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J-OCTA, an integrated simulation system for polymeric material, is widely used in material R&D Center of Industry and University. J-OCTA predicts material properties with multi-scale simulation technology (from atomic to micrometer scale) and supports the development of wide variety of high functional materials.
What's new on J-OCTA v1.9:
- OCTA8 (the latest version of OCTA) is supported. - Drawing Speed is improved about 3 times faster (with 1 million particles,) on "COGNAC post processor". - The file converting function from PDB to UDF is improved. The bond information can be generated with distance between atoms automatically. Moreover, the force field parameters can be assigned to the model on J-OCTA. - A force field verification tool is added to the monomer modeler. - Sheet and spherical fillers can be created based on DPD model to estimate the dispersed structures of nano-composite materials. Also, dispersed structures are able to export to Digimat by using Python script on "COGNAC Modeler". - DPD calculation with the entanglement effect is now available. The entanglement effect is expressed by using the slip-spring between polymer chains on "VSOP".
J-OCTA use OCTA which was developed through industry-university cooperative project in Japan. For more information about OCTA : http://octa.jp/
Phase separation in a hole, using Ohta-Kawasaki model of MUFFIN. Application target is DSA (Directed Self Assembly).
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"J-OCTA Student Edition" is a free software for materials research. Consisting of some basic function extracted from "J-OCTA" advanced simulation system, it is useful for small calculation and validation. Moreover, it is notable that the atomistic molecular modeling tool is available which is not included in "OCTA", open source version of "J-OCTA". Again, it is free software with no license required. Try it! Feel free to use it for your material research.	Phase separated structure of ternary system calculated by using SUSHI.
Benefits J-OCTA Student Edition is available for - Full atoms / coarse-grained (Bead-Spring) modeling and analysis of results for the MD simulation (using OCTA-COGNAC and LAMMPS). - Prediction of phase separated and interfacial structure, using mean field (SCF) Theory (OCTA-SUSHI) and Dissipative Particle Dynamics (OCTA-COGNAC and LAMMPS) - Classical MD simulation using the result of other theories such as SCFT.
How to start J-OCTA: Download installer from OCTA-BBS (http://49.212.191.63/phpBB/). (Registration is required for first OCTA-BBS user. Click REGISTER button.) (1) Download OCTA8 (Free Software) from the top page of OCTA-BBS. (2) Download J-OCTA Student Edition from "Downloads J-OCTA Student Edition" after login. A license is not required for OCTA and J-OCTA Student Edition.
Caution : J-OCTA Student Edition has some limitations. Please refer https://www.j-octa.com/products/student/ for more detail.
J-OCTA supports coarse-grained model (model dealing with groups of atoms as units). It can calculate phenomena on a larger scale and over a longer period using coarse-grained model. Coarse grained potential : Estimation of coarse grained potential is possible by using (Iterative) Boltzmann Inversion method based on the atomistic model. Estimated Non-Bonding and Bonding potential are used in Coarse Grained Molecular Dynamics simulation directly. Reverse mapping : Atomistic molecular structure can be created by using the result of Coarse Grained Molecular Dynamics. By using Reverse mapping function, the relaxed structure of atomistic polymer chains is obtained.	Coarse Grained model   Radial Distribution Function for coarse grained units, and Coarse Grained Potential (non-bond).
Digimat Users' Meeting 2015   Sept 29-Oct 1, 2015 Melia Sky Hotel, Barcelona, Spain J-OCTA will participate as exhibitor. Please visit our booth. 2015 AIChE Annual Meeting   November 8-13,2015 at Salt Palace Convention Center, Salt Lake City, UT, USA J-OCTA has a booth in exhibition hall. Come and see latest J-OCTA. J-OCTA User Conference 2015   November 27,2015 at Tokyo Conference Center - Shinagawa, Tokyo, Japan J-OCTA User will join and share a latest technical information regarding molecule simulation and J-OCTA. PACIFICHEM 2015   December 15-17,2015 at Hilton Hawaiian Village, Honolulu, Hawaii, USA J-OCTA has a booth in exhibition hall. Come and see latest J-OCTA.
Please forward this information to the person who will be interested in simulation system for polymer and J-OCTA.
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