OKINAWA COLLOIDS 2019

Program

Technical Sessions

The conference consists of technical sessions and symposiums that cover broad scientific and technological subjects in the areas of colloids, surfaces and interfaces.
Details of technical sessions are shown below.

Surfactants and Self-Assembly

Amphiphilic molecules spontaneously self-organize into a variety of structures including micelle, bilayers, vesicle, and so on. Thus the self-assembled systems are widely of interest in practical use for foods, cosmetics, and pharmaceuticals as well as in basic science. The essential features of their phenomena have been vigorously explored by applying sophisticated techniques such as TEM, SEM, X-ray or neutron scattering, and molecular simulations. In this session, we focus on recent development of research on the structure and property of self-assembled systems from static and dynamic points of view. The following topics are within the scope of this session.

  • ・Self-assembly of surfactants and lipids
  • ・Supramolecular assembly
  • ・Rheology and dynamics of surfactant solutions
  • ・Theory and simulation
  • ・Synthesis and analysis of surfactants
Organizers

Takanori Takiue (Kyushu Univ.), Kenji Aramaki (Yokohama National Univ.), Tomokazu Yoshimura (Nara Women’s Univ.)

Foams/Bubbles/Emulsions and Microemulsions

Foams and emulsions stabilized by surfactants, amphiphilic polymers and solid particles are essential formulations for developing pharmaceuticals, cosmetics, foods and so on. Recently, many functional systems have been proposed including stimuli responsive materials, biocompatible materials, and environmental affinity materials. The topics of this session include a wide range of subjects: physical properties, phase behaviors and new functions of these systems.

Organizers

Yoshimune Nonomura (Yamagata Univ.), Toshio Sakai (Shinshu Univ.), Ryo Murakami (Konan Univ.)

Soft Matter, Active Matter and Dynamical Self-organization of Biomolecular Systems

The aim of this session is to provide an occasion for mutual communication for scientists among soft matter, active matter and dynamical self-organization of biomolecular systems. Concepts, opportunities and new directions of soft matter science will be deeply discussed stimulated with sciences of nonequilibrium, nonlinear and biological dynamical properties of molecular systems. Soft matter, active matter and dynamical self-organization of biomolecular systems will be pre-organized separately. However, the presentations will be programmed in crossover manner among the three areas in the same session. Heterogeneous communications are one of the most expected activities of this session. Contributions with young scientists or the scientists who are not usually been involved in “soft matter” science would be strongly appreciated as well as soft matter scientists.”

Organizers

Tatsuo Akitaya (Asahikawa Med. Univ.), Akira Kakugo (Hokkaido Univ.), Hiroyuki Kitahata (Chiba Univ.), Satoshi Nakata (Hiroshima Univ.), Hideki Seto (KEK), Akihisa Shioi (Doshisha Univ.), Yoshiko Takenaka (AIST), Kenichi Yoshikawa (Doshisha Univ.)

Membranes and LB films

Surfactants, lipids, and even some proteins and nanoparticles adsorb at interfaces to form thin films which provide and control interfacial functions. Thin films at planar interfaces are good model systems to study interfacial behavior of amphiphilic substances, and thus related researches involve many valuable insights in fundamental sciences as well as toward engineering applications. This session focuses on such thin films, and welcome a variety of topics such as self-assembly of amphiphilic molecules or nanoparticles at interfaces, biomimic systems with lipid bilayers, precise analysis of property and/or structure of films, thermodynamic treatment of planar thin films, application of thin films to electrochemistry and sensors, and so on.

Organizers

Ken-ichi Iimura (Utsunomiya Univ.), Atsuhiro Fujimori (Saitama Univ.), Cathy McNamee (Shinshu Univ.)

Colloidal Dispersion/Aggregation, Surface Forces and Rheology

Colloidal dispersions are heterogeneous and metastable systems in which particles of solid or droplets of liquid are dispersed in a liquid medium. Compared with homogeneous liquids, they are characterized by an extremely high area of interfaces, and their physicochemical properties are mainly controlled by the aggregation state of the constitutive particles or droplets, which depends on their mutual interactions. In general, van der Waals attractions compete with the osmotic pressure of liquid films surrounding the particles, due to the presence of ions or molecules. Hence, depending on the balance of forces, the suspended particles may either remain isolated from each other or aggregate/flocculate into various kinds of structures ranging from hard aggregates to interconnected networks. A whole variety of different states are achievable, i.e., from solid opaque and non-newtonian pastes to transparent newtonian fluids, which makes colloidal dispersions very attractive from not only a theoretical viewpoint, but also a practical one. This session explores a wide range of relevant areas, including surface forces, as well as their Rheology of dispersions by experiments and simulations.

Organizers

Shin-ichi Takeda (Takeda Colloid-Techno Consulting)

Nanoparticles and Nanomaterials

Nanoparticles and/or nanomaterials are materials with nanoscale dimensions in the range of typically 1-100 nm, where the surface or interface properties dominate over the bulk properties. Small particle size and large surface area of these nanomaterials provide novel physical and chemical properties such as increased catalytic activity, distinctive optical/magnetic behavior, and quantum properties. The often unexpected and novel behavior bears great potential for innovative applications (e.g. energy, electronics, environment, and medicine), but also poses great challenges to the scientists. This session covers a wide range of basic science and applications on various types of nanoparticles and/or nanomaterials including inorganic, polymeric, organic or biological nanomaterials with a variety of shapes and forms such as nanoplates, nanowires, nanosheets, nanotubes, and nanocomposite. We hope you join the session and to discuss and to share the latest developments in the field of nanoparticles and/or nanomaterials and the relevant advanced research areas!”

Organizers

Hideya Kawasaki (Kansai Univ.), Shinya Maenosono (JAIST), Hitoshi Kasai (Tohoku Univ.)

Wetting and Adhesion

“This session provides a forum for the basic aspect of wetting and adhesion and deals with applications of wetting and adhesion principles in all areas of technology. In order to develop wetting and adhesion sciences, this session aims to bridge the gap between the chemistry, physics, materials and engineering through accurate and current knowledge of wetting phenomena, chemistries of adhesives and coatings, surface modification of materials, and wetting and adhesion measurements.The key topics of this session are:

  • ・fundamental aspects of wetting and adhesion
  • ・advances in adhesive materials
  • ・Surface modification/coating
  • ・Stimulus-responsive wetting and adhesion
  • ・Biological and medical adhesion
Organizers

Syuji Fujii (Osaka Inst. of Tech.), Atsushi Hozumi (AIST)

Solid Surface -Adsorption, Catalysis, Tribology and Electrochemistry

Molecular behavior at the solid surface caused by physical and chemical interactions dominates various phenomena. The science in this area has advanced to a new stage by the designable nanostructures and visualization techniques in a molecular level. In this session, we discuss molecular phenomena and processes at the solid surface and its vicinity, concerning with adsorption, catalyst, tribology and electrochemistry.

Organizers

Taku Iiyama (Shinshu Univ.), Minoru Mizuhata (Kobe Univ.), Shinji Yamada (Kao)

Biocolloids, Biomaterials, Biointerfaces and Biomimetics

Biocolloids, biointerfaces, and biomaterials are closely related to the flow of substances and energy in the body and on the surface of living bodies. On the other hand, the functionality of the surface has been intensively studied from the viewpoint of biomimetics. In order to deepen understanding, actual phenomena of plants, insects, animals, microfabrication, materials science, social science, etc. are necessary. Development, investigations and applications of functional materials and systems based on biomimetic and bioinspired approaches are also important. This session welcomes the presentations by researchers working on various research areas and applications. We would like to make a place for the researchers to exchange opinions and discover new problems.

Organizers

Hiroyuki Mayama (Asahikawa Med. Univ.), Mineo Hashizume (Tokyo Univ. of Sci.), Yuji Hirai (Chitose Inst. of Sci. Tech.)

Colloids and Energy

The precision control of material interfaces is a critical aspect to achieve efficient energy storages and generations. The session mainly focuses on fundamental and engineering of colloid and interfacial sciences as well as unique functions of nanomaterials in the field of energy including fuel cells, solar cells and batteries. Other solution-processed materials and thin films for electronics-related fields are also welcomed.

Organizers

Taisei Nishimi (ARPChem), Yasuyuki Kusaka (AIST)

Nanomedicine and Pharmaceutical Science

Performance of drug molecules in human bodies can be improved significantly with knowledge of colloid and interface science. Many colloidal particles including liposomes, polymer micelles, polymer micro/nanospheres, polymeric conjugates, and nanogels are promising carriers for drug delivery. Behaviors of these carriers in the body and on the surface such as mucosa must be understood well for maximizing therapeutic efficacy. Dissolution process of orally administered molecules can be controlled by utilizing surfactants and polymers, where formulation studies are effectively conducted by understanding interfacial phenomena and colloidal chemistry. Diagnosis is also an important field where various nanoparticles are utilized. In this session, topics related to drug delivery as presented above, but not limited to, are discussed based on colloid and interface science.

Organizers

Kohsaku Kawakami (NIMS), Shinji Sakuma (Setsunan Univ.)

Application of Colloids–Cosmetics, Detergents, Household Products, Foods and Paints

Recent years, there are very attractive theories on dispersion, emulsion, phase equilibrium, molecular assembly and complex fluid for the products of Cosmetics, Detergents, Household Products, Foods, and Paints. This section is focused on the technologies for such application of colloids. The targets are not only the relevant researches to the products but the novel technologies of Rheology, Simulation, and other analysis and evaluation methods.

Organizers

Tatsushi Isojima (Nihon L’ORÉAL), Takehiko Kasai (Nihon L’ORÉAL), Kei Watanabe (Shiseido), Makoto Uyama (Shiseido), Keiko Yoda (Kao), Masako Koyama (Taiyo Kagaku), Tsutashi Matsuura (Mitsubishi-Chemical Foods)