Dani Keshav ＤａｎｉＫｅｓｈａｖ

Researcher Number	80630946
Other IDs
Affiliation (Current)	2025: 沖縄科学技術大学院大学, フェムト秒分光法ユニット, 教授
Affiliation (based on the past Project Information) *help	2023 – 2024: 沖縄科学技術大学院大学, フェムト秒分光法ユニット, 教授 2019 – 2023: 沖縄科学技術大学院大学, フェムト秒分光法ユニット, 准教授
Review Section/Research Field	Principal Investigator Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related / Medium-sized Section 13:Condensed matter physics and related fields / Basic Section 35030:Organic functional materials-related Except Principal Investigator Medium-sized Section 13:Condensed matter physics and related fields / Basic Section 30020:Optical engineering and photon science-related
Keywords	Principal Investigator electron microscopy / photoemission / Momentum microscopy / Time-resolved ARPES / excitons / trions / momentum microscopy / 2D semiconductors / time-resolved ARPES / Angle resolved … More / Higher Harmonic / Extreme Ultraviolet / Twisted 2D materials / Nano-APRES / Moire pattern / Twisted 2D material / Nano-ARPES / XUV-PEEM / harmonic generation / High order / Extreme UV light source / PEEM / ultrafast dynamics / perovskite photovoltaics / time-resolved PEEM / time-resolved / photovoltaic films / Perovskite / dynamics / ultrafast / photovoltaics / perovskite / microscopy / Time-resolved … More Except Principal Investigator 凝縮体 / 光電子分光 / 励起子 / 周波数変換 / 時間界面 / テラヘルツ波 Less

Real and reciprocal spacetime imaging of many-body excitons and quantum phase control
- Principal Investigator
  
  辻直人
- Project Period (FY)
  2024 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 13:Condensed matter physics and related fields
- Research Institution
  The University of Tokyo
Imaging trions and their dynamics in momentum spacePrincipal Investigator
- Principal Investigator
  
  Dani Keshav
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
- Research Institution
  Okinawa Institute of Science and Technology Graduate University
Next generation XUV source for time-resolved nano-ARPES and PEEMPrincipal Investigator
- Principal Investigator
  
  Dani Keshav
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Challenging Research (Pioneering)
- Review Section
  
  Medium-sized Section 13:Condensed matter physics and related fields
- Research Institution
  Okinawa Institute of Science and Technology Graduate University
Frequency conversion of terahertz waves with temporal boundary
- Principal Investigator
  
  Miyamaru Fumiaki
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 30020:Optical engineering and photon science-related
- Research Institution
  Shinshu University
Imaging ultrafast photocarrier trapping in perovskite photovoltaic materialsPrincipal Investigator
- Principal Investigator
  
  Dani Keshav
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 35030:Organic functional materials-related
- Research Institution
  Okinawa Institute of Science and Technology Graduate University

All 2023 2022 2021 2020 2019

All Journal Article Presentation

[Journal Article] Local Nanoscale Phase Impurities are Degradation Sites in Halide Perovskites2022
- Author(s)
  Macpherson Stuart、Doherty Tiarnan A. S.、Winchester Andrew J.、Kosar Sofiia、Johnstone Duncan N.、Chiang Yu-Hsien、Galkowski Krzystof、Anaya Miguel、Frohna Kyle、Iqbal Affan N.、Nagane Satyawan、Roose Bart、Andaji-Garmaroudi Zahra、Orr Kieran W. P.、Parker Julia E.、Midgley Paul A.、Dani Keshav M.、Stranks Samuel D.
- Journal Title
  
  Nature
  
  Volume: - Issue: 7918 Pages: 294-300
- DOI
  10.1038/s41586-022-04872-1
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Journal Article] Ultrafast Frequency-Shift Dynamics at Temporal Boundary Induced by Structural-Dispersion Switching of Waveguides2021
- Author(s)
  Miyamaru Fumiaki、Mizuo Chihiro、Nakanishi Toshihiro、Nakata Yosuke、Hasebe Kakeru、Nagase Shintaro、Matsubara Yu、Goto Yusuke、P?rez-Urquizo Joel、Mad?o Julien、Dani Keshav M.
- Journal Title
  
  Physical Review Letters
  
  Volume: 127 Issue: 5 Pages: 053902-053902
- DOI
  10.1103/physrevlett.127.053902
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K05304, KAKENHI-PROJECT-20K05360
[Journal Article] Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy2021
- Author(s)
  Kosar Sofiia、Winchester Andrew J.、Doherty Tiarnan A. S.、Macpherson Stuart、Petoukhoff Christopher E.、Frohna Kyle、Anaya Miguel、Chan Nicholas S.、Madeo Julien、Man Michael K. L.、Stranks Samuel D.、Dani Keshav M.
- Journal Title
  
  Energy and Environmental Science
  
  Volume: 14 Issue: 12 Pages: 6320-6328
- DOI
  10.1039/d1ee02055b
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Journal Article] Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites2020
- Author(s)
  T.A.S.Doherty, A.J.Winchester, S.Macpherson, D.N.Johnstone, V.Pareek, E.M.Tennyson, S.Kosar, F.U.Kosasih, M.Anaya, M.Abdi-Jalebi, Z.Andaji-Garmaroudi, E.L.Wong, J.Madeo, Y.-H.Chiang, J.-S.Park, Y.-K.Jung, C.E.Petoukhoff, G.Divitini, M.K.L.Man, C.Ducati, A.Walsh, P.A.Midgley, K.M.Dani, S.D.Stranks
- Journal Title
  
  Nature
  
  Volume: 580 Issue: 7803 Pages: 360-366
- DOI
  10.1038/s41586-020-2184-1
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Presentation] Imaging excitons in momentum space2023
- Author(s)
  Keshav Dani
- Organizer
  MRS Fall Meeting 2023
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K18270
[Presentation] Imaging Photoexcited Phenomena - in real and momentum space2023
- Author(s)
  Keshav Dani
- Organizer
  Simon Symposium
- Invited
- Data Source
  KAKENHI-PROJECT-22K18270
[Presentation] Viewing light-induced phenomena through the lens of a Momentum Microscope2023
- Author(s)
  Keshav Dani
- Organizer
  HOWDI (HeterOstructures de van der Waals de basse Dimensionalite)
- Invited
- Data Source
  KAKENHI-PROJECT-22K18270
[Presentation] Imaging photoexcited phenomena in real and momentum space2022
- Author(s)
  Keshav M. Dani
- Organizer
  Materials Science and Engineering (MSE) Colloquium
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Presentation] Understanding the role of nanoscale defect clusters in hybrid perovskite photovoltaics with time-resolved photoemission electron microscopy,2022
- Author(s)
  Keshav M. Dani
- Organizer
  NanoGe Spring Meeting 2022
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Presentation] 時間壁を用いたテラヘルツ波の周波数変換2021
- Author(s)
  宮丸文章，水尾千紘，中西俊博，中田陽介，長谷部翔，長瀬慎太郎，松原祐有，後藤祐輔，Joel Perez-Urquizo, Julien Madeo, Keshav M. Dani
- Organizer
  テラヘルツ科学の最先端VIII
- Invited
- Data Source
  KAKENHI-PROJECT-19K05304
[Presentation] Observing momentum-forbidden dark excitons in monolayer WSe2 via time-, space and angle-resolved photoemission spectroscopy2020
- Author(s)
  Keshav M. Dani
- Organizer
  NOEKS15
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05637
[Presentation] Terahertz frequency change by rapidly switching propagation mode in waveguide structure2019
- Author(s)
  F. Miyamaru, C. Mizuo, K. Hasebe, T. Nakanishi, Y. Nakata, J. Madeo, and K. Dani
- Organizer
  OptX-Nano 2019 conference
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05304
[Presentation] Frequency shift of terahertz waves by changing waveguide modes in time domain2019
- Author(s)
  F. Miyamaru, C. Mizuo, K. Hasebe, T. Nakanishi, Y. Nakata, J. Madeo, and K. Dani
- Organizer
  The 4th A3 Metamaterials Forum 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K05304

1. Miyamaru Fumiaki (20419005)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
2. 中西俊博 (30362461)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
3. 辻直人 (90647752)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. 高吉慎太郎 (80710722)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 村上雄太 (70845289)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. 金子竜也 (30784433)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Dani Keshav Ｄａｎｉ Ｋｅｓｈａｖ

Research Projects

Research Products

Co-Researchers

Real and reciprocal spacetime imaging of many-body excitons and quantum phase control

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Imaging trions and their dynamics in momentum spacePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Next generation XUV source for time-resolved nano-ARPES and PEEMPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Frequency conversion of terahertz waves with temporal boundary

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Imaging ultrafast photocarrier trapping in perovskite photovoltaic materialsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Local Nanoscale Phase Impurities are Degradation Sites in Halide Perovskites2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Ultrafast Frequency-Shift Dynamics at Temporal Boundary Induced by Structural-Dispersion Switching of Waveguides2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites2020

Author(s)

Journal Title

DOI

Data Source

[Presentation] Imaging excitons in momentum space2023

Author(s)

Organizer

Data Source

[Presentation] Imaging Photoexcited Phenomena - in real and momentum space2023

Author(s)

Organizer

Data Source

[Presentation] Viewing light-induced phenomena through the lens of a Momentum Microscope2023

Author(s)

Organizer

Data Source

[Presentation] Imaging photoexcited phenomena in real and momentum space2022

Author(s)

Organizer

Data Source

[Presentation] Understanding the role of nanoscale defect clusters in hybrid perovskite photovoltaics with time-resolved photoemission electron microscopy,2022

Author(s)

Organizer

Data Source

[Presentation] 時間壁を用いたテラヘルツ波の周波数変換2021

Author(s)

Organizer

Data Source

[Presentation] Observing momentum-forbidden dark excitons in monolayer WSe2 via time-, space and angle-resolved photoemission spectroscopy2020

Author(s)

Dani Keshav ＤａｎｉＫｅｓｈａｖ