Updated on 2026/05/21
大気中で動作する周波数変調原子間力顕微鏡（FM-AFM)の開発に取り組んでいます。FM-AFMとは、探針と試料の間に働く「相互作用力の変化」を「カンチレバーの共振周波数の変化」として検出して表面観察を行う走査プローブ顕微鏡です。自作装置で一原子を識別する原子分解能が得られる顕微鏡で、原子単位の構造制御や物性解析が可能な表面界面解析手法です。最近は、自作装置を用いた固体表面/固液界面の分子膜観察もやってます。
2026年は官学交流のクロスアポイントメント制度で、内閣府 科学技術・イノベーション推進事務局へ出向しています。
博士（理学） ( 2016.3 金沢大学 )
表面物理
ナノ物理
プローブ顕微鏡
Nanotechnology/Materials / Thin film/surface and interfacial physical properties
Kanazawa University Graduate School of Natural Science and Technology
2013.4 - 2016.3
Kanazawa University Graduate School of Natural Science and Technology
2011.4 - 2013.3
Kanazawa University Faculty of Science Department of Physics
2007.4 - 2011.3
Cabinet Office, Government of Japan Secretariat of Science, Technology and Innovation Policy
2026.4
Yokohama City University
2026.4
Yokohama City University School of Science Assistant Professor
2019.10 - 2026.3
Kanazawa University Institute of Science and Engineering
2016.4 - 2019.9
レーゲンスブルク大学（ドイツ） 派遣研究員
2015.2 - 2015.12
THE JAPAN SOCIETY OF APPLIED PHYSICS
日本物理学会
表面真空学会
Hiroaki Ooe, Toyoko Arai
Langmuir 2026.4
Bromination-Enhanced Chiral Interactions for Triphenylamine on Au and Ag(111) Reviewed
Hiroaki Ooe, Kazushiro Takasugi, Takashi Yokoyama
The Journal of Physical Chemistry C 2025.3
Hiroaki Ooe, Takashi Yokoyama
Physical Chemistry Chemical Physics 26 ( 17 ) 12939 - 12946 2024
Two-Step On-Surface Synthesis of One-Dimensional Nanographene Chains Reviewed
Hiroaki Ooe, Kaede Ikeda, Takashi Yokoyama
The Journal of Physical Chemistry C 127 ( 16 ) 7659 - 7665 2023.4
Layer-by-layer dissolution and recovery of KBr(001) surfaces covered with a nanometer-thick water film caused by a pressing tip controlled by frequency modulation atomic force microscopy Reviewed
Hiroaki Ooe, Toyoko Arai
Applied Physics Express 12 115002 2019.10
Amplitude dependence of image quality in atomically-resolved bimodal atomic force microscopy Reviewed
Hiroaki Ooe, Dominik Kirpal, Daniel S. Wastl, Alfred J. Weymouth, Toyoko Arai, Franz J. Giessibl
APPLIED PHYSICS LETTERS 109 ( 14 ) 141603 2016.10
Evaluation and optimization of quartz resonant-frequency retuned fork force sensors with high Q factors, and the associated electric circuits, for non-contact atomic force microscopy Reviewed
Hiroaki Ooe, Mikihiro Fujii, Masahiko Tomitori, Toyoko Arai
REVIEW OF SCIENTIFIC INSTRUMENTS 87 ( 2 ) 023702 2016.2
Resonance frequency-retuned quartz tuning fork as a force sensor for noncontact atomic force microscopy Reviewed
Hiroaki Ooe, Tatsuya Sakuishi, Makoto Nogami, Masahiko Tomitori, Toyoko Arai
APPLIED PHYSICS LETTERS 105 ( 4 ) 043107 2014.7
Comparative FM-AFM Observations of PDMS on HOPG in Liquid and Air
Hiroaki OOE, Toyoko ARAI
International Conference in Non Contact Atomic Force Microscopy 2025.8
PDMS ultrathin film formed on HOPG observed by FM-AFM
2025.9
Heterochiral self-assembly of hexaphenylbenzene 1D chains prepared by on-surface polymerization
Hiroaki OOE, Takashi YOKOYAMA
2023.3
Chiral-selective self-assemblies of brominated triphenylamine molecules on Au and Ag(111).
H. Ooe, K. Takasugi, and T. Yokoyama
2024.9
Lattice-conserved polymerization of self-assembled Br2-HPB molecules on Au(111)
Hiroaki OOE, Takashi YOKOYAMA
2024.3
On-surface Reactions of Br2-HPB molecules within the Self-assembled Structure Investigated by STM
Hiroaki OOE, Takashi YOKOYAMA
2023.12
Br2-HPB polymerization progressing without loss of array ordering
Hiroaki OOE, Takashi YOKOYAMA
2023.9
On-surface two-step synthesis of Nanographene 1D-chain observed by STM
Hiroaki OOE, Kaede IKEDA, Takashi YOKOYAMA
2022
Examination of force detection by thermal deflection of qPlus equipped in STM system
Hiroaki OOE
2021.9
Force detection by using thermal oscillation of qPlus sensor
2022
Chiral-selective self-assembly of brominated triphenylamine on Au(111) and Ag(111) surface identified by STM
Hiroaki OOE, Kazushiro TAKASUGI, Takashi YOKOYAMA
The 10th International Symposium on Surface Science 2024.10
自然科学研究科長賞
2016.3 金沢大学
大江弘晃
固液界面で進行する有機結晶成長プロセスのAFM解析
Grant number：26K08199 2026.4 - 2029.3
日本学術振興会 科学研究費助成事業 基盤研究(C)
大江 弘晃
Authorship：Principal investigator
Grant amount：\4550000 （ Direct Cost: \3500000 、 Indirect Cost：\1050000 ）
超微小振幅FM-AFMを用いた潮解性結晶の単原子レベル溶解析出反応の力学的制御
Grant number：23K04585 2023.4 - 2026.3
日本学術振興会 科学研究費助成事業 基盤研究(C)
大江 弘晃
Authorship：Principal investigator
Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）
2024年度には、音叉型水晶振動子を素材とした力センサーを用いてKBr(001)面の加湿大気中におけるFM-AFM観察、およびスピンコーターでシリコーンコートしたマイカとグラファイトの無制御大気中におけるFM-AFM観察を実施した。
KBrのFM-AFM観察について、乾燥雰囲気(43%RH)からKBrの潮解がギリギリ生じない湿度(74%RH)まで加湿していくと、大気からの汚染物が吸着した表面、吸着物の減少と消失、水の吸着と溶解による不安定化とAFM像が変化していく様子を得た。また、不鮮明ではあるが全振幅100pm以下の超小振幅でKBr原子コラゲーションを得ることもできた。
スピンコーターでシリコーンコートしたマイカとグラフェンの観察では、スピンコート直後から１時間程度は、固体/コーティング溶液界面が密な固体シリコーンレイヤーが形成されて入る可能性があることが分かった。固体シリコーン層のみかけ高さは約1.4nmで、単分子または２分子厚と予想される。さらに、時間経過で固体シリコーン相は観察できなくなったことから、展開単分子膜のように表面コート時の特殊な状況で形成された準安定構造が残っており、徐々に溶液中に溶解して消失した可能性がある。
Development of STM/Thermal Vibration AFM for Simultaneous Measurement of Single Molecular Conductivity and Rigidity
Grant number：20K15175 2020.4 - 2023.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists
OOE Hiroaki
Authorship：Principal investigator
Grant amount：\3770000 （ Direct Cost: \2900000 、 Indirect Cost：\870000 ）
For simultaneous measurement of complex atomic/molecuar properties on solid surface (e.g. correlation of conductivity, stiffness, and elasticity of molecular wires on a metal surface), we tried to develop conpound scanning probe microscopy having functions of Scaning Tunneling Microscopy (STM) and thermalvibration Atomic Force Microscopy (AFM).
Conventionally, the thermalvibration amplitude of AFM cantilever, which is only a few picometers, has hard to use for the force measurement. However, we have adopted the integrated FFT signal of the AFM cantilever vibration to improve the signal-to-noise ratio. Consequently, we have demonstarted that the force detection by thermalvibration with a wide dynamic range from attractive to repulsive interactions.
原子間力顕微鏡用の熱振動を応用した力検出法の確立
2020.4 - 2021.3
公益財団法人 横浜学術教育振興財団 2020年度研究助成
Authorship：Principal investigator
atomically dissolution control on deliquescent material surface in air conditions
Grant number：17K14115 2017.4 - 2019.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
Ooe Hiroaki
Authorship：Principal investigator
Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）
We developed frequency modulation atomic force microscopy which operable in the wide humidity range even in dry(RH20%) to humid(RH90%) air conditions. Using custom-build instruments, the solid-water interracial property when a small amount of water adsorbed on KBr(001) plane was analyzed with the high resolution observation.
In the dry air conditions as RH30%-45%, KBr(001) cleavage plane was uniformly covered by water with the thickness of 1 or 2 molecules, and dissolution/deposition of KBr was almost stopped. In slightly humidified air as RH50%-60%, thin water film with the thickness of 3nm was formed on KBr. When the KBr crystal is covered by nano-meter water film, atomically dissolution of crystal surface can be mechanically induced by applying the precisely controlled force using the FM-AFM technique.
Atomic level analysis of the interfaces between solid surfaces and ultrathin water films for control of the interface reactions
Grant number：16H02076 2016.4 - 2019.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)
Grant amount：\42120000 （ Direct Cost: \32400000 、 Indirect Cost：\9720000 ）
The water vapor in the air can cover solid surfaces in a thickness of a few nm, which is named “nanometer-thick water film”. We found that a firm network of water molecules was formed in the hydration layers of the nanometer-thick water film on the solid surface. In addition, defective structures of the network persisted from the first hydration layer to the second hydration layer over the solid surface. The nanometer-thick water film was revealed to be “quasi-liquid” over the solid surface, which means the intermediate state between solid and liquid. Using the frequency modulation atomic force microscope (FM-AFM) developed in this research, we successfully obtained images of the network over the surface with atomic and molecular resolutions.
