhou (HIRFL-CSR)}}, has been commissioned to study the rare-isotope beam (RIB) physics at around…

High TC fully compensated ferrimagnets are potential candidates for spin transfer torque based spintronic devices. We report the structural and magnetic properties of high TC fully compensated ferrimagnets Mn2V0.5Co0.5Z where Z is Ga, Al,…

Materials Science · Physics 2018-12-04 P V Midhunlal , J Arout Chelvane , D Prabhu , Raghavan Gopalan , Harish Kumar N

In 2008, the Cornell Electron Storage Ring (CESR) was reconfigured to serve as a test accelerator (CESR-TA) for next generation lepton colliders, in particular for the ILC damping ring. A significant part of this program has been the…

Accelerator Physics · Physics 2015-06-18 J. R. Calvey , W. Hartung , Y. Li , J. A. Livezey , J. Makita , M. A. Palmer , D. Rubin

The work presents experimental results of precision magnetoresistance dr(H,T) measurements obtained for canonical heavy fermion compounds CeAl2, CeAl3, CeCu6 and substitutional solid solutions CeCu6-xAux (x=0.1 and 0.2) and Ce(Al0.95M0.05)2…

Strongly Correlated Electrons · Physics 2007-05-23 N E Sluchanko , A V Bogach , V V Glushkov , S V Demishev , N A Samarin , G S Burhanov , O D Chistiakov , D N Sluchanko

A survey of molecular cores covering the infrared dark cloud known as the M17 southwest extension (M17 SWex) has been carried out with the 45 m Nobeyama Radio Telescope. Based on the N2H+ (J= 1-0) data obtained, we have identified 46…

Astrophysics of Galaxies · Physics 2019-07-17 Tomomi Shimoikura , Kazuhito Dobashi , Asha Hirose , Fumitaka Nakamura , Yoshito Shimajiri , Koji Sugitani

Recent discovery of a Higgs boson boosted interest in a low-energy medium-luminosity Muon Collider as a Higgs Factory (HF). A preliminary design of the HF storage ring (SR) is based on cos-theta Nb3Sn superconducting (SC) magnets with the…

Anatomy-specific RF receive coil arrays routinely adopted in magnetic resonance imaging (MRI) for signal acquisition, are commonly burdened by their bulky, fixed, and rigid configurations, which may impose patient discomfort, bothersome…

Medical Physics · Physics 2023-12-21 Ke Wu , Xia Zhu , Stephan W. Anderson , Xin Zhang

In this work a mu=-1 metamaterial (MM) lens for magnetic resonance imaging (MRI) is demonstrated. MRI uses surface coils to detect the radiofrequency(RF) energy absorbed and emitted by the nuclear spins in the imaged object. The proposed MM…

Medical Physics · Physics 2009-11-13 Manuel J. Freire , Ricardo Marques , Lukas Jelinek

In this work, high throughput DFT calculations are performed on the alkali metal-based half Heusler alloys; LiY$_p$Y$^\prime_{1-p}$S (Y, Y$^\prime$ = V, Cr, Mn, Fe, Co, Ni and $\mathit{p}$ = 0, 0.25, 0.5, 0.75, 1). Starting with 243…

Materials Science · Physics 2022-03-23 Rohit Pathak , Parul R. Raghuvanshi , Amrita Bhattacharya

The maximum coercivity that can be achieved for a given hard magnetic alloy is estimated by computing the energy barrier for the nucleation of a reversed domain in an idealized microstructure without any structural defects and without any…

A low background double-wall piston-cylinder-type pressure cell is developed at the Paul Scherrer Institute. The cell is made from BERLYCO-25 (beryllium copper) and MP35N nonmagnetic alloys with the design and dimensions which are…

Materials Science · Physics 2017-09-15 Z. Shermadini , R. Khasanov , M. Elender , G. Simutis , Z. Guguchia , K. V. Kamenev , A. Amato

First-principles calculations are used to gauge different levels of approximation to calculate the magnetocrystalline anisotropy energies (MAE) of five $L1_0$ FeMe alloys (Me=Co, Cu, Pd, Pt, Au). We find that a second-order perturbation…

Materials Science · Physics 2020-12-14 M. Blanco-Rey , J. I. Cerda , A. Arnau

Carbon-doped magnesium diboride was fabricated from pre-reacted pure MgB2 by mechanical alloying. The sample set had excellent critical current densities Jc(8T,4.2K) ranging from 15-60 kA/cm2, depending on composition. Magneto-optical…

Superconductivity · Physics 2007-05-23 B. J. Senkowicz , A. A. Polyanskii , R. J. Mungall , E. E. Hellstrom , D. C. Larbalestier