Photoscience and Spectroscopy Lab
光化学・分光化学・分析化学の研究室
Department of Applied Chemistry, Chuo University

Katayama Group, Chemical Spectroscopy Lab, Department of Applied Chemistry, Chuo University

Welcome to Katayama Group, Chuo University
We have developed various spectroscopic and microscopic techniques to study the mechanism of photo-induced processes. We are trying to control such processes in a small space such as micro-reactors, surfaces or interfaces. Our interests cover photocatalysis, sensitized solar cell, photofunctional liquid crystal and polymer.

中央大学 理工学部 応用化学科 分光化学システム研究室 片山研のホームページへようこそ。
我々は、様々な分光及び顕微手法を開発して、光科学変化の起因を調べています。
マイクロリアクターや表面・界面など小さな空間で起こる光科学変化を制御することを目標にしています。
光触媒反応や増感型太陽電池、光応答性液晶や光硬化性樹脂を研究しています。

News

  • 2020/5/25
    Paper Accepted
    "Photo-controllable rotational motion of cholesteric liquid crystalline droplets in a dispersion system" authored by Y. Sakai, W. Y. Sohn, and K. Katayama has been accepted for publication in RSC Advances, 10, 21191-21197

    Photocontrollable rotational motion of cholesteric liquid crystal droplets studied by Y. Sakai.
  • 2020/5/22
    Paper Online
    Highlighted on back cover


    "Cooperative Effects of Surface and Interface Treatments in Hematite (a-Fe2O3) Photo-Anode on Its Photo-Electrochemical Performance" authored by M. Inaba, K. Katayama, and W. Y. Sohn has been accepted for publication in Sustainable Energy & Fuels DOI:10.1039/C9SE01081E

    Photocurrent enhancement by hetero-doping from both sides of interfaces studied by M. Inaba.

  • Conference information

    International Symposium on Materials Chemistry for Sustainable Energy in Tokyo, Mar. 6, 2020
    This conferenc is organized for the project entitled "Construction of photo-driven energy carrier system" supported by the Promotion and Mutual Aid Corporation for Private Schools of Japan.

    15:05-15:25
    A New Microscopy for Charge Carrier Mapping of Photocatalytic Materials
    Kenji Katayama

  • 2020/2/25
    卒業研究・修士論文発表会

    学部生9名、修士2名が発表を終えました。
  • 2020/1/27, 28
    新配属生向け研究室説明会のお知らせ

    説明会日程:1/27(月), 28(火)
  • 2020/1/6
    Conference announcement

    We will host The 24th International Symposium on Advanced Display Materialsand Devices (ADMD2020) , held at our university on Oct 16-18, 2020.

  • Conference information

    日本化学会第100回春季年会 in Tokyo, Mar. 22-25, 2020
    This conference was cancelled due to the problem of Corona virus. 3/22 9:00-9:20
    Charge carrier dynamics in photo-devices observed by time-resolved pattern-illumination phase microscopy
    Kenji Katayama

  • 2019/11/27
    Visitor Information

    Prof. T. Hasegawa @ Institute for Chemical Research, Kyoto University
    He gave a lecture on "Molecular assembly studied by Infrared MAIRS, and progress in fluorine chemistry"

    With Prof. Hasegawa
    学部イベントページはこちら。


  • Conference information

    第38回固体・表面光化学討論会 in Miyazaki, Nov. 21-22, 2019
    11/22 10:45-11:15
    マグヘマイト中間層を挿入した高効率ヘマタイト光アノード電極の作製
    徳渕剛志, 孫雲龍, 片山建二

  • 2019/10/8
    Paper Submitted

    "Development of small-scale experiments for the education of chemical engineering and its practice for undergraduates" authored by K. Katayama, R. Ichinose, Y. Konno, W. Y. Sohn, S. Kuwahara, T. Funazukuri has been submitted ChemRxiv, DOI: 10.26434/chemrxiv.9947474.v1

    Long-term effor on the developement of series of small-scale experiments for chemical engineering education, mainly worked by two graduates, Ichinose and Konno.

  • Poster prize announcement

    2019年光化学討論会 in Nagoya, Sep. 10-12, 2019
    Mika Inaba won the student poster prize in the conference, Congratulations!

    Cooperative doping effect in both bulk and surface in hematite for efficient solar water splitting by the facile method


  • Conference Information

    第3回計測インフォマティクス研究会 in Kumamoto, Sep. 18-19, 2019
    9/19 10:45-11:15
    Cosine Similarity Multivariate Curve Resolution法による混合物スペクトル解析
    永井優也,孫 雲龍, 片山 建二

  • 2019/9/10
    Paper Accepted

    "Initial estimation method by cosine similarity for multivariate curve resolution: Application to NMR spectra of chemical mixture" authored by Y. Nagai, W. Y. Sohn and K. Katayama has been accepted for publication in Analyst 2019, 144, 5986 - 5995

    You can calculate the spectra for pure chemicals and their concentration only from mixture spectra developed by Y. Nagai.
  • Conference Information

    Optics of Liquid Crystals 2019 in Quebec City, Canada, Sep. 8-13, 2019
    Invited Lecture
    Sep, 9, 13:30-14:00 Phase Transition Dynamics of Liquid Crystals Observed by Pattern-Illumination Phase Imaging
    K. Katayama

    Sep, 10, 8:40-9:00 Control of photo-induced motion of photo-responsive liquid crystalline droplet
    Y. Sakai, W. Y. Sohn, K. Katayama

  • Seminar Information

    McMaster University in Hamilton, Canada, Sep. 11, 2019
    Seminars at Brockhouse Institute for Materials Research
    Photo-induced charge dynamics in photo-devices -sphotocatalysis, water splitting, solar cells
    K. Katayama


  • Conference Information

    2019年光化学討論会 in Nagoya, Sep. 10-12, 2019
    9/12 3A06 10:40-11:00
    Time-Resolved Spectroscopic Study of Photo-Excited Charge Carrier Dynamics in Hematite Photo-Electrodes
    W. Y. Sohn, K. Katayama

    9/10 1P119
    Cooperative doping effect in both bulk and surface in hematite for efficient solar water splitting by the facile method
    稲葉 未華, 孫 雲龍, 片山 建二


  • Conference Information

    2019年液晶学会討論会 in Tsukuba, Sep. 4-6, 2019
    9/4 PA11
    光誘起変化を利用したトポロジカル欠陥周辺の分子配向変化の顕微観察
    坂上はるか・孫雲龍・片山建二

    9/4 PB08
    パターン光照射位相差顕微鏡による光応答性液晶の光学的非線形性の発現機構の観察とその応用
    宮川美菜子, 孫 雲龍, 片山 建二

  • 2019/8/8
    Paper Accepted

    "Optical motion control of liquid crystalline droplets by host-guest molecular interaction" authored by Y. Sakai, W. Y. Sohn and K. Katayama has been accepted for publication in Soft Matter doi: 10.1039/C9SM01265F

    Liquid crystalline droplets rolled on a substrate by light. The direction of motion depended on the doped molecules. studied by Y. Sakai.
  • Conference Information

    SPIE Liquid Crystals XXIII in San Diego, USA, Aug. 11-15, 2019
    Invited Lecture
    Direct imaging of phase transition of liquid crystals by nanosecond time-resolved transient grating phase imaging
    K. Katayama

  • Seminar Information

    San Diego State University in San Diego, USA, Aug. 15, 2019
    Photo-induced charge dynamics in photo-devices -solar cell, photocatalysis, water splitting
    K. Katayama

  • 2019/7/31
    Paper Online

    "Molecular orientation change nearby topological defects observed by photo-induced polarization/phase microscopy" authored by H. Sakanoue, W. Y. Sohn and K. Katayama is online. in ACS Omega doi:10.1021/acsomega.9b01611

    Dynamics of molecular orientaiton change around topological defects were studied with phase/polarization microscope studied by H. Sakanoue. Rotation/Disordering processes proceed.
  • 2019/7/31
    Paper Online

    "Lifetime mapping of photo-excited charge carriers by the transient grating imaging technique for nano-particulate semiconductor films" authored by M. Ebihara, W. Y. Sohn and K. Katayama has been published in Review of Scientific Instruments 2019, 90, 072905

    First demonstration of nanosecond time-resolved transient grating imaging for nanoparticulate TiO2 film studied by M. Ebihara. Charge carrier dynamics was mapped out.
  • Conference Information

    M. Miyagawa won the poster prize!


    The 23th International Symposium on Advanced Display Material and Devices (ADMD) in Guangzhou, China, Jul. 23-26, 2019

    The following presentation was selected as a poster prize!
    July 24
    Observation of nonlinear response by using pattern-illumination phase microscopy and its application
    M. Miyagawa, W. Y. Sohn, K. Katayama

    Invited Lecture
    July 25, 16:50-17:20
    Photo-controllable active liquid crystalline droplet
    K. Katayama

    July 24
    Molecular orientation change nearby topological defects observed by the photo-induced phase microscopy
    H. Sakanoue, W. Y. Sohn, K. Katayama

    Seminar Information

    Shenzhen Institute of Advanced Technology
    in Shenzhen, China, Jul. 22, 2019

    Photo-induced charge dynamics in photo-devices -solar cell, photocatalysis, water splitting
    K. Katayama

  • Conference Information

    The 29th International Conference on Photochemistry in Boulder, USA, Jul. 21-26, 2019
    Device-Inspired Photochemistry adn Photophysics
    July 23, 15:00-15:20
    Time-resolved Spectroscopic Study of Photo-Excited Charge Carrier Dynamics in Hematite Effect of Re-Growth Treatmetn
    W. Y. Sohn

    July 23, 14:40-15:00
    Lifetime Mapping of Photo-excited Charge Carriers on TiO2 by Transient Grating Imaging
    M. Ebihara

    Inorganic Photochemistry
    July 22, 15:00-15:20
    Cooperative Doping Effect in both Bulk and Surface in Hematite for Efficient Solar Water Splitting by the Facile Method
    M. Inaba

  • 2019/5/27-6/15
    Visitor Information

    Prof. S. Moorthy Babu @ Crystal Growth Center, Anna University, India
    He will visit us to have lecture series of analysis of solid materials for graduate students.
    He has developed various devices such as solar cells, photocatalyst, power semiconductor materials.

    During his lecture

    At the party
    学部イベントページはこちら。

  • 2019/5/23
    Visitor Information

    Dr. Yuko Ueno @ NTT Basic Research Laboratory
    She gave a lecture on sensor devices using graphene

    During her seminar

  • 2019/5/7-5/15
    Visitor Information

    Prof. Ian-Choon Khoo @ Pennsylvania State University, US
    He had lectures on nonlinear optics of liquid crystals.
    He is a pioneer of NLO of LCs, and a chair of the long-lasting SPIE conference, Liquid Crystals.

    During his lecture

  • Conference Information

    The 40th PIERS in Roma, Italy, Jun. 17-20, 2019
    Invited Lecture
    Photo-controllable active liquid crystalline droplet
    K. Katayama


  • Conference Information

    第79回分析化学討論会 in Kitakyushu, May 18-19, 2019
    5/19 E2007 14:45-15:00
    時間変化・周波数変化する分析計測信号からの特徴量抽出
    片山建二

    5/19 E2008 15:00-15:15
    Multivariate curve resolution法による混合物のNMRスペクトルからのスペクトル・組成分離
    永井 優也・片山建二・孫 雲龍

  • 2019/4/8
    Paper Online

    Collaboration with Dr. Lee @ Kyoto Univ


    "Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging" authored by K. Katayama, D. Kato, K-I. Nagasaka, M. Minagawa, W. Y. Sohn, K-W. Lee is accepted for publication in Scientific Reports, 9, 5754 (2019)

    Long-lasting huge optical nonlinearity for liquid crystals is induced by flow-induced reorientation studied by Dr. K-W. Lee, K-I. Nagasaka, M. Minagawa. This is the first demosntration of transient grating imaging technique.
  • 2019/4/1
    Paper Online

    Collaboration with Prof. Shen @ UEC


    "Improving Photovoltaic Performance of ZnO Nanowires Based Colloidal Quantum Dot Solar Cells via SnO2 Passivation Strategy" authored by S. Ozu, Y. Zhang, H. Yasuda, Y. Kitabatake, T. Toyoda, M. Hirata, K. Yoshino, K. Katayama, S. Hayase, R. Wang, Q. Shen is accepted for publication in frontiers in Energy Research, 2019, 7, 11

    Work on Colloidal QDSC. Y. Kitabatake supported to prepare Colloidal QD.
  • 2019/3/24
    卒業式

    卒業式が行われました。学部生8名、修士5名が卒業しました。
    全体卒業式では永井優也君が応用化学科総代を務めました。


  • 2019/3/22
    Paper Online as Supplementary Cover

    Collaboration with Prof. Wang @ Boston College


    "Uncovering Photo-Excited Charge Carrier Dynamics in Hematite Hidden in Nanosecond Range by Heterodyne Transient Grating Technique Combined with Randomly-Interleaved-Pulse- Train Method" authored by W. Y. Sohn, M. Inaba,T. Tokubuchi, J. E. Thorne, D. Wang and K. Katayama is published in Journal of Physical Chemistry C, 2019, 123, 11, 6693-6700



    Charge trapping and recombination processes were newly found for hematite and coated hamatite by randomly interleaved pulse train (RIPT) based transient grating (TG) method by W. Y. Sohn, M. Inaba and T. Tokubuchi

  • Conference Information

    日本化学会 第99春季年会 in Kobe, March 16-19, 2019
    3/18 3E2-58 18:00-18:10
    Lifetime mapping of photo-excited carriers on TiO2 by transient grating imaging
    M. Ebihara, N. Yoshinaga, W. Y. Sohn, K. Katayama

    3/17 2I1-48 16:50-17:00
    Control of photo-induced motion for photo-responsive liquid crystal-line droplet
    Y. Sakai, Y. Dogishi, W. Y. Sohn, K. Katayama

  • 2019/1/22
    Visitor Information

    Prof. Akira Yamakata @ Toyota Technological Institute, Nagoya
    "高性能光触媒の設計を目指した反応機構の解明"
    学部イベントページはこちら。

    Lecture by Prof. Yamakata

  • 2019/1/16, 17
    新配属生向け研究室説明会のお知らせ

    説明会日程が1/16, 17に変更になりました。研究室案内
    参加希望の方はメールにて連絡ください。
  • 2019/1/11
    Seminar Information

    Seminar @ Okinawa Institute of Science and Technology, Okinawa
    "Photo-induced dynamics of photo-devices -solar cell, photocatalysis, water splitting"
    Kenji Katayama

    Dinner with Prof. Qi


  • Conference Information

    第8回ソフトマター研究会 in Tokyo, Dec. 7-8, 2018
    12/7 14:15-14:45
    Direct observation of phase separation processes for themo-responsive polymer solution by transient grating imaging
    片山 建二

    12/7 17:00-20:00
    液晶液滴の光学的運動制御
    土岸義治、酒井陽太、孫雲龍、片山建二

  • 2018/10/18
    Paper featured as back cover

    "Optically induced motion of liquid crystalline droplets" authored by Y. Dogishi, Y. Sakai, W. Y. Sohn, K. Katayama is published in Soft Matter, 2018, 14, 8085-8089

    We could succeed in the photocontrol of active nematic droplet in surfacetant solution, studied by Y. Dogishi, Y. Sakai
  • 2018/10/2
    Visitor Information
    h Prof. Francoise M. Winnik @ University of Helsinki, Finland
    She had a lecture on "Functional Interfaces and Colloids in Nanomedicine"


    Lecture by Prof. Winnik
  • 2018/8/28
    Acceptance of research internship at OIST

    Mika Inaba (master course) was selected for the research internship program at Okinaga Institute of Science and Technology
    She will stay at OIST for 3 months to work on the material anaysis of perovskite solar cells under the guidance of Prof. Yabing Qi

  • 2018/8/28
    JST 若手派遣プログラム採択

    片山がJST主催の「中国政府による日本の若手科学技術関係者の招へいプログラム」に採択されました。 このプログラムでは、Beijing, Hefeiの2都市の大学・研究機関をまわり、相互交流を深めることを目的としています。
    Prof. Katayama was accepted for the dispatch to visit several research facilities and universities in China to have a collaboration and communication with Chinese researchers and administrators. The period is Oct. 22-27.
  • 2018/7/19
    Paper Online

    "Aggregation-induced expansion of poly-(N-isopropyl acrylamide) solutions observed directly by the transient grating imaging technique" authored by D. Kato W. Y. Sohn, K. Katayama is published in ACS Omega, doi:10.1021/acsomega.8b01241
    Anomolous expansion during phase transition found by D. Kato and first publishment of TG imaging

  • Conference Information

    日本分析化学会第67年会 in Sendai, Sep. 12-14, 2018
    Requested lecture 依頼講演
    Photo-response analysis of photo-devices by transient grating phase imaging microscopy
    過渡格子位相差顕微イメージング法による光半導体デバイスの応答解析
    K. Katayama

    A special symposium is organized.
    Extraction of valuable information from the measurement data, using innovative information mathematics
    特別シンポ「最先端情報数理解析を用いた、分析化学データからの情報抽出」をオーガナイズします。
    安藤正浩(早稲田大学),葛西卓磨(理化学研究所),桑谷立(海洋研究開発機構), 永田賢二(産業技術総合研究所), 星野学(科学技術振興機構), 山崎裕一(物質・材料研究機構)の先生方の講演を予定しています。
    ラマン, NMR, X線分析、様々な計測から、美しいデータが抽出される興味深い話ばかりです。ぜひご参加ください。
  • 2018/7/2
    Paper Online
    Collaboration with D. Wang @Boston College

    "Comparative Study of Photo-Excited Charge Carrier Dynamics of Atomic Layer Deposited and Solution-Derived Hematite Films: Dependence of Charge Carrier Kinetics on Surface Orientations" authored by M. Inaba, J. E. Thorne, D. Wang, W. Y. Sohn, K. Katayama is accepted in Journal of Photochemistry and Photobiology A: Chemistry, DOI:10.1016/j.jphotochem.2018.06.048
    Charge carrier kinetics for water oxidation studied by M. Inaba
  • 2018/6/28
    Paper Online

    "Facile and quick preparation of colloid crystals with micron-sized particles by intentionally induced convex flow" authored by Yoshinaga, Naoya; Nakajima, Naoto; Sohn, Woon Yong; Katayama, Kenji is accepted in Chemistry Letters, doi/10.1246/cl.180461
    Very simple but robust method for preparation of colloid crystals found by N. Yosinaga
  • 2018/6/5
    Paper online
    Collaboration with Prof. Ikeda

    "Two-photon actuation of crosslinked liquid-crystalline polymers utilizing energy transfer system" authored by Shota Sasaki, Toru Ube, Kenji Katayama, Masayasu Muramatsu, Hiroshi Miyasaka & Tomiki Ikeda is accepted in
    Molecular Crystals and Liquid Crystals DOI:10.1080/15421406.2018.1466241
  • 2018/4/22
    Paper online

    "Surface-dominant and bulk-dominant processes in the phase recovery of liquid crystals" authored by K-I. Nagasaka, W. Y. Sohn, K. Katayama is accepted in
    Molecular Crystals and Liquid Crystals DOI:10.1080/15421406.2018.1468128
    Isotropic to nematic phase change depended on the LC thickness, studied by K-I. Nagasaka

  • Conference Information

    International Meeting on Information Display (IMID 2018) in Busan, Korea, Aug. 28-31, 2018
    Invited Lecture
    The Origin of optical nonlinearity of liquid crystals revealed by transient grating imaging
    K. Katayama

  • Conference Information

    SPIE Optics+Photonics, Liquid Crystals XXII in San Diego, USA, Aug. 19-23, 2018
    Invited Lecture
    Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
    K. Katayama, Kin-ichiro Nagasaka, Minaka Minagawa, Woon Yoon Sohn

  • Conference Information

    The 40th PIERS in Toyama, Japan, Aug. 1-4, 2018
    Invited Lecture
    Photo-induced Orientation Change of Photo-responsive Liquid Crystals
    K. Katayama


  • Conference Information

    27th International Liquid Crystal Conference in Kyoto, Japan, July. 22-27, 2018
    The origina of optical nonlinearity of liquid crystals revealed by transient grating imaging
    M. Minagawa, K. Nagasaka, W. Y. Sohn, and K. Katayama

    Observation of nonlinear response for dye-doped liquid crystals by using transient grating imaging
    K. Nagasaka, W. Y. Sohn, and K. Katayama


  • Conference Information

    27th PhotoIUPAC in Dublin, Iceland, July. 8-13, 2018
    Uncovering Charge Carrier Dynamics of Hematite Hidden in Nanosecond Range by Transient Grating Technique with Randomly-Interleaved-Pulse-Train Method
    W. Y. Sohn, and K. Katayama

    Comparative study of photo-excited charge carrier dynamics of atomic layer deposited and solution-derived hematite films: dependence of charge carrier kinetics on surface orientations
    M. Inaba, W. Y. Sohn, and K. Katayama


  • Conference Information

    Photonics North 2018 in Montreal, Canada, Jun. 5-7, 2018
    Invited Lecture
    Origin of optical nonlinearity of photo-responsive liquid crystals revealed by transient grating imaging
    K. Katayama


  • Conference Information

    16th Conference of the International Association of Colloid and Interface Scientists in Rotterdam, the Netherlands, May. 21-25, 2018
    Photo-induced motion of liquid crystalline particle including photoactive molecules
    Y. Dogishi, S. Endo, W. Y. Sohn, and K. Katayama

    Facile and quick preparation of colloid crystals by intentionally induced convex flow
    N. Yoshinaga, W. Y. Sohn, and K. Katayama


  • Visitor Information
    h Prof. Francesco Simoni @ Universita' Politecnica delle Marche
    He will visit our group and university and will give three lecture for us.


    With Prof. Simoni and Ikeda
    1st Lecture, 5/10
    "Nonlinear optics of liquid crystals: Basic concepts and observations"

    2nd Lecture, 5/15
    "Nonlinear optics of liquid crystals: Enhanced and nonlinear response and applications"

    3rdLecture, 5/17
    "Optofluidics: optical control and active devices"


  • Meeting Information

    PRESTO Meeting (さきがけ領域会議) in Ishigaki, Japan, May. 11-13, 2018

    "Evaluation of lifetime and mobility of photo-generated carriers in photo-devices by using modulated-light-induced phase microscopy"
    「変調光位相差顕微鏡による光生成キャリヤ寿命・移動物性評価法」
    K. Katayama

  • 2018/1/5
    Conference Information

    日本化学会第98年会 in Chiba, Mar. 20-23, 2018

    4G1-063, 3/23 9:50-10:00
    物理化学-反応->光化学反応(液相・固相・表面・膜)
    ヘマタイトの表面構造に対する光励起キャリヤダイナミクスの依存性
    ○稲葉 未華・THORNE James. E・WANG Duwei・孫 雲龍・片山 建二

    4G1-04, 3/23 9:30-9:50
    Photochemical Reaction (Liquid, Solid, Surface, and Film)
    Photoexcited Charge Carrier Dynamics of Interconnected TiO2 Nanoparticles: Evidence of Enhancement of Charge Separation at Anatase-Rutile Particle Interfaces
    ○SOHN, Woon Yong; SHINGAI, Daiki; IDE, Yusuke; KATAYAMA, Kenji
    3E3-33, 3/22 14:20-14:40
    物理化学-物性->相平衡・相転移
    過渡格子イメージングを用いた熱応答性高分子の相分離過程の直接観察
    加藤 大騎・孫 雲龍・○片山 建二

  • 2018/3/1
    Intensive Lecture @ VISTEC

    3/15-16 Intensive lectures will be given at VISTEC in Thailand.
     "Photochemistry and its applications for photo-devices"

    Requested seminar will be held.
    "Photo-induced dynamics of photo-devices -Solar cells, photocatalysis, water splitting"

    With Prof. Ogawa and studetns @VISTEC
  • 2018/3/1
    Conference Information

    化学工学会第83年会 in Osaka, Mar. 13-15, 2018

    3/14 13:20-15:20
    化学工学分野におけるスモールスケール実験の開発II
    ○市ノ瀬理沙・船造俊孝・孫 雲龍・片山 建二

  • 2018/1/17
    Paper online
    Collaboration with Prof. Ide @NIMS

    "Photoexcited Charge Carrier Dynamics of Interconnected TiO2 Nanoparticles: Evidence of Enhancement of Charge Separation at Anatase-Rutile Particle Interfaces" authored by Shingai, Daiki; Ide, Yusuke; Sohn, Woon Yong; Katayama, Kenji is accepted in
    Physical Chemistry Chemical Physics, 2018, 20, 3484 - 3489.
    Charge transfer dynamics for enhanced P25 TiO2, studied by D. Shingai and W. H. Sohn
  • 2018/1/18
    Prof. Miura @ Hokkaido Univ visted
    1/18 Lecture on "
     「レーザー誘起単一微粒子に基づく単一分子レベル高感度抽出分析法の探索」
     "Ultrasensitive analysis on a single molecular level based on the extraction using a laser-induced single particle"
    He visited us for the collaboration on the microscopic observation of soft matters, etc.

    With Prof. Miura
  • 2018/1/19
    Paper online

    "Response of liquid crystals in the pre-phase transitional state" authored by K. Katayama, D. Kato, K-I. Nagasaka M. Miyagawa, W. Y. Sohn is accepted in
    Molecular Crystals and Liquid Crystals, 657, 89-94, 2017
    Extremely slow dynamics was observed in LC in the pre-transitional state, studied by D. Kato, K-I. Nagasaka, M. Miyagawa
  • 2018/1/5
    Group introduction 研究室紹介 for 学部生

    We are going to introduce our researches for undergraduates on 1/23, 24 from 2 pm.
    研究室の紹介を1/23(Tue), 24(Wed)の14時から1時間ほど行います。
    Please send me an e-mail indicating your preferred date. 参加希望の方は、希望の日にちをメールにて連絡ください。
    Flyer of the event here.
  • 2018/1/5
    Prof. Ogawa@VISTEC visited lab

    Prof. Ogawa from VISTEC visted our lab to discuss the future collaboration on the photocatalytic materials.
    We agreed that our group members will visit his group in March.

    懇親会 孫さん、宮川さん、小川先生
  • 2017/12/06
    集中講義 Intensive Lecture

    12/8-8 北海道大学で集中講義を行います。
    12/8-8 Intensive lectures will be made at Hokkaido University.
     「光化学の基礎から光機能材料まで」(太陽電池・光触媒)
     "Basics of Photochemistry and Application of photofunctional materials -Solar cells and Phootcatalysis-"
    あわせて、講演も行います。
    Requested seminar will be held.
    「ソフトマターの相変化で何が起こるか? -時間分解法・顕微分光法による観察」
    "What happens during the phase transition of soft matter? -Observation by time-resolved techniques and microscopes"

    北大正門前にて喜多村先生・三浦先生・藤井先生と
  • 2017/12/05
    Paper accepted

    "Formation of photo-responsive liquid crystalline emulsion by using microfluidics device" authored byYoshiharu Dogishi, Shun Endo, Woon Yong Sohn, Kenji Katayama is accepted in
    Entropy, 2017, 19(12), 669 DOI:10.3390/e19120669
    Anomolous defect-pattern change of double emulsions made of LC, studied by Y. Dogishi and S. Endo
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