Introduction to Soft Matter Neutron Scattering
Introduction to Soft Matter Neutron Scattering, Mitsuhiro Shibayama, Springer Nature, Hardcover ISBN: 978-981-95-5778-3
24 February 2026
Science of Gel
Swelling and Shrinking Kinetics, Mitsuhiro Shibayama, Springer Nature, Hardcover ISBN: 978-981-95-0300-1
Structure Analysis of Gels, Mitsuhiro Shibayama, Springer Nature, Hardcover ISBN: 978-981-95-0300-1
2 January 2026
中性子散乱入門
中性子散乱入門、柴山充弘、講談社、ISBN-13: 978-4065395660
2025.5.27 発売
Soft Matter: Review Article
2025.3.12
Physics of Polymer Gels: Toyoichi Tanaka and after
M. Shibayama
Soft Matter, 2025, 21, 1995–2009
DOI: 10.1039/d4sm01418a
This review revisits the works of Toyoichi Tanaka on the physics of polymer gels and discusses their
scientific significance with the keywords of volume phase transition, structure, dynamics, kinetics and
inhomogeneities, followed by some recent topics including defect-free homogeneous gels. Then, the
modern physics of polymer gels will be considered from the viewpoints of cross-linking, networking,
and percolation, along with the scope of future directions of polymer gels and polymer networks.
Soft Matter: Original Article
2017.2.17
2D pair distribution function analysis of anisotropic small-angle scattering patterns from elongated nano-composite hydrogels
K. Nishi and M. Shibayama
Soft Matter, 2017, 13, 3065-3254
DOI: 10.1039/c6sm02350a
From 2D PDFs, we
obtained detailed and concrete structural information about the elongated PDAM-NP gel, such as affine and
non-affine displacements of directly attached and homogeneously dispersed silica nanoparticles, respectively.
We proposed that nanoparticles homogeneously dispersed in the perpendicular direction are not displaced due
to the collision of the adsorbed polymer layer during elongation, while those in the parallel direction are
displaced in an affine way. We assumed that this suppression of the lateral compression is the origin of the
four-spot pattern in this study.
Soft Matter: Original Article
2016.4.29
Probe-SAXS on hydrogels under elongation
K. Nishi and M. Shibayama
Soft Matter, 2016, 12, 5334-5339
DOI: 10.1039/c6sm00591h
A four-spot pattern was observed in the 2D structure factors of the PDAM-NP gel and was
assigned to the movement of the nanoparticles in an affine way. On the other hand, as for the PAM-NP
gel, a sharp peak was observed in the much lower q region than the prediction of affine deformation,
indicating that the peak corresponds to the correlation peak of the high cross-linking region. These
experimental findings may lead to the development of ‘‘probe-SAXS’’, which is a new technology for
detecting nano-order inhomogeneity in hydrogels.
Soft Matter: Original Article
2015.8.2
Supercoiling transformation of chemical gels
M. Asai, T. Katashima, T. Sakai, and M. Shibayama
Soft Matter, 2015, 11, 7101-7108
DOI: 10.1039/c5sm01550b
We use molecular dynamics simulation to verify the validity of the molecular picture of network
strands predicted by the Obukhov–Rubinstein–Colby model. We conclude that the physical picture of
the Obukhov–Rubinstein–Colby model is reasonable, and furthermore the simulation can reveal the
details of conformational changes in network strands during the supercoiling transformation
光散乱の基礎と応用
光散乱の基礎と応用、柴山充弘、佐藤尚弘、岩井俊昭、木村康之編、講談社、ISBN: 978-4-06-154387-4
2014.11.20 刊
Polymer Journal: Review Article
2010.11.17
Small-angle neutron scattering on polymer gels: phase behavior, inhomogeneities and deformation mechanisms
M. Shibayama
Polym. J., 2011, 43, 18-34
DOI: 10.1038/pj.2010.110
Recent developments in small-angle neutron scattering (SANS) investigations on polymer gels are reviewed by encompassing
(i) volume phase transition and microphase separation, (ii) inhomogeneities in polymer gels, (iii) pressure dependence of
hydrophobic interaction and (iv) structural characterization of super-tough gels. These developments owe much to the
understanding of gel inhomogeneities and advances in the precision analyses of SANS, such as the contrast variation method
coupled with singular value decomposition and the accurate evaluation of incoherent scattering intensity. As one of the fruitful
outcomes, deformation mechanisms in various types of super-tough gels are elucidated.