| FullText URL | fulltext.pdf |
|---|---|
| Author | Saida, Yuri| Gauthier, Thomas| Suzuki, Hiroo| Ohmura, Satoshi| Shikata, Ryo| Iwasaki, Yui| Noyama, Godai| Kishibuchi, Misaki| Tanaka, Yuichiro| Yajima, Wataru| Godin, Nicolas| Privault, Gael| Tokunaga, Tomoharu| Ono, Shota| Koshihara, Shin-Ya| Tsuruta, Kenji| Hayashi, Yasuhiko| Bertoni, Roman| Hada, Masaki| |
| Note | The version of record of this article, first published in Nature Communications, is available online at Publisher’s website: http://dx.doi.org/10.1038/s41467-024-48880-3| |
| Published Date | 2024-05-30 |
| Publication Title | Nature Communications |
| Volume | volume15 |
| Issue | issue1 |
| Publisher | Nature Portfolio |
| Start Page | 4600 |
| ISSN | 2041-1723 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © The Author(s) 2024 |
| File Version | publisher |
| PubMed ID | 38816382 |
| DOI | 10.1038/s41467-024-48880-3 |
| Web of Science KeyUT | 001236316700036 |
| Related Url | isVersionOf https://doi.org/10.1038/s41467-024-48880-3 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Ali, Md. Shuzon| Hata, Yusuke| Tsuruta, Kenji| |
| Published Date | 2023-09-14 |
| Publication Title | Applied Physics Express |
| Volume | volume16 |
| Issue | issue9 |
| Publisher | IOP Publishing |
| Start Page | 094001 |
| ISSN | 1882-0778 |
| NCID | AA12295133 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2023 The Author(s). |
| File Version | publisher |
| DOI | 10.35848/1882-0786/acf1ef |
| Web of Science KeyUT | 001089892300001 |
| Related Url | isVersionOf https://doi.org/10.35848/1882-0786/acf1ef |
| FullText URL | fulltext20230515-04.pdf |
|---|---|
| Author | Tsuruta, Kenji| |
| Note | This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.35848/1347-4065/acc6da.| This fulltext file will be available in Apr. 2024.| |
| Published Date | 2023-04-27 |
| Publication Title | Japanese Journal of Applied Physics |
| Volume | volume62 |
| Issue | issueSJ |
| Publisher | IOP Publishing |
| Start Page | SJ0803 |
| ISSN | 0021-4922 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2023 The Japan Society of Applied Physics |
| File Version | author |
| DOI | 10.35848/1347-4065/acc6da |
| Web of Science KeyUT | 000975891900001 |
| Related Url | isVersionOf https://doi.org/10.35848/1347-4065/acc6da |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Ali, Md. Shuzon| Kataoka, Motoki| Misawa, Masaaki| Tsuruta, Kenji| |
| Published Date | 2023-01-25 |
| Publication Title | Japanese Journal of Applied Physics |
| Volume | volume62 |
| Issue | issueSJ |
| Publisher | IOP Publishing |
| Start Page | SJ1002 |
| ISSN | 0021-4922 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2023 The Author(s). |
| File Version | publisher |
| DOI | 10.35848/1347-4065/acae63 |
| Web of Science KeyUT | 000918497500001 |
| Related Url | isVersionOf https://doi.org/10.35848/1347-4065/acae63 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Kataoka, Motoki| Misawa, Masaaki| Tsuruta, Kenji| |
| Keywords | phononic crystal topological acoustic elastic waveguide backscattering length lamb wave |
| Published Date | 2022-10-13 |
| Publication Title | Symmetry |
| Volume | volume14 |
| Issue | issue10 |
| Publisher | MDPI |
| Start Page | 2133 |
| ISSN | 2073-8994 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2022 by the authors. |
| File Version | publisher |
| DOI | 10.3390/sym14102133 |
| Web of Science KeyUT | 000873707300001 |
| Related Url | isVersionOf https://doi.org/10.3390/sym14102133 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Machida, Narumi| Misawa, Masaaki| Kezuka, Yuki| Tsuruta, Kenji| |
| Keywords | Calcite Stearic acid Surface adsorption Density functional calculation Molecular dynamics |
| Published Date | 2022-08-06 |
| Publication Title | e-Journal of Surface Science and Nanotechnology |
| Volume | volume20 |
| Issue | issue4 |
| Publisher | The Japan Society of Vacuum and Surface Science |
| Start Page | 261 |
| End Page | 265 |
| ISSN | 1348-0391 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | ©2022 The author(s) |
| File Version | publisher |
| DOI | 10.1380/ejssnt.2022-041 |
| Web of Science KeyUT | 000891603200001 |
| Related Url | isVersionOf https://doi.org/10.1380/ejssnt.2022-041 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Takasugi, Shota| Watanabe, Keita| Misawa, Masaaki| Tsuruta, Kenji| |
| Note | This fulltext is available in Feb. 2022.| |
| Published Date | 2021-02-22 |
| Publication Title | Japanese Journal of Applied Physics |
| Volume | volume60 |
| Issue | issueSD |
| Publisher | IOP Publishing |
| Start Page | SDDA01 |
| ISSN | 0021-4922 |
| NCID | AA12295836 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| File Version | author |
| DOI | 10.35848/1347-4065/abe2e5 |
| Web of Science KeyUT | 000621475200001 |
| Related Url | isVersionof https://doi.org/10.35848/1347-4065/abe2e5 |
| FullText URL | APL_117_101103.pdf |
|---|---|
| Author | Iida, Takumi | Ishikawa, Atsushi| Tanaka, Takuo| Muranaka, Atsuya| Uchiyama, Masanobu| Hayashi, Yasuhiko| Tsuruta, Kenji| |
| Note | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Takumi Iida et. al. Super-chiral vibrational spectroscopy with metasurfaces for high-sensitive identification of alanine enantiomers. Appl. Phys. Lett. 117, 101103 (2020) and may be found at https://doi.org/10.1063/5.0012331.| |
| Published Date | 2020-09-09 |
| Publication Title | Applied Physics Letters |
| Volume | volume117 |
| Issue | issue10 |
| Publisher | American Institute of Physics |
| Start Page | 101103 |
| ISSN | 0003-6951 |
| NCID | AA00543431 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| File Version | publisher |
| DOI | 10.1063/5.0012331 |
| Web of Science KeyUT | 000571581400002 |
| Related Url | isVersionOf https://doi.org/10.1063/5.0012331 |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Suichi, Takahiro| Ishikawa, Atsushi| Tanaka, Takuo| Hayashi, Yasuhiko| Tsuruta, Kenji| |
| Published Date | 2020-04-16 |
| Publication Title | Scientific Reports |
| Volume | volume10 |
| Issue | issue1 |
| Publisher | Nature |
| Start Page | 6486 |
| ISSN | 2045-2322 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © The Author(s) 2020 |
| File Version | publisher |
| PubMed ID | 32300158 |
| DOI | 10.1038/s41598-020-63591-7 |
| Web of Science KeyUT | 000562142100005 |
| Related Url | isVersionOf https://doi.org/10.1038/s41598-020-63591-7 |
| FullText URL | JJAP_59.pdf |
|---|---|
| Author | Watanabe, Keita| Fujita, Mikiya| Tsuruta, Kenji| |
| Note | This fulltext is available in Apr. 2021.| |
| Published Date | 2020-04-06 |
| Publication Title | Japanese Journal of Applied Physics |
| Volume | volume59 |
| Issue | issueSK |
| Publisher | Japan Society of Applied Physics |
| Start Page | SKKA06 |
| ISSN | 0021-4922 |
| NCID | AA12295836 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © 2020 The Japan Society of Applied Physics |
| File Version | author |
| DOI | 10.35848/1347-4065/ab7e3e |
| Web of Science KeyUT | 000546613200005 |
| Official Url | https://iopscience.iop.org/article/10.35848/1347-4065/ab7e3e| |
| FullText URL | fulltext.pdf |
|---|---|
| Author | Hada, Masaki| Yamaguchi, Daisuke| Ishikawa, Tadahiko| Sawa, Takayoshi| Tsuruta, Kenji| Ishikawa, Ken| Koshihara, Shin-Ya| Hayashi, Yasuhiko| Kato, Takashi| |
| Published Date | 2019-09-13 |
| Publication Title | Nature Communications |
| Volume | volume10 |
| Publisher | Nature Publishing Group |
| Start Page | 4159 |
| ISSN | 2041-1723 |
| Content Type | Journal Article |
| language | English |
| OAI-PMH Set | 岡山大学 |
| Copyright Holders | © The Author(s) 2019 |
| File Version | publisher |
| PubMed ID | 31519876 |
| DOI | 10.1038/s41467-019-12116-6 |
| Web of Science KeyUT | 000485685200005 |
| Related Url | isVersionOf https://doi.org/10.1038/s41467-019-12116-6 |
| JaLCDOI | 10.18926/19953 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_44_1.pdf |
| Author | Nagai Shinji| Umeda Ryosuke| Tsuruta, Kenji| |
| Abstract | In this paper, we investigate a light-confinement phenomenon in the structure which has triangular latice composed of Double NeGative Metamaterial (DNGM). In geometrical optics consideration, this structure is expected to confine lights completely by sequential refractions in the structure. We demonstrate it by using the two dimensional finite-difference time-domain simulations. We introduce Drude-Lorentz model for dielectric and magnetic dispersion of the material at optical frequencies. We analyze quantitatively the effects of energy loss in the DNGM on the light-confinement efficiency. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2010-01 |
| Volume | volume44 |
| Start Page | 1 |
| End Page | 6 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002309117 |
| JaLCDOI | 10.18926/19954 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_44_7.pdf |
| Author | Maetani Noriaki| Kurose Tomoyuki| Tsuruta, Kenji| |
| Abstract | The lens effect of acoustic waves in a two-dimensional (2D) phononic crystal is studied by numerical simulation based on the finite-difference time-domain (FDTD) method. We calculate the phonon band structure of 2D phononic crystals, consisting of metal cylinders placed periodically in water. Lens effect is observed by the negative refraction of acoustic waves, which results in refocusing of the waves at the point outside the crystal. To increase the focal intensity, we introduce a 2D phononic crystal shield with a different composition of material, which returns the incident waves back to the lens via the perfect reflection. Also, the dependence on filling fraction of metal in the crystal is studied. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2010-01 |
| Volume | volume44 |
| Start Page | 7 |
| End Page | 12 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002309019 |
| JaLCDOI | 10.18926/17831 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_43_22.pdf |
| Author | Totsuji, Hiroo| Chai Hong| Totsuji, Chieko| Tsuruta, Kenji| |
| Abstract | For the transfer of quantum information and the creation of entangled states, the application of tuned spin chains, systems of spins with the nearest-neighbor coupling tuned so as to give high efficiency, has been proposed and some examples of high performance have been given by several authors. In this article, the effect of deviations from tuned values and the effect of resultant asymmetry are investigated through numerical simulations and theoretical analyses. It is shown that there exists a system where the transfer efficiency is comparable with exactly tuned ones and, at the same time, robust to noises in the coupling constants. It is also shown that the effect of asymmetry on the efficiency of entanglement creation is of the second order when the asymmetry is small. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2009-01 |
| Volume | volume43 |
| Start Page | 22 |
| End Page | 26 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002308966 |
| JaLCDOI | 10.18926/17826 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_43_8.pdf |
| Author | Umeda Ryosuke| Totsuji, Chieko| Tsuruta, Kenji| Totsuji, Hiroo| |
| Abstract | Metamaterial which has negative permittivity and permeability is investigated via computer simulations. Effects of the nanostructure on dielectric and magnetic properties of the material are taken into account by introducing the Drude-Lorentz model in the materials dispersion. We include multi-band process in the dielectric response in order to reproduce accurately experimental values of bulk Au thin film. Size effect on the dispersion is examined by comparing the model with that of a noble metal particle. Based on the dispersion model constructed, we analyze the electromagnetic response of nanostructured metamaterials to evanescent waves at microwave and optical frequencies via finite-difference time-domain simulatioins on parallel computer. A re- focusing and an amplification of the evanescent waves propagating through a metamaterial, consisting of metal slab/vacuum stacking, is demonstrated for the frequencies of 30GHz and 744THz. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2009-01 |
| Volume | volume43 |
| Start Page | 8 |
| End Page | 15 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002308833 |
| JaLCDOI | 10.18926/17829 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_43_16.pdf |
| Author | Kurose Tomoyuki| Tsuruta, Kenji| Totsuji, Chieko| Totsuji, Hiroo| |
| Abstract | The finite-difference time-domain (FDTD) method has been applied to the calculation of the phonon band structure of two-dimensional (2D) phononic crystals, consisting of metal cylinders placed periodically in liquid. By comparing several combinations of materials for metal cylinder and liquid, we analyze the dependence of the band structures on sound speed and density of liquid media. Moreover, the negative refraction of the acoustic waves is observed at the interfaces between phononic crystal slab and the liquid. We find that an acoustic“lens effect”with the slab appears due to the negative refractions. The relationship between the focal intensity in the lens effect and the band structure is discussed. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2009-01 |
| Volume | volume43 |
| Start Page | 16 |
| End Page | 21 |
| ISSN | 1349-6115 |
| language | English |
| File Version | publisher |
| NAID | 120002308928 |
| JaLCDOI | 10.18926/14058 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_42_44.pdf |
| Author | Ogawa Takafumi| Tsuruta, Kenji| Totsuji, Chieko| Totsuji, Hiroo| Hiroshi Iyetomi| |
| Abstract | To analyze vibrational properties of Si crystal with a single charge-neutral vacancy, we perform large-scale simulations based on tight-binding molecular-dynamics method. Vibrational modes and frequencies are obtained by diagonalizing dynamical matrix within a harmonic approximation. Results indicate that there exist vibrational modes spatially localized around the vacancy and large frequency shifts associated with the localized modes contribute significantly to reduction of the vibrational free energy. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2008-01 |
| Volume | volume42 |
| Issue | issue1 |
| Start Page | 44 |
| End Page | 47 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308412 |
| JaLCDOI | 10.18926/14059 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_42_48.pdf |
| Author | Totsuji, Chieko| Miyake Takashi| Nakanishi Kenta| Tsuruta, Kenji| Totsuji, Hiroo| |
| Abstract | Based on the mapping introduced by the classical-map hypernetted-chain (CHNC) method, classical numerical simulations, Monte Carlo and molecular dynamics, have been applied to the twodimensional electron fluid and the results are compared with those of quantum Monte Carlo simulations hitherto reported. It is shown that polarization properties of the ground state obtained by the diffusion Monte Carlo method are reproduced within the accuracy of quantum simulations by both of two mapping functions for the quantum temperature which have been proposed within the CHNC method. These results may serve as the basis of numerical simulations based on the CHNC method which are applicable to finite non-periodic systems like quantum dots and systems at finite temperatures. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2008-01 |
| Volume | volume42 |
| Issue | issue1 |
| Start Page | 48 |
| End Page | 52 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308425 |
| JaLCDOI | 10.18926/14061 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_42_56.pdf |
| Author | Miyake Takashi| Totsuji, Chieko| Nakanishi Kenta| Tsuruta, Kenji| Totsuji, Hiroo| |
| Abstract | We analyze the ground state of the two-dimensional quantum system of electrons confined in a parabolic potential with the system size around 100. We map the system onto a classical system on the basis of the classical-map hypernetted-chain (CHNC) method which has been proven to work in the integral-equation-based analyses of uniform unbounded systems and then apply classical numerical simulations. We find that the confined system undergoes the transition to the spin polarized state with the decrease of the average density and the corresponding critical value is as low as rs ∼ 0.3 in terms of the usual rs parameter estimated for the average density. As the ground state for given value of the rs parameter, our data give the critical value for the transition around 20 which is consistent with the known possibility. The advantage of our method is a direct applicability to geometrically complex systems which are difficult to analyze by integral equations. The application to the structure like quantum dots reported here is the first example of such applications. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2008-01 |
| Volume | volume42 |
| Issue | issue1 |
| Start Page | 56 |
| End Page | 59 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308633 |
| JaLCDOI | 10.18926/14120 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_40_1_36.pdf |
| Author | Uchida, Atsushi| Totsuji, Chieko| Tsuruta, Kenji| Totsuji, Hiroo| |
| Abstract | We present a Stochastic-Difference-Equation (SDE) approach to long time-scale molecular dynamics (MD) simulations, which are required for nanosecond-scale phenomena. In this method, the MD trajectory in a fixed time period is obtained as a stationary solution of an action functional based on an error accumulation of the equation of motion along the path, thus reducing the problem to a boundary-value problem, instead of an initial-value problem in the ordinary MD method. We apply the method to formation processes of Cu thin film via nanocluster deposition onto a substrate. The applicability of the SDE algorithm to the problem and the effects of the choice of SDE parameters on the optimization processes of configuration pathway are examined. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2006-01 |
| Volume | volume40 |
| Issue | issue1 |
| Start Page | 36 |
| End Page | 39 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308517 |
