著者

磯部 賢治

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.62, no.6, pp.377-379, 2019-06-10 (Released:2019-06-10)

参考文献数

10

著者

佐藤 拓磨

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.4, pp.247-248, 2023-04-10 (Released:2023-04-10)

参考文献数

2

著者

齊藤 国靖

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.3, pp.170-175, 2023-03-10 (Released:2023-03-10)

参考文献数

10

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We study non-local effects on inhomogeneous flows of soft athermal particles near the jamming transition. We employ molecular dynamics simulations to demonstrate Kolmogorov flows, where a sinusoidal flow profile with fixed wave number is externally imposed, resulting in a spatially inhomogeneous shear rate. We find that the rheology of soft athermal particles is strongly wave number-dependent and particle migration is not sufficient to explain the resulting stress profiles within conventional local constitutive relations. We show that stress profiles can be described by non-local constitutive relations that account for gradients to fourth order.

著者

大平 圭介 中島 寛記 文 昱力 Huynh Thi Cam Tu

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.2, pp.91-96, 2023-02-10 (Released:2023-02-10)

参考文献数

16

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Ultrathin (∼1 nm) films have been widely used for high-efficiency crystalline silicon (c-Si) solar cells such as tunnel oxide passivated contact (TOPCon) solar cells. In this article, we present our recent results for the applications of ultrathin silicon oxide (SiOx) and silicon nitride (SiNx) films to c-Si solar cells. The following topics are reviewed. 1) Ultrathin SiNx can be utilized for passivating contacts instead of SiOx in the TOPCon structure. 2) The addition of SiOx between c-Si and thick catalytic-chemical-vapor-deposited (Cat-CVD) SiNx significantly improves the quality of surface passivation. 3) Ultrathin Al-doped SiOx films formed just by dipping in Al(NO3)3 solution on c-Si provide strong upward band bending due to negative fixed charges, which can be used for hole-selective contacts.

著者

田原 寛之 ルドルフ ジェイソン クアリア 林 智広

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.62, no.3, pp.141-146, 2019-03-10 (Released:2019-03-10)

参考文献数

33

被引用文献数

1

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In this review, we present the current situation of designs of biomaterials using techniques of informatics. In particular, we discuss the prediction the responses of proteins and cells toward materials and data-driven design of new biomaterials. We introduce our recent work, in which we analyzed the correlation among chemical structures of molecules constituting self-assembled monolayers (SAMs), amounts of adsorbed protein, a density of adhered platelets by machine learning using an artificial neural network model. The main conclusion is that the quality of the database is a critical factor in determining the accuracy of the prediction and material design. We also discuss technical issues to develop databases efficiently and systematically to expand the possibility of data-driven strategies to design biomaterials.

著者

都築 毅

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.62, no.12, pp.731-733, 2019-12-10 (Released:2019-12-10)

参考文献数

5

著者

福田 央 藤井 力 赤尾 健

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.62, no.4, pp.223-224, 2019-04-10 (Released:2019-04-10)

参考文献数

3

著者

本山 智洋 Ali Baratov Rui Shan Low 浦野 駿 中村 有水 葛原 正明 Joel T. Asubar 谷田部 然治

出版者

公益社団法人 日本表面真空学会

雑誌

日本表面真空学会学術講演会要旨集 2021年日本表面真空学会学術講演会 (ISSN:24348589)

巻号頁・発行日

pp.2Ca10S, 2021 (Released:2021-12-24)

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GaN系パワー・高周波デバイスのゲート絶縁膜として有望なAl2O3薄膜を低コストな酸化物薄膜形成手法であるミストCVD法により作製し評価した。ミストCVD法で作製したAl2O3薄膜は禁制帯幅など、ALD法で作製したAl2O3薄膜と同等の物性値を示した。またAl2O3/AlGaN/GaNキャパシタの容量-電圧特性から、良好なAl2O3/AlGaN界面が形成されていることが示唆された。

著者

玉田 薫 和賀 三和子

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.63, no.6, pp.314-317, 2020-06-10 (Released:2020-06-10)

参考文献数

10

被引用文献数

2

著者

木村 勇気 勝野 弘康 平川 靜 山﨑 智也

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.12, pp.700-705, 2023-12-10 (Released:2023-12-10)

参考文献数

27

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Non-equilibrium processes such as nucleation are difficult to observe in situ using transmission electron microscopy (TEM) because of spatiotemporal stochastic process. Therefore, we have been developing a method to predict/detect nucleation events and observe under low electron doses conditions in real time with the support of machine learning. Low electron dose observation is important to avoid radiolysis of water in the observation of aqueous solutions using liquid-cell TEM. Our data-driven TEM that can suggest observation points to the operator by processing in situ observation data in real time. In other words, it is data-driven TEM in which the TEM helps the operator, rather than the TEM being driven by the data. By incorporating the two codes into the TEM's software, nucleation can now be observed efficiently.

著者

上田 義勝 徳田 陽明 谷垣 実 赤松 重則 秦 隆志

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.11, pp.654-659, 2023-11-10 (Released:2023-11-10)

参考文献数

23

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The paper presents the results of electrical property measurements for submicron-scale bubbles (Ultra Fine Bubble, UFB) as a property that includes correlation with water. The relationship between the concentration of UFBs and average size and the electrical conductivity of water is shown, confirming that the presence of UFBs generated by oxygen gas decreases the electrical conductivity of water. In addition, the internal pressure was directly detected using the perturbation angle correlation method, and a lower internal pressure (about 3.4 atmospheres) than theoretical was measured. We proposed the use of ultrasonic waves as a simple detection method for bubbles, including the distinction between UFBs and impurities, and are still measuring the bubbles.

著者

橘 省吾

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.63, no.4, pp.189-194, 2020-04-10 (Released:2020-04-10)

参考文献数

16

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Hayabusa2 explored a near-Earth C-type asteroid (162173) Ryugu for 17 months (June 2018–November 2019) including two landing operations for sample collection. Ryugu has a top shape with an equatorial ridge, and its bulk density of 1.19±0.03 g cm-3 suggests that Ryugu is a rubble-pile body with a large macro-porosity of ∼50–60%. The surface has a very low geometric albedo (∼0.02), darker than most of meteorite samples, and shows a weak but ubiquitous 2.72-µm absorption feature of hydrous minerals. The surface samples will be delivered to the Earth at the end of 2020. Detailed analysis of Ryugu samples will reveal the history of Ryugu and the Solar System from the beginning to the present.

著者

山崎 詩郎

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.9, pp.553-554, 2023-09-10 (Released:2023-09-10)

参考文献数

3

著者

制野 かおり

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.4, pp.239-244, 2023-04-10 (Released:2023-04-10)

参考文献数

42

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Recent first-principles studies on step structures and adatom diffusion on SiC(0001) surfaces are reviewed. SiC is a promising material for next-generation power electronics, and SiC power devices are already on the market. The obtained formation energies of all the possible atomic steps provide a definite identification of the most relevant atomic step for two vicinal directions inclined toward either <1100> or <1120> direction on SiC(0001) surfaces. Relations between the energetics of surface steps and macroscopic step morphology are discussed. Diffusion mechanism for Si, C, and H adatoms which are three important chemical elements of gas sources of chemical vapor deposition (CVD) for SiC is revealed both on the surface terraces and near the surface steps.

著者

寒川 義裕 草場 彰

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.4, pp.227-232, 2023-04-10 (Released:2023-04-10)

参考文献数

12

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Data-driven materials development using first-principles calculations (materials informatics, MI) is widely known. Process informatics (PI), which explores crystal growth processes, is expected to be pioneered as the next research target in materials development. However, simulation techniques for the chemical vapor deposition (CVD) process, which is the core of PI, have not been developed. This paper describes recent progress in simulation technology for CVD processes, with a particular focus on surface modeling.

著者

仁木 栄

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.66, no.2, pp.77, 2023-02-10 (Released:2023-02-10)

著者

山田 真爾

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.62, no.1, pp.51, 2019-01-10 (Released:2019-01-10)

著者

泉川 寛晃

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.63, no.2, pp.74-76, 2020-02-10 (Released:2020-02-10)

参考文献数

1

著者

倉本 圭

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.63, no.4, pp.171-176, 2020-04-10 (Released:2020-04-10)

参考文献数

9

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A planetary atmosphere is the gaseous layer that divides the planetary surface and surrounding space. Although the Earth's atmosphere occupies a tiny fraction of the total Earth's mass, it plays an essential role to make the Earth's surface environment circulating liquid-water that is thought to be the most fundamental condition for the emergence and evolution of the terrestrial life organisms. The vertical structure of Earth's atmosphere from the Earth's surface to the uppermost region that merges into space is strongly influenced by interactions with space.

著者

木全 哲也

出版者

公益社団法人 日本表面真空学会

雑誌

表面と真空 (ISSN:24335835)

巻号頁・発行日

vol.65, no.8, pp.372, 2022-08-10 (Released:2022-08-10)

参考文献数

2