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Seeking a Research Scientist or a Postdoctoral Researcher (W20136)


Physicochemical Soft Matter Research Team
RIKEN Center for Emergent Matter Science
(Laboratory head: Fumito Araoka)

Research Field

Physicochemical Soft Matter Research Team is studying soft-matter systems such as polymers, liquid crystals, gels, colloids, etc., mainly based on physical experiments and analyses. In our research activity, particular attention has been paid to self-organization in liquid crystals and fluidic supramolecular assemblies leading to multifarious structures in which many interesting physical phenomena can emerge due to their inherent softness.

Job title and Job description

Job title

Research Scientist or Postdoctoral Researcher, 1 position

Postdoctoral Researcher is defined as those with a doctoral degree of 5 years or less.
Research Scientist is defined as those with a doctoral degree more than 5 years.

Job description

Physical experiments (microscopy, electrical measurements, spectroscopy, rheology, etc.) and analytical researches on dynamics or topologies in soft matter systems (mainly, liquid crystals).


The candidate should possess a doctoral degree (or are expected to gain a doctoral degree by the day of employment), as well as sufficient research experiences and achievements in the field of soft matter science.
The candidate should be enthusiastic about soft matter researches and is preferred to be skilled in physical experiments and analyses in soft matter such as microscopic observations, thermotropic, electrical and optical measurements, structural analysis, rheology, etc.

Work location

Branch and address

RIKEN Wako (2-1 Hirosawa, Wako, Saitama 351-0198)

Salary and benefits

  • 1.A one-year fixed-term employment contract, renewable based on evaluation, to a maximum 10 years (Research Scientist) or 5 years (Postdoctoral Researcher) of employment.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, work load at the time of contract completion, performance and work attitude and b) the continuation of the employee’s center, laboratory or project and RIKEN’s management situation and budget at the time. In principle, employment contracts will not be renewed for individuals older than 65 years.
  • 3.The employee’s period of fixed-term employment cannot exceed 10 years from the initial date of hire (or 10 years from April 1, 2013 for fixed-term employees already at RIKEN prior to this date).
  • 4.When the center to which the Employee is affiliated is scheduled for a final review in FY2024 and it is decided that the Employee's research will not be continued, the provision given above for projects of limited duration applies and the Employee's contract will not be renewed for the FY2025 year that would extend employment beyond the center's final fiscal year.
  • 5.When the Employee’s research is scheduled to be reviewed in the Employee's 5years from the original date of hire at CEMS, and when it is concluded that there is reason* to believe it will be difficult for the research (or technology development) to be continued, the employment contract will not be renewed for the next year. (*The reason may relate to the Employee's abilities, performance and/or work attitude.)

In principle, the first two months of employment is considered a trial period.
Salary will be commensurate with qualifications and experience. Commuting and housing allowances will be provided. Social insurance will be applied. Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai).
This position falls under the specialized duties discretionary work system; one working day will be calculated as 7 hours and 30 minutes.

Days off include public holidays, New Year's holidays (Dec. 29 - Jan 3), and RIKEN Foundation Day.
No smoking on site (designated smoking areas available).
These and other provisions are in accordance with RIKEN regulations.

RIKEN is promoting a Gender Equality Program by taking various measures to create a workplace where both men and women are able to give full rein to their talents and abilities. When applicants are judged to be equally qualified on the basis of fair and impartial criteria, women applicants will be given preference.

Also, eligible for an exemption from repayment for category 1 scholarship loans provided by the Japan Student Services Organization before fiscal year 2003, and eligible applying for the MEXT Grants-in-Aid for Scientific Research (Kakenhi).

Application and required documents

Required documents

  • 1.Complete CV or CV (with photo and email address)
    • *Write the open call ID “W20136”, indicated in the parentheses next to the job title, in open call ID section in the upper right corner of your CV.
  • 2.List of research achievements and publications
  • 3.PDF reprints of the five representative papers (no more than five)
  • 4.Brief summary of the major achievements and research proposal for future (3 pages of A4 sheets)
  • 5.Name, affiliation, title, phone number, email address of the recommender and two references
  • 6.Applicant’s contact information
  • 7.Recommendation letter from the current supervisor (If not available, a recommendation letter from a substitutive reference will be acceptable).
  • 8.Consent form for handling personal information based on GDPR
    If you are a resident of the European Economic Area (EEA), you are required to submit the document, "Consent form for handling personal information based on GDPR" with your signature.

    *You will find detailed information about General Data Protection Regulation (GDPR) on the following website:
    Data protection | European Commission

How to apply

Please make inquiries to the contact address listed below, then send the PDF formatted application by email at the same contact address. (The recommendation letter must be mailed directly from the reference.)


Open until the position is filled

Handling personal data

Submitted documents are strictly protected under the RIKEN Privacy Policy and will be used only for the purpose of applicant screening. Personal information will not be disclosed, transferred or loaned to a third party under any circumstances without just cause.

Selection process

After application screening, selected applicants will be asked for interview.

Start of Employment

As early as possible after April 1, 2021 (Negotiatable)

Contact Information / Send application to

RIKEN Center for Emergent Matter Science
Physicochemical Soft Matter Research Team (Team Leader: Dr. Fumito Araoka) 2-1 Hirosawa, Wako, Saitama 351-0198
Email: fumito.araoka [at] riken.jp