Thermal Analysis of Electron-Beam Absorption in Low-Temperature Superconducting Films

Flik, M. I.; Goodson, Kenneth E.

doi:10.1115/1.2911256

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…Still, there is insufficient understanding about the fraction of electron energy that is converted to thermal energy, as well as predominant energy conversion process. [ 24 ] Another approach is to directly measure the temperature of the region under investigation. A common way to do this is to identify the temperature dependence in material properties such as diffraction patterns, [ 25–27 ] phase change, [ 28,29 ] electron energy loss, [ 30,31 ] and plasmon energy.…”

Section: Figurementioning

confidence: 99%

Direct Quantification of Heat Generation Due to Inelastic Scattering of Electrons Using a Nanocalorimeter

et al. 2020

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Transmission electron microscopy (TEM) is arguably the most important tool for atomic‐scale material characterization. A significant portion of the energy of transmitted electrons is transferred to the material under study through inelastic scattering, causing inadvertent damage via ionization, radiolysis, and heating. In particular, heat generation complicates TEM observations as the local temperature can affect material properties. Here, the heat generation due to electron irradiation is quantified using both top‐down and bottom‐up approaches: direct temperature measurements using nanowatt calorimeters as well as the quantification of energy loss due to inelastic scattering events using electron energy loss spectroscopy. Combining both techniques, a microscopic model is developed for beam‐induced heating and to identify the primary electron‐to‐heat conversion mechanism to be associated with valence electrons. Building on these results, the model provides guidelines to estimate temperature rise for general materials with reasonable accuracy. This study extends the ability to quantify thermal impact on materials down to the atomic scale.

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Section: Figurementioning

confidence: 99%

Direct Quantification of Heat Generation Due to Inelastic Scattering of Electrons Using a Nanocalorimeter

et al. 2020

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“…Here the manipulation of substrate temperature can be achieved by adding a heater under the substrate. In addition, part of emitted electrons may be absorbed in the substrate and hence increase the temperature of the investigated system 29 .…”

Section: Introductionmentioning

confidence: 99%

Temperature tunability of surface plasmon enhanced Smith-Purcell terahertz radiation for semiconductor-based grating

Cheng

Lan

et al. 2017

Sci Rep

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Strong demand of terahertz (THz) applications has attracted great attention in the development of compact and tunable light source. Especially, high-efficiency generation of THz light source is one of the most important issues and still remains to be overcome for the field of imaging and diagnostics 1, 2 . As an electron beam moves over a metallic surface, the surface plasmon (SP) on the surface can be excited. Subsequently, SP can be transformed into radiation modes by the designed structures such as slits, grooves and periodic gratings on the surface [3][4][5][6] . However, only the SPs whose operating frequencies close to the intrinsic plasma frequency of the metal can be efficiently excited. Hence the radiation frequencies are limited in optical and ultraviolet regions for most used noble metal 7 . An electron beam passing over a metallic grating can also generate Smith-Purcell radiation (SPR). This type of radiation comes from the oscillation of charges and imaged charges on the grating which induces the periodically changing current density on the grating [8][9][10][11][12] . The emission frequency of SPR ranges from microwave to visible depending on the grating period and the electron velocity. Very recently, SPR that are manipulated by excitation of SPs and mimimic-SPs has been proposed and demonstrated 9,10,[12][13][14] . Especially, ref. 10 investigates the condition that both the frequencies of SP and mimic-SP are out of the radiation band of SPR. The SPR is not enhanced and the radiations from SPR, SP and mimic-SP are all observed. References 13 and 14 propose and demonstrate amplification and manipulation of SPR by excitation of SPs on Ag film. And in refs 9 and 12, the generation of enhanced coherent THz SPR by excitation of mimic-SPs are proposed and explored.The indium antimonide (InSb)-dielectric interface can also support propagation of SPs under illumination of terahertz light source 15 . The optical property of InSb at THz region is similar to that of noble metals in the optical region [16][17][18] . Furthermore, the optical properties of InSb can be tailored by changing its temperature 19 , by applying external magnetic field on it 20 and by doping impurity into it 21 . Recently, many InSb-based tunable optoelectronic components based on controlling their temperatures have been studied, such as tunable photonic crystals 19 , infrared photo-detectors 22 , thermally controlled metamaterial [23][24][25][26] , data storage 27 , and subwavelength

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Stability of Superconductors

Wang

2013

Fundamental Elements of Applied Superconductivity in Electrical Engineering

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Thermal Analysis of Electron-Beam Absorption in Low-Temperature Superconducting Films

Cited by 8 publications

References 21 publications

Direct Quantification of Heat Generation Due to Inelastic Scattering of Electrons Using a Nanocalorimeter

Direct Quantification of Heat Generation Due to Inelastic Scattering of Electrons Using a Nanocalorimeter

Temperature tunability of surface plasmon enhanced Smith-Purcell terahertz radiation for semiconductor-based grating

Stability of Superconductors

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