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2026.10.13

Non-Classical Chirality of Macromolecular Systems: Functions of Disordered and Non-uniform Polymers

講師：中野環教授（北海道大学　触媒科学研究所）
日時：令和8年10月23日（金）15:30-
場所：南5号館1階 103B 第2会議室

　Ordering molecular and inter-molecular, uniform structures is recognized as important in attaining functionality of a wide range of organic and inorganic materials. On the other hand, we have found several cases in polymer science where disorder and non-uniformity play a role in attaining functionalities. One example is a chiral hyperbranched polyfluorenevinylene designed with inspiration from the fact that optically active natural polymers are often produced in hyperbranched forms, as exemplified by amylopectin and glycogen [1]. This polymer can form an inclusion complex with a large excess of external aromatic molecules without the formation of single crystals of the included molecules, and the amorphous inclusion system exhibits circularly polarized light (CPL) emission at a high anisotropy.
Another example is a chiral linear polyfluorenevinylene having single-handed helical conformation. This polymer bends its chain to form “turns” in the middle of chain, not in the vicinity of chain, and folds into a non-uniform structure in solution. Further, the polymer exhibits efficient CPL emission arising from the turn moieties [2]. These observations may imply that useful functionalities may be attained without relying on classical, highly regulated and uniform chiral structures of polymers represented by helix, as far as polymers are concerned [3]. It is worth investigating whether disordered and non-uniform structures play a role in materials science aiming at specific functions.

[1] Wu P, Pietropaolo A, Fortino M, Bando M, Maeda K, Nishimura T, Shimoda S, Sato H, Naga N, Nakano T, Angew Chem Int Ed. 2023, e202305747.
[2] Wang Q, Son K, Pietropaolo A, Fortino M, Ogasawara M, Ohji T, Shimoda S, Bando M, Nakano T. Chem Eur J. 2024, 30, e202304275-e202304275.
[3] T. Nakano, M. Bando, A. Xing and N. Naga, ChemistryEurope, 2026, 4, e202500449.

連絡教員：物理学系　佐藤　琢哉（内線2716）

https://www.phys.sci.isct.ac.jp/wp/wp-content/uploads/2026/10/452.pdf

セミナー

2026.10.13

Accelerating photonic inverse design

講師：Professor Steven G. Johnson（Massachusetts Institute of Technology, USA（MIT））
日時：令和8年10月22日（木）13:30-
場所：本館3階 345 理学院第2会議室

　Johnson教授は、フォトニック結晶の研究初期からMITにおいて理論側面で分野をリードした著名な研究者で、”Photonic Crystals-Molding the Flow of Light”の著者としても知られています。今回本学を訪問されるにあたって下記の内容で講演を行って頂くことになりましたので、関心のある方はぜひご参加ください。

“Inverse design” is the technique of using large-scale optimization (over thousands or even millions of parameters) to allow the computer to “discover” the best arrangement of materials for a given application, often leading to non-intuitive freeform geometries. In contrast to machine learning, this is typically model-driven optimization, based on accurate first-principles physics simulations, rather than data-driven. However, there are many problems for which simply plugging the most straightforward computational model into an optimization algorithm yields an intractable problem, and non-obvious transformations are required to obtain a good solution with reasonable effort. We illustrate these ideas with several design problems from photonics, including incoherent emission, laser optimization, and the design of optical filters.

連絡教員：物理学系　納富　雅也（内線3831）

https://www.phys.sci.isct.ac.jp/wp/wp-content/uploads/2026/10/123tokubetsu.pdf

セミナー

2026.09.24

Multi-Nucleon Transfer Reactions and the Creationand the Evolution of the Compound Nucleus

講師：Professor Aurel Bulgac（University of Washington, USA）
日時：令和8年10月14日（水）16:00-
場所：本館1階 M-123 講義室及びZoom※

　We present the first implementation of a novel extension of the Generator Coordinate Method (GCM), dubbed the enhanced GCM (eGCM), which is applied to the grazing Multi-Nucleon Transfer (MNT) reaction 48Ca+208Pb near the Coulomb barrier. eGCM incorporates major qualitative differences with either Time-Dependent Hartree-Fock (TDHF) or GCM frameworks used until now for nuclear reactions. We demonstrate that the eGCM framework describes for the first time in a fully quantum microscopic framework the emergence and the time-evolution of Niels Bohr’s 1936 conjectured Compound Nucleus (CN). The thermalization time extracted in eGCM is at least two orders of magnitude larger than the Eigenstate Thermalization Hypothesis (ETH) would predict.

※本 ZOOM セミナーに参加されます場合には、事前に下記より登録を済ませてください。

https://zoom.us/meeting/register/3uxXOglOR7G5vG5LXUVXdQ

当日会場にお越しいただけます方は、登録不要ですので、是非、対面でご参加ください。

連絡教員：物理学系　関澤　一之（内線2463）

https://www.phys.sci.isct.ac.jp/wp/wp-content/uploads/2026/09/451.pdf

セミナー

2026.09.24

Quantum Annealing Applied to Atoms and Molecules

講師：Professor Bhanu Pratap Das（Centre for Quantum Engineering Research and Education, TCG CREST, Kolkata, India）
日時：令和8年10月1日（木）16:00-
場所：本館1階 174 物理学系輪講室

　Quantum annealing (QA) is a computational method for solving optimization problems using quantum effects. It was formulated in its current form by Dr. Kadowaki and Prof. Nishimori at the Tokyo Institute of Technology (now Institute of Science Tokyo) in 1998. Their seminal work led to the construction of the first quantum computer based on QA known as quantum annealer by a company in Canada known as D-wave.
　QA is steadily gaining in importance and has now been applied to a wide range of fundamental and practical problems. An important quantum algorithm in this area is known as the Quantum Annealer Eigensolver (QAE). In my talk, I shall consider recent applications of QAE to atomic and molecular problems and present the results that have been obtained.

連絡教員：物理学系　伊藤　克司（内線2494）

https://www.phys.sci.isct.ac.jp/wp/wp-content/uploads/2026/09/450.pdf

お知らせ
2026.09.18

【重要】2026年10月入学大学院物理学コースオリエンテーション(Zoom)情報[Important] Graduate Program in Physics Orientation (October 2026 Enrollment, via Zoom)
日付：2026年9月29日（火)
時間：10:00開始

日付：2026年9月29日（火) 時間：10:00開始
Date&Time: 2026 Sep 29(Tue) 10:00-
内容：９月29日（火）10時よりZoomにて物理学コースのオリエンテーションを行います。
下記のリンクから参加して下さい。
Content:
The orientation for the Graduate Program in Physics will be held via Zoom on Tuesday, September 29 at 10:00 ＡM.
Please join using the link below.
https://zoom.us/j/99388915490?pwd=2D2dvk43fWVF3vkUbmf798494xgyla.1

meeting ID: 993 8891 5490
passcode: gz5rrb

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