Keshav M. Dani

Employment

• Okinawa Inst. Of Sci. & Tech., Grad. Univ., Okinawa, Japan
  Full Professor, Femtosecond Spectroscopy Unit                                 
  Nov 2023 - Present
  Associate Professor, Femtosecond Spectroscopy Unit                       
  Apr 2018 - Oct 2023
  Assistant Professor, Femtosecond Spectroscopy Unit                        
  Oct 2011 - Mar 2018
   
• Los Alamos National Laboratory, Los Alamos, NM
  Directors Post-doctoral Fellow at the Center for Integrated Nanotechnologies
  Sep 2007 – Aug 2011
   
• Lawrence Berkeley National Laboratory, Berkeley, CA
  Post-doctorate in Material Science Division                                                           
  Sep 2006 – Aug 2007

Selected Honors And Awards

• 20th JSPS Prize, Japanese Society for Promotion of Science (JSPS) 2023
• Winner, Breakthrough in Physical Sciences, Falling Walls Foundation, 2023
• Outstanding Editor, Light: Science & Applications, 2022
• Director’s Postdoctoral Fellowship, Los Alamos National Lab, 2007
• Steven Chu Award, American Physical Society, California section, 2005
• Eric Temple Bell Prize, Caltech, 2000
• Honorable mention, First-Step to Nobel Prize in Physics, Polish Academy of Sciences, 1992

Selected Publications

• Local nanoscale phase impurities are degradation sites in halide perovskite, Nature 607 294-300 (2022).
• Structure of the moire exciton captured by imaging its electron and hole, Nature 603 247-252 (2022).
• Experimental measurement of the intrinsic excitonic wave function, Science Advances 7 (17), eabg0192 (2021).
• Directly visualizing the momentum-forbidden dark excitons and their dynamics in atomically thin semiconductors, Science 370 (6521), 1199 (2020). 
• Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites, Nature 580, 360 (2020). 
• Imaging the motion of electrons across semiconductor heterojunctions, Nat. Nanotechnol. 12, 36 (2017).

Selected Invited Talks​

• Exciton dynamics in momentum space
  Tutorial, Conference on Lasers and Electro‐Optics (CLEO), San Jose, May 2023.
• Probing excited state and charge transfer dynamics at 2D interfaces
  MRS Spring Meeting, San Francisco, Apr 2023.
• Imaging photoexcited phenomena in real and momentum space
  Materials Science and Engineering (MSE) Colloquium, Stanford University, USA, Apr. 2022.
• Imaging the internal particles of excitons in 2D semiconductors
  Physical Society of Japan (JPS), Spring Meeting, online, Mar. 2022.
• Tracing the dynamics of excitons using time‐ and angle‐resolved photoemission spectroscopy
  American Physical Society March Meeting, Chicago, USA, Mar. 2022.
• Understanding the role of nanoscale defect clusters in hybrid perovskite photovoltaics with time-resolved photoemission electron microscopy
  NanoGe Spring Meeting 2022, Malaga, Spain, Mar. 2022.
• Visualizing Dark Exciton Wavefunctions with Ultrafast u‐ARPES
  Hot Topics in Ultrafast Science, Ultrafast Optical Phenomena Technical Group, OSA, Jun. 2021.
• Using time‐resolved XUV ARPES to probe excitons
  Chez Pierre Condensed Matt. Physics Seminar, MIT, USA, May 2021.
• Probing the dark side of the exciton with time‐resolved ARPES
  Quantum Materials and Devices Seminar, Harvard, USA, Apr. 2021.
• Imaging the motion of charge with time‐resolved Photoemission Electron Microscopy
  Conference on Lasers and Electro‐Optics, San Jose, May 2019.
• Cinematography of Charge: Making movies of electrons in motion in 2D semiconductors
  MRS Fall Meeting, Boston, USA, Dec. 2017.
• Imaging the motion of electrons in 2D semiconductor heterostructures
  American Physical Society March Meeting, New Orleans, USA, Mar. 2017.
• Time-Resolved Photoemission Microscopy of Semiconductor Heterostructures
  SPIE Photonics West, San Francisco, USA, Feb. 2017.
• Sub-picosecond optical switching with a negative index metamaterial.
  March Meeting, American Physical Society, Portland, OR, USA, Mar. 2010.
• Ultrafast spectroscopy of the Quantum Hall system.
  Ultrafast Phenomena in Co-operative Systems, Gordon Research Conference, ITALY, Feb. 2008.