• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Nanofluidic Thermoelectric Devices Using Two-Dimensional Materials

Research Project

Project/Area Number 23K22681
Project/Area Number (Other) 22H01410 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionThe University of Tokyo

Principal Investigator

徐 偉倫  東京大学, 大学院工学系研究科(工学部), 准教授 (50771549)

Co-Investigator(Kenkyū-buntansha) 大宮司 啓文  東京大学, 大学院工学系研究科(工学部), 教授 (10302754)
江草 大佑  東京大学, 大学院工学系研究科(工学部), 助教 (80815944)
シャミン ジョバイル  東京大学, 大学院工学系研究科(工学部), 特任助教 (00933988)
Project Period (FY) 2022-04-01 – 2026-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2025: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2024: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2023: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2022: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
KeywordsNanofluidics / Electrokinetics / Analytical Chemistry / Nanopore / Two-dimensional material / Nanofabrication / Thermoelectrics / Nanopore technology / Energy conversion / Ion transport / Nnanofabrication / 2D materials
Outline of Research at the Start

In this research project, we aim to construct a 2D nanofluidic thermoelectric system. The thermoelectric nanofluidic system is composed of a thermally insulated thin layer with nanoscale apertures made on two-dimensional materials. We aim to understand fundamental mechanisms of ion transport behavior in confined atomic space with the presence of a temperature gradient. Based on the
obtained information, we will design and optimize a 2D nanofluidic thermoelectric system that enables the huge thermopower conversion efficiency using low-grade heat for internet of things applications.

Outline of Annual Research Achievements

In this fiscal year, we summarized our collaborative work with Osaka University on nanofluidic thermoelectric cooling via the Peltier effect driven by charge-selective ion transport. We demonstrated that the nanopore temperature decreased with increasing transmembrane voltage in dilute electrolyte solutions, whereas the Joule heating effect is dominant at high salt concentrations. This unique characteristic may pave the way for the temperature control at the nanoscale. In the meanwhile, we have developed a method for nanopore fabrication on suspended two-dimensional materials. For a single nanopore, it can be drilled under transmission electron microscopy. Despite the precise fabrication, the process is expensive and time consuming. For practical applications, nanopore arrays are moredesired. On this account, we have developed a method for fabrication of large-scale suspended two-dimensional materials, which is suitable for nanopore array fabrication using lithography methods. Specifically, we have successfully transferred monolayer molybdenum disulfide onto a three-micron opening on a silicon nitride membrane. We first drilled an opening using focused ion beam milling on a silicon nitride membrane on top of a silicon substrate with an opening at its center. A monolayer molybdenum disulfide was transferred on top of the chip to cover the opening using a wet transfer method.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

The progress is accelerated by efficient collaboration. We worked with a research group at Osaka University, which has related experience in the topic. We have frequent online meetings discussing the experimental results to improve our work. In the meanwhile, the smooth teamwork and outstanding graduate students in our lab greatly facilitated the research advances. We also benefitted from our previous experience in nanopore sensing, being a solid foundation of the development of this technology.

Strategy for Future Research Activity

We will develop a lithography-based pore fabrication method for nanopore arrays on monolayer molybdenum disulfide. After that, atomic layer deposition will be conducted to shrink the pores down to the sub-5nm level. Following that, the thermoelectric properties of the nanofluidic system, including the Seebeck coefficient, power density and figure of merit will be experimentally measured and verified by a theoretical model based on the Poisson-Nernst-Planck equations.Finally, the optimal operating conditions will be proposed based on our research.

Report

(2 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (7 results)

All 2024 2023 2022 Other

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Peltier cooling for thermal management in nanofluidic devices2024

    • Author(s)
      Tsutsui Makusu、Yokota Kazumichi、Hsu Wei Lun、Garoli Denis、Daiguji Hirofumi、Kawai Tomoji
    • Journal Title

      Device

      Volume: 2 Issue: 1 Pages: 100188-100188

    • DOI

      10.1016/j.device.2023.100188

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 分子動力学法による電気二重層特性の解明2023

    • Author(s)
      Chewei Ou、王 浩宇、大宮司 啓文、徐 偉倫
    • Organizer
      熱工学コンファレンス2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] A Molecular Dynamics Study on Electroosmotic Transport in Nanofluidic Channels2023

    • Author(s)
      Wei-Lun Hsu
    • Organizer
      SNU-UTokyo Joint Workshop on Numerical Simulations and AI
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ナノ細孔を有する二次元材料を用いた熱電発電の理論解析2022

    • Author(s)
      徐 騫, 大宮司 啓文, 徐 偉倫
    • Organizer
      日本機械学会 熱工学コンファレンス2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Solid-state Nanopore Technology: Challenges and Opportunities2022

    • Author(s)
      Wei-Lun Hsu
    • Organizer
      2022 Japan-Taiwan Precision Medicine, Biomedical Technology and Smart Services Workship
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] http://www.thml.t.u-tokyo.ac.jp/research.html

    • Related Report
      2023 Annual Research Report
  • [Patent(Industrial Property Rights)] Fabrication of sub-10 nm circular nanopores on Two-dimensional materials2022

    • Inventor(s)
      徐偉倫;高元昭秀;Chun-Yen Lee等
    • Industrial Property Rights Holder
      徐偉倫;高元昭秀;Chun-Yen Lee等
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-074270
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report

URL: 

Published: 2022-04-19   Modified: 2024-12-25  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi