Development and benchmarking of the first fast Monte Carlo engine for helium ion beam dose calculation: MonteRay.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.16178
Abstract: BACKGROUND Monte Carlo (MC) simulations are considered the gold-standard for accuracy in radiotherapy dose calculation; however, general purpose MC engines are computationally demanding and require long runtimes. For this reason, several groups have recently developed… read more here.
Keywords: monteray; dose; engine; helium ion ... See more keywords
Effect of helium pre-implantation on the thermal shock performance of tungsten
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear materials and energy"
DOI: 10.1016/j.nme.2021.100934
Abstract: Abstract In ITER and future tokamaks, high heat flux loads will lead to recrystallization and decrease in toughness and thermal shock resistance of tungsten plasma facing materials, resulting in crack network formation and possible failure.… read more here.
Keywords: helium; thermal shock; helium plasma; helium ion ... See more keywords
3D Nanostructures Grown via Focused Helium Ion Beam Induced Deposition
Sign Up to like & getrecommendations! Published in 2018 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927618002155
Abstract: The next generation of advanced computing devices will require complex nanoscale frameworks that extend into 3D. Focused ion beam induced deposition (FIBID), uses an organometallic precursor gas in a field ion microscope to fabricate nanoscale… read more here.
Keywords: induced deposition; ion beam; beam induced; deposition ... See more keywords
Helium Ion Microscopy for Reduced Spin Orbit Torque Switching Currents.
Sign Up to like & getrecommendations! Published in 2020 at "Nano letters"
DOI: 10.1021/acs.nanolett.0c02060
Abstract: Spin orbit torque driven switching is a favourable way to manipulate nanoscale magnetic objects for both memory and wireless communication devices. The critical current required to switch from one magnetic state to another depends on… read more here.
Keywords: spin orbit; orbit torque; helium ion; microscopy ... See more keywords
Optical Nanoscopy of High Tc Cuprate Nanoconstriction Devices Patterned by Helium Ion Beams.
Sign Up to like & getrecommendations! Published in 2017 at "Nano letters"
DOI: 10.1021/acs.nanolett.6b04729
Abstract: Helium ion beams (HIB) focused to subnanometer scales have emerged as powerful tools for high-resolution imaging as well as nanoscale lithography, ion milling, or deposition. Quantifying irradiation effects is an essential step toward reliable device… read more here.
Keywords: ion beams; optical nanoscopy; microscopy; cuprate ... See more keywords
Tuning of the Thermoelectric Properties of Bi2Te3 Nanorods Using Helium Ion Irradiation
Sign Up to like & getrecommendations! Published in 2018 at "ACS Omega"
DOI: 10.1021/acsomega.8b02379
Abstract: The present study reports an enhancement of the power factor of Bi2Te3 nanorods NRs) by helium (He+) ion irradiation. High-resolution transmission electron microscopy studies revealed the formation of amorphous layers on the surface of the… read more here.
Keywords: bi2te3 nanorods; ion; ion irradiation; helium ion ... See more keywords
Engineering the thermal conductivity along an individual silicon nanowire by selective helium ion irradiation
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/ncomms15919
Abstract: The ability to engineer the thermal conductivity of materials allows us to control the flow of heat and derive novel functionalities such as thermal rectification, thermal switching and thermal cloaking. While this could be achieved… read more here.
Keywords: selective helium; conductivity along; thermal conductivity; conductivity ... See more keywords
Near-field imaging of graphene triangles patterned by helium ion lithography.
Sign Up to like & getrecommendations! Published in 2018 at "Nanotechnology"
DOI: 10.1088/1361-6528/aad0b4
Abstract: Plasmon nanoresonators in graphene have many applications in biosensing, photodetectors and modulators. As a result, an efficient and precise patterning technique for graphene is required. Helium ion lithography (HIL) emerges as a promising tool for… read more here.
Keywords: ion lithography; lithography; ion; triangles patterned ... See more keywords
Optical properties and annealing effects of planar waveguides on fluoride lead silicate glass formed by proton and helium-ion implantation
Sign Up to like & getrecommendations! Published in 2021 at "Optical Engineering"
DOI: 10.1117/1.oe.60.2.027105
Abstract: Abstract. The optical planar waveguides were fabricated by proton implantation with an energy of 400 keV and a dose of 8 × 1016 ions / cm2 or 400-keV helium-ion implantation with a fluence of 6 × 1016 ions / cm2 in the fluoride lead silicate… read more here.
Keywords: silicate glass; lead silicate; fluoride lead; helium ion ... See more keywords
Divertor Plasma Simulation Experiment Using Hydrogen Ionizing Plasma and Helium Ion Beam in an RF Plasma Source DT-ALPHA
Sign Up to like & getrecommendations! Published in 2018 at "Plasma and Fusion Research"
DOI: 10.1585/pfr.13.3401053
Abstract: A helium ion beam was injected into hydrogen ionizing plasma using a radio-frequency plasma source to study divertor plasma. Optical emissions from the hydrogen Balmer series and Fulcher-α band were collected. The emissions of the… read more here.
Keywords: helium ion; ion beam; plasma; hydrogen ... See more keywords
Versatile Approach of Silicon Nanofabrication without Resists: Helium Ion-Bombardment Enhanced Etching
Sign Up to like & getrecommendations! Published in 2022 at "Nanomaterials"
DOI: 10.3390/nano12193269
Abstract: Herein, we report a helium ion-bombardment enhanced etching method for silicon nanofabrication without the use of resists; furthermore, we demonstrate its unique advantages for straightforward fabrication on irregular surfaces and prototyping nano-electro-mechanical system devices, such… read more here.
Keywords: bombardment enhanced; ion bombardment; nanofabrication; silicon ... See more keywords