Post-doctoral fellowship of the JSPS on the project : Development of polaritonic metasurface for thermal radiation control for space technology

LIMMS/CNRS-IIS IRL 2820 (Laboratory for Integrated Micro Mechatronic Systems) is an international laboratory between the French CNRS (Centre National de la Recherche Scientifique) and Institute of Industrial Science (IIS), The University of Tokyo, located in Komaba, Tokyo. Since its creation in 1995, LIMMS has welcomed more than 380 researchers from France and Europe.

LIMMS opens a new postdoctoral position in the laboratory of Professor Masahiro Nomura, Institute of Industrial Science, University of Tokyo. Prof. Nomura investigates thermal management in advanced semiconductors, fundamental physics of nanoscale phonon/thermal transport, thermal radiation, and integrated quantum science.

　The Nomura Laboratory is seeking a highly motivated research scientist/postdoctoral researcher to lead an innovative project focused on developing polaritonic metasurfaces with unique thermal radiative properties. This position offers an exceptional opportunity to work at the forefront of nanoscale thermal transport and advanced materials design, contributing to groundbreaking research that bridges theoretical physics, advanced nanofabrication, and cutting-edge thermal characterization techniques.

　One of the important research direction, we develop thermal radiation cooling for space application. The successful candidate will spearhead a comprehensive research program aimed at engineering polaritonic metasurfaces that exhibit unprecedented control over thermal radiation. This cutting-edge project encompasses the theoretical design and development of thermal polaritonic metamaterials using advanced electromagnetic simulation tools such as SCUFF-EM and COMSOL. The research involves the creation of high-quality metasurfaces using state-of-the-art cleanroom facilities, followed by detailed spectral characterization to investigate wavelength-dependent radiative properties using FTIR spectrometry. The project culminates in direct quantitative measurements of radiative heat flux using advanced 2ω/3ω measurement platforms to validate theoretical predictions and demonstrate practical applications. The primary goal of this research is to engineer subwavelength surface microstructures that can effectively control surface phonon polariton (SPhP) emission, thereby achieving wavelength-dependent thermal emission shaping and thermal rectification effects. The project will investigate a range of materials including SiO₂, SiC, and phase-change materials such as VO₂ to optimize metasurface performance. A particular focus will be placed on demonstrating radiative flux enhancement and understanding the temperature-dependent thermal emission control mechanisms that emerge from carefully engineered surface geometries.

　Our research focuses on the fascinating field of nanoscale heat transport and thermal radiation. At the nanoscale, heat transport is characterized by ballistic transport and wave-like behavior, opening up exciting possibilities for advanced heat conduction control with potential applications in various fields of technology and energy management. With 15 years of dedicated research, our laboratory has established itself as a world leader in this field, consistently producing top-tier research and maintaining strong collaborative relationships with leading institutions across Europe (particularly in France), the United States, Singapore, and other countries, including both universities and industry partners. Notably, our research has significant practical applications in thermal management for cutting-edge semiconductors, an area of great interest to major semiconductor companies. This industrial relevance adds an exciting dimension to our work, bridging fundamental physics with real-world technological challenges. We offer flexibility in choosing research themes within our field of expertise, taking into account the preferences and interests of the applicant.

　Our laboratory is equipped with various semiconductor processing facilities, measurement devices, and workstations, enabling the fabrication of semiconductor nanostructures, electrical and thermal conduction measurements, optical measurements, and simulations. This environment provides an excellent opportunity for researchers to acquire a wide range of technical skills. Our diverse team consists of about 30 members, with approximately 70% being international researchers, creating a rich, multicultural research environment. If you are passionate about exploring the frontiers of nanoscale physics and developing next-generation thermal management technologies with potential industry-changing applications, we encourage you to apply and join our dynamic, international team at the forefront of this exciting field.

Fellowship periods and periods for arrival in Japan: Two years starting between April 1^st and September 30, 2026

Rewards: Paid equivalent to the JSPS Post-Doctoral position

1. Airfare: A round-trip air ticket (based on JSPS’s regulations)

2. Maintenance Allowance: 362,000 JPY per month

3. Miscellaneous: A setting-in allowance of 200,000 JPY, Overseas travel insurance, etc.

Skills: 

We are seeking motivated postdoctoral researchers with the following qualifications:

1. Strong background in semiconductor physics, solid-state physics, and quantum mechanics

2. Experience in optical measurements, electrical measurements, or cleanroom work is advantageous but not required

3. Experience with electromagnetic simulation software (COMSOL, SCUFF-EM, or similar)

4. Willingness to apply your unique skills and knowledge to bring new perspectives to our heat conduction research

5. Enthusiasm for exploring innovative approaches in nanoscale thermal management

We welcome candidates who can contribute fresh ideas and potentially open new research directions in our field. Join our international team and help advance the frontiers of thermal radiation with potential applications in cutting-edge semiconductor technology.

Goals:

 As a postdoctoral researcher in our laboratory, you will follow a structured program designed to maximize your research output and skill development:

Initial 3 Months: Intensive training and skill acquisition led by experienced team members.

First Year: Produce and submit at least one research paper to a peer-reviewed journal.

Two-Year Objective: Achieve significant research results worthy of publication in a high-impact journal, collaborating closely with other lab members.

Throughout your tenure, you will be an integral part of our research team, contributing to ongoing projects and potentially initiating new research directions. We are committed to fostering an environment that supports your growth as a researcher and helps you achieve these ambitious yet attainable goals in the exciting field of nanoscale heat transport. This experience will provide you with valuable skills and publications to advance your career in academia or industry.