• 3521 Citations
  • 21 h-Index
1981 …2019
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Research Output 1981 2019

  • 3521 Citations
  • 21 h-Index
  • 93 Article
  • 10 Conference contribution
2019
2 Citations (Scopus)
textures
quantum wells
silicon
interactions
perturbation
2018

Ground-state molecular and electronic structures of group-IV nanoribbons, nanorings and nanotubes

Matsunaga, Y. K. & Takeda, K., 2018 Jan 1, In : Physical Chemistry Chemical Physics. 20, 37, p. 24353-24368 16 p.

Research output: Contribution to journalArticle

Nanorings
Carbon Nanotubes
Nanotubes
Ground state
Molecular structure
2017
1 Citation (Scopus)
isotropy
spin-orbit interactions
Semiconductor quantum dots
Orbits
Anisotropy
1 Citation (Scopus)

Electronic structure of worm-eaten graphene

Negishi, H. & Takeda, K., 2017 Feb 1, In : Japanese Journal of Applied Physics. 56, 2, 025101.

Research output: Contribution to journalArticle

worms
Graphene
Electronic structure
graphene
electronic structure
1 Citation (Scopus)
Nanorings
Nanoribbons
boron nitrides
Nanotubes
Electronic structure

Theoretical possibility of the chiral recognition of amino acids by a peptide nanoring

Takeuchi, J. & Takeda, K., 2017 Oct 15, In : Computational and Theoretical Chemistry. 1118, p. 53-64 12 p.

Research output: Contribution to journalArticle

Nanorings
peptides
amino acids
Amino Acids
Peptides
2016
1 Citation (Scopus)
spin-orbit interactions
Semiconductor quantum dots
Orbits
quantum dots
orbits
2 Citations (Scopus)

Theoretical study on application of peptide nanoring to chiral recognition of amino acid

Takeuchi, J. & Takeda, K., 2016 Mar 1, In : Japanese Journal of Applied Physics. 55, 3, 03DF09.

Research output: Contribution to journalArticle

Nanorings
Peptides
peptides
amino acids
Amino acids
2014
Nanotubes
Peptides
peptides
nanotubes
Electric fields
1 Citation (Scopus)
Polyolefins
Electronic states
Luminescence
Photons
Bond length
4 Citations (Scopus)

Reconsideration of relativistic corrections for an electron confined in a two-dimensional quantum dot: I. Spin-orbit coupling and Rashba effect

Yokozuka, T., Ido, K., Clark, R., Takeda, K. & Tokura, Y., 2014, In : Japanese Journal of Applied Physics. 53, 3, 031801.

Research output: Contribution to journalArticle

Semiconductor quantum dots
Orbits
quantum dots
orbits
Electronic structure
2013
1 Citation (Scopus)

Electrical field manipulation of peptide nanotube at finite temperature (a DFT/MD study)

Clark, R., Igami, D. & Takeda, K., 2013, AIP Conference Proceedings. American Institute of Physics Inc., Vol. 1566. p. 185-186 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

peptides
manipulators
nanotubes
molecular dynamics
electric field strength

Spin-orbit interaction and novel shell structure for multi-electron system confined in 2D QD

Yokozuka, T., Ido, K., Clark, R. & Takeda, K., 2013, AIP Conference Proceedings. American Institute of Physics Inc., Vol. 1566. p. 355-356 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

spin-orbit interactions
quantum dots
orbits
strokes
electrons
2 Citations (Scopus)

Theoretical studies on proton transfer in ammonium nitrate monomer and dimer

Takeuchi, J., Masuda, Y., Clark, R. & Takeda, K., 2013 Jan, In : Japanese Journal of Applied Physics. 52, 7 PART 1, 076302.

Research output: Contribution to journalArticle

ammonium nitrates
Proton transfer
Dimers
Nitrates
monomers

Time-dependent configuration interaction approach for multielectron system confined in two-dimensional quantum dot

Okunishi, T., Clark, R., Takeda, K., Kusakabe, K. & Tomita, N., 2013 Feb, In : Japanese Journal of Applied Physics. 52, 2, 022801.

Research output: Contribution to journalArticle

configuration interaction
Semiconductor quantum dots
quantum dots
Schrodinger equation
Hamiltonians

Time-dependent resonant UHF CI approach for the photo-induced dynamics of the multi-electron system confined in 2D QD

Okunishi, T., Clark, R., Takeda, K., Kusakabe, K. & Tomita, N., 2013, AIP Conference Proceedings. American Institute of Physics Inc., Vol. 1566. p. 532-533 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

quantum dots
electron oscillations
electrons
injection
ground state
2012
4 Citations (Scopus)

Optical characterization and computational chemical evaluation of electronic localized states in polyolefin

Arai, T., Hosobuchi, M., Fuse, N., Takeda, K. & Ohki, Y., 2012, In : IEEJ Transactions on Fundamentals and Materials. 132, 9, p. 760-766 7 p.

Research output: Contribution to journalArticle

Polyolefins
Electronic states
Luminescence
Photons
Bond length

Resonating UHF study on electron correlation in a ground state of two electrons confined in 2D quantum dot

Okunishi, T. & Takeda, K., 2012, Materials Research Society Symposium Proceedings. Vol. 1423. p. 13-18 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electron correlations
Wave functions
Ground state
configuration interaction
Semiconductor quantum dots
15 Citations (Scopus)

Shape of polygonal quantum dots and ground-state instability in the spin polarization

Ishizuki, M., Takemiya, H., Okunishi, T., Takeda, K. & Kusakabe, K., 2012 Apr 18, In : Physical Review B - Condensed Matter and Materials Physics. 85, 15, 155316.

Research output: Contribution to journalArticle

Spin polarization
polygons
Ground state
Semiconductor quantum dots
quantum dots
2011
2 Citations (Scopus)

Ground state instability in spin polarization for electrons confined in two-dimensional square quantum dots

Negishi, Y., Ishizuki, M., Okunishi, T. & Takeda, K., 2011 Aug, In : Japanese Journal of Applied Physics. 50, 8 PART 1, 085001.

Research output: Contribution to journalArticle

Spin polarization
Ground state
Semiconductor quantum dots
quantum dots
Mean field theory
1 Citation (Scopus)

Molecular dynamical study on ion channeling through peptide nanotube

Sumiya, N., Igami, D. & Takeda, K., 2011, AIP Conference Proceedings. Vol. 1399. p. 1055-1056 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

peptides
nanotubes
cations
ions
hydrogen bonds
4 Citations (Scopus)

Molecular dynamics approach of ion channeling through peptide nanotubes

Sumiya, N., Igami, D. & Takeda, K., 2011 Mar, In : Japanese Journal of Applied Physics. 50, 3, 037002.

Research output: Contribution to journalArticle

Nanotubes
Peptides
peptides
Molecular dynamics
nanotubes

Self-induced oscillation for electron-hole pair confined in quantum dot

Tagawa, T., Tsubaki, A., Ishizuki, M. & Takeda, K., 2011, AIP Conference Proceedings. Vol. 1399. p. 365-366 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

vacillation
quantum dots
oscillations
charged particles
Schroedinger equation

Singlet-triplet ground-state instability in square quantum dot

Negishi, Y., Ishizuki, M., Tsubaki, A., Takeda, K., Asari, Y. & Ohno, T., 2011, AIP Conference Proceedings. Vol. 1399. p. 497-498 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

quantum dots
ground state
destabilization
electron scattering
electrons
2010
3 Citations (Scopus)

Electron resonant tunneling through a circle-ring multicomponent quantum system

Sugiyama, K., Okunishi, T., Muraguchi, M. & Takeda, K., 2010 Mar 9, In : Physical Review B - Condensed Matter and Materials Physics. 81, 11, 115309.

Research output: Contribution to journalArticle

Resonant tunneling
resonant tunneling
eigenvectors
Electrons
rings
2009
7 Citations (Scopus)

Conformational transitions of cyclic D,L-peptides

Okamoto, H., Yamada, T., Kihara, S., Takechi, K., Takagi, H. & Takeda, K., 2009 Apr 30, In : Journal of Computational Chemistry. 30, 6, p. 962-973 12 p.

Research output: Contribution to journalArticle

Cyclic Peptides
Peptides
Isomers
Amino acids
Backbone
11 Citations (Scopus)

Molecular dynamical approach to the conformational transition in peptide nanorings and nanotubes

Teranishi, M., Okamoto, H., Takeda, K., Nomura, K. I., Nakano, A., Kalia, R. K., Vashishta, P. & Shimojo, F., 2009 Feb 5, In : Journal of Physical Chemistry B. 113, 5, p. 1473-1484 12 p.

Research output: Contribution to journalArticle

Peptide Nanotubes
Nanorings
Nanotubes
Peptides
peptides
5 Citations (Scopus)

Resonating Hartree-Fock approach for electrons confined in two dimentional square quantum dots

Okunishi, T., Negishi, Y., Muraguchi, M. & Takeda, K., 2009 Dec, In : Japanese Journal of Applied Physics. 48, 12, 125002.

Research output: Contribution to journalArticle

configuration interaction
Semiconductor quantum dots
quantum dots
Electrons
Electronic structure
2 Citations (Scopus)

Theoretical study of the time-dependent phenomenon of photon-assisted tunneling through a charged quantum dot

Muraguchi, M., Shiraishi, K., Okunishi, T. & Takeda, K., 2009, In : Journal of Physics Condensed Matter. 21, 6, 064230.

Research output: Contribution to journalArticle

Semiconductor quantum dots
Photons
quantum dots
photons
Electrons
2008
7 Citations (Scopus)

Chelation of transition metal ions by peptide nanoring

Kihara, S., Takagi, H., Takechi, K. & Takeda, K., 2008 Jun 26, In : Journal of Physical Chemistry B. 112, 25, p. 7631-7644 14 p.

Research output: Contribution to journalArticle

Nanorings
chelation
Chelation
Peptides
peptides
2007
13 Citations (Scopus)
Semiconductor quantum dots
Photons
quantum dots
Electrons
photons
19 Citations (Scopus)

Interstate interference of electron wave packet tunneling through a quantum ring

Okunishi, T., Ohtsuka, Y., Muraguchi, M. & Takeda, K., 2007 Jun 8, In : Physical Review B - Condensed Matter and Materials Physics. 75, 24, 245314.

Research output: Contribution to journalArticle

Wave packets
wave packets
Resonant tunneling
Angular momentum
Magnetic fields
4 Citations (Scopus)

Theoretical study on amphi-ionophorability of peptide nanorings

Yamada, T., Takechi, K., Nakanishi, T., Okamoto, H. & Takeda, K., 2007 Nov 6, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 46, 11, p. 7586-7595 10 p.

Research output: Contribution to journalArticle

Nanorings
clathrates
Peptides
peptides
Electron correlations
2006
9 Citations (Scopus)
Molecular structure
Electronic structure
molecular structure
electronic structure
Electrons
2005
4 Citations (Scopus)

Difference in self-assembling morphology of peptide nanorings

Okamoto, H., Yamada, T., Miyazaki, H., Nakanishi, T., Takeda, K., Usui, K., Obataya, I., Mhara, H., Azehara, H., Mizutani, W., Hashimoto, K., Yamaguchi, H. & Hirayama, Y., 2005 Nov 9, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 44, 11, p. 8240-8248 9 p.

Research output: Contribution to journalArticle

Nanorings
assembling
Nanotubes
Peptides
peptides
7 Citations (Scopus)

IR-study on stacking manner of peptide nanorings in peptide nanotubes

Nagai, Y., Nakanishi, T., Okamoto, H., Takeda, K., Furukawa, Y., Usui, K. & Mihara, H., 2005 Oct 11, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 44, 10, p. 7654-7661 8 p.

Research output: Contribution to journalArticle

Nanorings
Nanotubes
Peptides
peptides
nanotubes
4 Citations (Scopus)

Molecular design and morphology of peptide nanotubes: Towards the novel drug delivery materials

Okamoto, H. & Takeda, K., 2005 Jan, In : Journal of Drug Delivery Science and Technology. 15, 1, p. 97-107 11 p.

Research output: Contribution to journalArticle

Peptide Nanotubes
Pharmaceutical Preparations
Molecular Conformation
Atomic Force Microscopy
Drug Delivery Systems
1 Citation (Scopus)
Electronic states
Semiconductor quantum dots
quantum dots
Magnetic fields
orbitals
10 Citations (Scopus)

Time-dependent ballistic phenomena of electron injected into half-ellipse confined room

Koiso, T., Muraguchi, M., Takeda, K. & Watanabe, N., 2005 Jun, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 44, 6 A, p. 4252-4268 17 p.

Research output: Contribution to journalArticle

Wave packets
ellipses
Ballistics
ballistics
rooms
2004
1 Citation (Scopus)

A study of the self-assembling morphology in peptide nanorings and nanotubes

Okamoto, H., Nakanishi, T., Nagai, Y., Yamada, T., Miyazaki, H., Takeda, K., Furukawa, Y., Obataya, I., Mihara, H., Azehara, H., Mizutani, W., Hashimoto, K., Yamaguchi, H. & Hirayama, Y., 2004, Materials Research Society Symposium Proceedings. Wong, J. Y., Plant, A. L., Schmidt, C. E., Shea, L., Coury, A. J., Chen, C. S., Barron, A. E., Klok, H-A. & Deming, T. J. (eds.). 1 ed. Vol. EXS. p. 245-247 3 p. H3.9

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Peptide Nanotubes
Nanorings
Nanotubes
Peptides
Scanning probe microscopy
21 Citations (Scopus)

Electronic structures of polyheterole monomers, oligomers, polymers and their block copolymers

Narita, Y., Hagiri, I., Takahashi, N. & Takeda, K., 2004 Jul, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 43, 7 A, p. 4248-4258 11 p.

Research output: Contribution to journalArticle

block copolymers
oligomers
Oligomers
Block copolymers
Electronic structure
2 Citations (Scopus)
Ground state
Semiconductor quantum dots
quantum dots
Magnetic fields
ground state
14 Citations (Scopus)

Theoretical Possibility of the Variety of Ground-State Spin Arrangements Created by the Spin Hole and Spin Cap in π-Conjugated System

Hagiri, I., Takahashi, N. & Takeda, K., 2004 Mar 25, In : Journal of Physical Chemistry A. 108, 12, p. 2290-2304 15 p.

Research output: Contribution to journalArticle

caps
Ground state
Atoms
ground state
Ising model
2003
2 Citations (Scopus)

Atomic and electronic structure of misfit dislocations in GaSb/GaAs(0 0 1)

Miyagishima, N., Shinoda, T., Suzuki, K., Kaneko, T., Takeda, K., Shiraishi, K. & Ito, T., 2003 Dec 31, In : Physica B: Condensed Matter. 340-342, p. 1009-1012 4 p.

Research output: Contribution to journalArticle

Crystal atomic structure
Dislocations (crystals)
atomic structure
Electronic structure
electronic structure
7 Citations (Scopus)

Polymorphy in the Stereostructure of Periodic Polymer Backbones

Nakanishi, T., Okamoto, H., Kasahara, M. & Takeda, K., 2003 Nov 15, In : Journal of Polymer Science, Part B: Polymer Physics. 41, 22, p. 2829-2849 21 p.

Research output: Contribution to journalArticle

Polymers
polymers
musculoskeletal system
Conformations
Atoms
10 Citations (Scopus)

Theoretical prediction and atomic force microscope observations of the protein nanotube consisting of homo-L-amino acid penta-peptide nanorings

Okamoto, H., Nakanishi, T., Nagai, Y., Takeda, K., Obataya, I., Mihara, H., Azehara, H. & Mizutani, W., 2003 Feb, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 42, 2 A, p. 676-679 4 p.

Research output: Contribution to journalArticle

Nanorings
Nanotubes
Peptides
peptides
amino acids
49 Citations (Scopus)

Variety of the molecular conformation in peptide nanorings and nanotubes

Okamoto, H., Nakanishi, T., Nagai, Y., Kasahara, M. & Takeda, K., 2003 Mar 5, In : Journal of the American Chemical Society. 125, 9, p. 2756-2769 14 p.

Research output: Contribution to journalArticle

Peptide Nanotubes
Nanorings
Molecular Conformation
Nanotubes
Peptides
2002
1 Citation (Scopus)

Energetics in the growth mechanism of semiconductor heteroepitaxy

Miyagishima, N., Okajima, K., Oyama, N., Shiraishi, K., Takeda, K., Ohno, T. & Ito, T., 2002 Apr, In : Journal of Crystal Growth. 237-239, 1-4 II, p. 1599-1602 4 p.

Research output: Contribution to journalArticle

Dislocations (crystals)
Epitaxial growth
Semiconductor materials
Crystal lattices
Wetting
13 Citations (Scopus)

First principles and macroscopic theories of semiconductor epitaxial growth

Shiraishi, K., Oyama, N., Okajima, K., Miyagishima, N., Takeda, K., Yamaguchi, H., Ito, T. & Ohno, T., 2002 Apr, In : Journal of Crystal Growth. 237-239, 1-4 I, p. 206-211 6 p.

Research output: Contribution to journalArticle

Semiconductor growth
Epitaxial growth
Scanning tunneling microscopy
Dislocations (crystals)
Semiconductor materials
20 Citations (Scopus)

Synthesis and atomic force microscopy observations of the single-peptide nanotubes and their micro-order assemblies

Nakanishi, T., Okamoto, H., Nagai, Y., Takeda, K., Obataya, I., Mihara, H., Azehara, H., Suzuki, Y., Mizutani, W., Furukawa, K. & Torimitsu, K., 2002 Oct 15, In : Physical Review B - Condensed Matter and Materials Physics. 66, 16, p. 1654171-1654178 8 p., 165417.

Research output: Contribution to journalArticle

Peptide Nanotubes
Nanotubes
assemblies
Peptides
peptides