Masahiko Annaka

2.7k total citations
98 papers, 2.3k citations indexed

About

Masahiko Annaka is a scholar working on Molecular Medicine, Organic Chemistry and Materials Chemistry. According to data from OpenAlex, Masahiko Annaka has authored 98 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Molecular Medicine, 35 papers in Organic Chemistry and 20 papers in Materials Chemistry. Recurrent topics in Masahiko Annaka's work include Hydrogels: synthesis, properties, applications (45 papers), Advanced Polymer Synthesis and Characterization (24 papers) and Surfactants and Colloidal Systems (20 papers). Masahiko Annaka is often cited by papers focused on Hydrogels: synthesis, properties, applications (45 papers), Advanced Polymer Synthesis and Characterization (24 papers) and Surfactants and Colloidal Systems (20 papers). Masahiko Annaka collaborates with scholars based in Japan, United States and Denmark. Masahiko Annaka's co-authors include Toyoichi Tanaka, Takayuki Nakahira, Teruo Okano, Ken Sakai, Kenichi Nagase, Ryuhei Motokawa, Akihiko Kikuchi, Hideko Kanazawa, Jun Kobayashi and Yoshikatsu Akiyama and has published in prestigious journals such as Nature, Physical Review Letters and The Journal of Chemical Physics.

In The Last Decade

Masahiko Annaka

97 papers receiving 2.2k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Masahiko Annaka Japan 26 816 796 552 457 434 98 2.3k
Linda Swanson United Kingdom 27 555 0.7× 1.1k 1.4× 363 0.7× 436 1.0× 330 0.8× 73 2.4k
Sivanand S. Pennadam United Kingdom 12 582 0.7× 838 1.1× 488 0.9× 352 0.8× 345 0.8× 13 1.9k
Shouei Fujishige Japan 9 1.1k 1.3× 894 1.1× 340 0.6× 336 0.7× 271 0.6× 22 1.8k
Avraham Halperin France 16 456 0.6× 694 0.9× 380 0.7× 346 0.8× 436 1.0× 25 1.8k
Nicolas Sanson France 25 575 0.7× 602 0.8× 503 0.9× 736 1.6× 300 0.7× 46 2.0k
Piotr Kujawa Canada 19 564 0.7× 910 1.1× 306 0.6× 283 0.6× 512 1.2× 33 1.8k
Florian D. Jochum Germany 21 491 0.6× 1.6k 2.0× 597 1.1× 1.1k 2.4× 457 1.1× 24 2.8k
Xing‐Ping Qiu Canada 25 900 1.1× 1.7k 2.1× 397 0.7× 550 1.2× 804 1.9× 48 2.9k
Erik Wischerhoff Germany 30 295 0.4× 655 0.8× 575 1.0× 358 0.8× 1.0k 2.4× 66 2.2k
Kazuaki Kato Japan 24 337 0.4× 698 0.9× 365 0.7× 524 1.1× 111 0.3× 95 1.9k

Countries citing papers authored by Masahiko Annaka

Since Specialization
Citations

This map shows the geographic impact of Masahiko Annaka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masahiko Annaka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masahiko Annaka more than expected).

Fields of papers citing papers by Masahiko Annaka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masahiko Annaka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masahiko Annaka. The network helps show where Masahiko Annaka may publish in the future.

Co-authorship network of co-authors of Masahiko Annaka

This figure shows the co-authorship network connecting the top 25 collaborators of Masahiko Annaka. A scholar is included among the top collaborators of Masahiko Annaka based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Masahiko Annaka. Masahiko Annaka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Annaka, Masahiko, et al.. (2025). Sliding Friction of Hydrogels with Surface Hemispherical Dimples in Water. Langmuir. 41(12). 8152–8162. 1 indexed citations
2.
Maki, Yasuyuki, Koichi Matsuo, & Masahiko Annaka. (2025). Effect of Sucrose and Sucralose on the Gelation of Gelatin. Biomacromolecules. 26(11). 8280–8288.
3.
Maki, Yasuyuki, et al.. (2024). Protein Preferential Solvation in (Sucralose + Water) Mixtures. The Journal of Physical Chemistry B. 128(3). 676–683. 5 indexed citations
4.
Annaka, Masahiko. (2022). Anion specific conformational change in aqueous gellan gum solutions. Carbohydrate Polymers. 305. 120437–120437. 3 indexed citations
5.
Shundo, Atsuomi, et al.. (2013). Nonsolvents-induced swelling of poly(methyl methacrylate) nanoparticles. Physical Chemistry Chemical Physics. 15(39). 16574–16574. 12 indexed citations
6.
Annaka, Masahiko, Kell Mortensen, Martin E. Vigild, et al.. (2011). Design of an Injectable in Situ Gelation Biomaterials for Vitreous Substitute. Biomacromolecules. 12(11). 4011–4021. 45 indexed citations
7.
Mizutani, Aya, Kenichi Nagase, Akihiko Kikuchi, et al.. (2010). Effective separation of peptides using highly dense thermo-responsive polymer brush-grafted porous polystyrene beads. Journal of Chromatography B. 878(24). 2191–2198. 39 indexed citations
8.
Nagase, Kenichi, Hideko Kanazawa, Jun Kobayashi, et al.. (2010). Thermoresponsive Polymer Brush Surfaces with Hydrophobic Groups for All-Aqueous Chromatography. ACS Applied Materials & Interfaces. 2(4). 1247–1253. 60 indexed citations
9.
Mizutani, Aya, Kenichi Nagase, Akihiko Kikuchi, et al.. (2010). Preparation of thermo-responsive polymer brushes on hydrophilic polymeric beads by surface-initiated atom transfer radical polymerization for a highly resolutive separation of peptides. Journal of Chromatography A. 1217(38). 5978–5985. 40 indexed citations
10.
Matsuura, Toyoaki, et al.. (2009). Anisotropic Swelling Behavior of the Cornea. The Journal of Physical Chemistry B. 113(51). 16314–16322. 15 indexed citations
11.
Matsuda, Yasuhiro, Motoyasu Kobayashi, Atsushi Takahara, et al.. (2008). On the Dimension of a Hyperbranched Polymer Synthesized from a Styrene Derivative. Polymer Journal. 40(4). 375–378. 3 indexed citations
12.
Maruoka, Shinji, Toyoaki Matsuura, Kensuke Kawasaki, et al.. (2006). Biocompatibility of Polyvinylalcohol Gel as a Vitreous Substitute. Current Eye Research. 31(7-8). 599–606. 83 indexed citations
13.
Motokawa, Ryuhei, Masahiko Annaka, Takayuki Nakahira, & Satoshi Koizumi. (2004). Small-angle neutron scattering study on microstructure of poly(N-isopropylacrylamide)-block-poly(ethylene glycol) in water. Colloids and Surfaces B Biointerfaces. 38(3-4). 213–219. 9 indexed citations
14.
Motokawa, Ryuhei, Takayuki Nakahira, Masahiko Annaka, Takeji Hashimoto, & Satoshi Koizumi. (2004). Time-resolved gel permeation chromatographic study on poly(N-isopropylacrylamide)-block-poly(ethylene glycol) prepared by soap-free emulsion polymerization. Polymer. 45(26). 9019–9022. 14 indexed citations
15.
Matsuura, Toyoaki, et al.. (2004). Volume Phase Transition of Bovine Vitreous Body in Vitro and Determination of Its Dynamics. Biomacromolecules. 5(4). 1296–1302. 2 indexed citations
16.
Matsuura, Toyoaki, Masaaki Sugiyama, Masahiko Annaka, Yoshiaki Hara, & Teruo Okano. (2003). Microscopic implication of rapid shrinking of comb-type grafted poly(N-isopropylacrylamide) hydrogels. Polymer. 44(16). 4405–4409. 20 indexed citations
17.
Sasaki, Shigeo, Shogo Koga, Masaaki Sugiyama, & Masahiko Annaka. (2003). Nanostructures of polyelectrolyte gel-surfactant complexes in uniaxially stretched networks. Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics. 68(2). 21504–21504. 10 indexed citations
18.
Koizumi, Satoshi, M. Monkenbusch, Dieter Richter, et al.. (2002). Observation of Concentration Fluctuations in Polymer Gels Performed by Neutron Spin Echo. Journal of Neutron Research. 10(3-4). 155–162. 4 indexed citations
19.
Annaka, Masahiko, et al.. (2002). Fluorescence Study on the Swelling Behavior of Comb-Type Grafted Poly(N-isopropylacrylamide) Hydrogels. Macromolecules. 35(21). 8173–8179. 43 indexed citations
20.
Annaka, Masahiko, et al.. (2000). Studies on the States of Water and Sodium Ions in Poly(N-isopropylacrylamide) Gel. Japanese Journal of Applied Physics. 39(12R). 6643–6643. 9 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Linda Swanson Breakdown of academic impact, for papers by Sivanand S. Pennadam Breakdown of academic impact, for papers by Shouei Fujishige Breakdown of academic impact, for papers by Avraham Halperin Breakdown of academic impact, for papers by Nicolas Sanson Breakdown of academic impact, for papers by Piotr Kujawa Breakdown of academic impact, for papers by Florian D. Jochum Breakdown of academic impact, for papers by Xing‐Ping Qiu Breakdown of academic impact, for papers by Erik Wischerhoff Breakdown of academic impact, for papers by Kazuaki Kato
Rankless by CCL
2026