News & Updates Archives

[2017.05.04] Delivering an invited lecture at “Charge and Energy Transport in Nanocrystal Assemblies” (CETNA-2017) Workshop that is held at University of Minnesota, USA. The lecture is about field-induced doping of colloidal nanocrystal assemblies, in which I discussed carrier traps and transport as well as their utilizations for novel electronic devices. The workshop itself is organized by scientists who are among the pioneers of the colloidal quantum dot field, Boris Skhlovskii and Al Efros.

[2017.04.21] We did our own version of “March for Science“. Today RIKEN held its Open Day. Different from the other annual Open Day, this year is special since we also celebrate our centennial year and the naming of element #113, which was invented here, as Nihonium. There were around 10000 peoples (young and old) visited us and enjoyed interaction with scientist. Through this, we educate people about the importance and the significance of scientific advances in our daily life and in our understanding on how universe and things work.

[2017.04.14] Daniel Balazs has finished his 3-months research stay in our team at Riken. He is returning to University of Groningen to finish his PhD degree.

[2017.04.01] Another good news, Shin-kun is starting to continue his Master`s research in our colloidal quantum dot team. Also starting today, a new postdoc is joining the greater Emergent Device Research Team, who is Dr. Masaro Yoshida.

[2017.04.01] A new research project on thermoelectric properties of colloidal quantum dot assemblies has been sponsored by a major funding, “Grant-in-Aid for Young Scientist A” (KAKENHI-Wakate A) from The Japan Society for Promotion of Science (JSPS) . The project will run until Spring 2020.

[2017.03.14] Presenting two talks at The 64th Japan Society of Applied Physics Spring Meeting 2017 at Pacifico Convention Center, Minato Mirai, Yokohama. One talk was in the phonon engineering symposium and the other one was in one of the solar cell symposium. Daniel also had his chances to promote his research works by presenting two talks at this conference as well.

[2017.02.13] Our bachelor student, Daiki Shin, has just successfully defended his bachelor thesis.

[2017.01.18] Attending CEMS-QPEC Symposium on Emergent Quantum Materials at The University of Tokyo, where I give a presentation on thermoelectric of colloidal quantum dots.

[2017.01.15] Welcoming Daniel Balazs, a PhD student from Prof. Maria Loi`s group at The University of Groningen. He was also my former master`s student. He is joining our team in Riken as visiting researcher under the JSPS Short-Term Pre-/Post-doctoral Fellowship for European. He will stay for 3 months until April this year.

[2016.12.12] Our paper on strain-modulated charge transport in flexible PbS quantum dot field-effect transistors has just been published in Advanced Electronic Materials. This work was a result of collaboration together with University of Groningen, The Netherlands, The University of Tokyo, and University of Erlangen-Nurnberg, Germany.

[2016.12.05] Hosting Prof. Maksym V. Kovalenko from ETH Zurich, Switzerland who is one of our main collaborators. He will deliver an invited talk at “2016 International Workshop on Supramolecular Chemistry and Functional Materials(CEMSupra 2016)” that is organized by our center in a picturesque hot spring resort in Manza, Gunma.

[2016.11.28] Our paper on tunable doping in PbS quantum dot field-effect transistors has just been published in APL Materials. This work was a result of collaboration together with University of Groningen, The Netherlands, The University of Tokyo, and University of Erlangen-Nurnberg, Germany.

[2016.11.02] Welcoming Liming Liu, a PhD student (D1) from Prof. Takuzo Aida`s group of Department of Applied Chemistry, University of Tokyo, who join our team to do research on colloidal quantum dots. For the whole 3 years of PhD project, she will jointly supervised by me and Dr. Yasuhiro Ishida, the team leader of Emergent Bioinspired Soft Matter Research Team.

[2016.10.26] Receiving the “2016 Indonesian Young Materials Scientist Award” from The Materials Research Society of Indonesia.

[2016.10.24] Delivering an invited talk at The Materials Research Society of Indonesia (MRS-ID) Meetings in Bandung, Indonesia. The lecture in the Energy Harvesting, Storage, Converting & Saving Applications Symposium was about novel energy converting devices of colloidal quantum dot solids.

[2016.10.01] A new project related with colloidal quantum dot research has been started under Specific Project Investigation (SPI), sponsored by The Japan & Science Technology Agency (JST). It will run until Spring 2017.

[2016.09.21] Delivering an invited talk at The European Materials Research Society (E-MRS) Fall Meetings at Warsaw University of Technology, Poland. The lecture in the Flexible Electronic Sensor Symposium was about the recent advancements on polymer-wrapped semiconducting single-walled carbon nanotubes and the related materials for transistors, sensors and energy harvesting devices.

[2016.09.14] Presenting two talks at The 77th Japan Society of Applied Physics Autumn Meeting 2016 at Toki Messe, Niigata. One was about thermoelectric of colloidal quantum dots, and the other was about charge carrier transport in some new types of quantum dot assemblies.

[2016.09.01] A new project on “Thermal Transport Properties of Nanostructured Materials” is started. It will run until Spring 2018 and funded by RIKEN Incentive Research Grant.

[2016.08.10] A feature article (Inside Out) about “my scientific career and life” appeared in August edition of Oyo Butsuri, the scientific bulletin of The Japan Society of Applied Physics (JSAP).

[2016.06.08] Hosting Dr. Ward van der Stam from University of Utrecht, The Netherlands, who visited RIKEN and gave seminar on nanocrystal superstructures.

[2016.06.01] Welcoming Shin-kun, a B4 (bachelor) student from Department of Applied Physics, University of Tokyo, who join our team to do bachelor research on colloidal quantum dots under my supervision.

[2016.05.26] Attended The 9th International Conference on Quantum Dots, which was held in Jeju Island, South Korea. It was the 2nd time I attended this important conference series. There I delivered an oral talk on thermoelectric device of ultra-thin-film of colloidal quantum dot solids. Together with that, I also presented a poster presentation on carrier control in quantum dot assemblies by new kinds of ionic liquids.

[2016.04.04] Attended The 7th Nanoscience with Nanocrystals International Conference, at Philipps Universität Marburg, Germany. I presented an oral talk on field-induced doping on colloidal nanocrystals assemblies and its implication on thermoelectric properties.

[2016.03.20] Presenting a talk at The 63rd Japan Society of Applied Physics Spring Meeting 2016 at Tokyo Institute of Technology. The talk was about thermoelectric properties of colloidal quantum dot solids.

[2016.02.02] Our paper on double-gated PbS quantum dot field-effect transistors has just been published in Advanced Electronic Materials. This work was a result of collaboration together with University of Groningen, The Netherlands and ETH Zurich, Switzerland.

[2016.01.15] Our book chapter in The Encyclopedia of Nanoscience and Nanotechnology will soon appear.

[2016.01.14] Attended CEMS International Symposium on Supramolecular Chemistry and Functional Materials (CEMSupra 2016) at The University of Tokyo. In an appointed CEMS talk, I presented our recent results on the development of novel energy harvesting devices based on colloidal quantum dot solids.

[2015.12.21] Giving an invited lecture at “One Day Seminar of Materials Science”, which was held at Institut Teknologi Bandung, Indonesia. There I give an overview about the recent developments of emergent materials and devices, including quantum dots and various energy harvesting devices.

[2015.12.12] Attended and organized “CEMS Topical Meeting on Emergent 2D Materials” at RIKEN, Wako. I presented a poster talk on building up 2D materials from colloidal quantum dots.

[2015.11.30] Our paper on the investigation of anomalous carrier transport properties in transistors of large-diameter single-walled carbon nanotube network has just been published in Advanced Electronic Materials. This work is a result of collaboration together with University of Groningen and University of Wuppertal.

[2015.10.31] Attended CEMS Camp at Kinugawa Onsen, close to Nikko.

[2015.09.29] A paper on high mobility organic thin film transistors based on DNTT-polystyrene blends has just been published in Advanced Materials. This work is a result of collaboration among Teijin Corp., Emergent Molecular Function Research Group and our team (Emergent Device Research Team) in RIKEN.

[2015.09.19] Attended the Autumn Meetings of The Physical Society of Japan (JPS), which was held in Kansai University, Osaka (September 16th-19th). I presented talk on fundamental transport properties in the assembly of colloidal quantum dots.

[2015.09.16] Attended the Autumn Meetings of The Japan Society of Applied Physics (JSAP), which was held in Nagoya Congress Center (September 13th-16th). The Autumn Meetings became much bigger than many of JSAP Meetings that I have ever attended, and the atmosphere was different, much refreshed and more international. There I presented two oral talks about electronic transport in colloidal quantum dots.

[2015.08.17] Our paper on new kinds of polymer-wrapped semiconducting single-walled carbon nanotubes (RUG-Polyera Corp. collaboration) that appeared in Advanced Electronic Materials is highlighted as the inside front cover of issue 8 of the journal.

[2015.07.21] Giving an invited seminar lecture at Condensed Molecular Materials Laboratory (CMM, Kato Chief Scientist) of RIKEN. The lecture was about “Electronic Transport of Low Dimensional Hybrid Nanomaterials”.

[2015.07.13] A result of collaboration with Energy & Environmental Material Lab of Institut Teknologi Bandung and The National Research Center of Nanotechnology – ITB, on perovskite materials for solar cells, is appeared in Advanced Materials Research and Production.

[2015.07.09] Giving an invited seminar lecture at Graduate School of Frontier Sciences, The University of Tokyo (Kashiwa Campus), hosted by Prof. Junichi Takeya. The lecture was about “Ambipolar Transistors of Organic Single Crystals and Hybrid Nanomaterials”.

[2015.06.30] Attended The 16th International Conference on the Science and Application of Nanotubes (NT`15) in Nagoya (June 28th~July 3rd 2015). Presented two poster talks. Off course, both are about single-walled carbon nanotubes transistors.

[2015.06.06] A paper on new kinds of polymer-wrapped semiconducting single-walled carbon nanotubes, which was a result of collaboration together with Polyera Corp., has just been published in Advanced Electronic Materials.

[2015.05.11] A paper, which was a result of collaboration between two groups in Groningen (Photophysics & Optoelectronics Group [my former group] and Physics of Nanodevices Group, of ZIAM),  has just been published in ACS Applied Materials & Interfaces.

[2015.03.08] Attended American Physical Society (APS) March Meetings in San Antonio, Texas (2-6 March 2015). Presenting talk on Colloidal Quantum Dot Transistors.

[2015.02.17] A paper of my PhD student in Groningen (M. Insan Nugraha) about trap states in PbS Nanocrystals has been just published in Advanced Materials.

[2015.01.10] The review paper on organic single crystal light emitting transistor, which was written together by Prof. Shu Hotta (Kyoto Institute of Technology) has been selected as “The 30 most accessed articles in Journal of Materials Chemistry C in 2014”.

[2014.12.31] Will attend American Physical Society (APS) March Meetings, San Antonio, Texas (2-6 March 2015)

[2014.12.18] Giving a lecture at Advanced Meson Science Laboratory of RIKEN Nishina Center, intended for Indonesian & Malaysian PhD students about “Electronic Transport in Nanomaterials”.

[2014.12.13] Attending CEMSupra 2014 at Manza Onsen, Gunma, Japan. Presenting oral talk and poster.

[2014.11.24] A paper of my PhD student in Groningen (Widianta Gomulya) about carbon nanotubes selection  has just been published in Carbon.

[2014.11.01] Joining RIKEN Center for Emergent Matter Science (RIKEN-CEMS), Japan as Research Scientist.

[2014.10.29] Leaving my post as PostDoc at Zernike Institute for Advanced Materials, University of Groningen, The Netherlands.

[2014.09.27] Presenting invited talk at Symposium “Organic and Hybrids: Materials, Devices and Physics” in The Materials Research Society of Indonesia (MRS-ID) Meetings, Denpasar, Bali, Indonesia.

[2014.08.21] My Bachelor research student (Joost Calon) has just received his Bachelor diploma.

[2014.07.19] A paper of my PhD student (Vladimir Derenskyi) about carbon nanotube transistor has been published in Advanced Materials.

[2014.07.15] A review paper about carbon nanotubes selection and purification has been published in Account for Chemical Research. It was written under collaboration with Prof. Ullrich Scherf, Univ. of Wuppertal, Germany.

[2014.06.12] A paper about band gap determination of colloidal nanocrystal devices has been published in Advanced Materials.

[2014.05.11] Attending International Conference on Quantum Dots (QD 2014) in Pisa, Italy. Presenting both oral talk and poster.

[2014.04.28] The review article about Organic Semiconductor Laser has been selected to become the cover for Journal of Materials Chemistry C.

[2014.03.19] A paper of my Master student (Daniel Balazs, now also doing PhD) about charge carrier traps in colloidal nanocrystal transistor has been published in Applied Physics Letters.

news and updates started on March 2014.

Advertisements
%d bloggers like this: