Postdoctoral Fellow in Machine Learning
Johns Hopkins University Whiting School of Engineering
United States

Postdoctoral Fellow, In situ TEM and Machine Learning at Johns Hopkins University and Sandia National Laboratories

Requisition #: A-84296-3

Status: Full Time

Type: Other

School: Whiting School of Engineering

Department/Program: Department of Materials Science and Engineering

Location City: Baltimore

Location State: MD

Location Zip Code: 21218

Closing Date: Open until filled

To apply:

General Description

Applications are invited for a postdoctoral position at Johns Hopkins University, with a designated visiting scholar position at Sandia National Laboratories (Albuquerque, NM). The position will focus on in-situ transmission electron microscopy (TEM) experiments and machine learning. Experiments will be performed under various combinations of extreme environments utilizing facilities at both the Johns Hopkins University Materials Characterization and Processing Center and the in-situ ion irradiation TEM (I3TEM) facility at Sandia National Laboratories (Albuquerque, NM). This work will involve in-situ ion irradiation coupled with other in-situ stimuli, such as mechanical strain, heating, and various environments and machine learning techniques.

The successful applicant will be part of a dynamic, multi-university team which includes both theoretical and experimental personnel. The focus of the applicant will be to investigate and characterize radiation damage processes in metallic materials, including pure metals and high entropy alloys.

 Ideal candidates will have experience with in-situ and high resolution TEM, sample fabrication including focused-ion beam (FIB) lift-out methods, and defect and microstructural analysis of metallic systems


Basic Qualifications:

  • A Ph.D. in materials science, physics, mechanical engineering, or related disciplines is required.
  • Experience with in situ TEM imaging and diffraction of metallic materials. 
  • Knowledge of crystalline defects and microstructure.
  • Experience image processing and image techniques.
  • Experience in scripting/programming (Python, Matlab, C++) for data processing.
  • Must be comfortable to travel to Sandia National Laboratories in Albuquerque, NM 87123

Preferred Qualifications:

  • Knowledge of aberration corrected high resolution TEM.
  • Experience with machine learning techniques.
  • Ability to disseminate research findings through peer-reviewed articles and presentations.
  • Knowledge of precession electron diffraction and/or electron backscattered diffraction.

Application Instructions

Potential applicants should please apply directly here in Interfolio.  Please include your cover letter, CV, list of names/contacts of three references, and copies of relevant publications.  If you require sponsorship for work authorization, please be sure to include this information in your cover letter.

Any questions, please email   Please put Taheri Postdoc in the subject line. 

To apply for this position, visit:

The Johns Hopkins University is committed to equal opportunity for its faculty, staff, and students. To that end, the university does not discriminate on the basis of sex, gender, marital status, pregnancy, race, color, ethnicity, national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status or other legally protected characteristic. The university is committed to providing qualified individuals access to all academic and employment programs, benefits and activities on the basis of demonstrated ability, performance and merit without regard to personal factors that are irrelevant to the program involved.

The successful candidate(s) for this position will be subject to a pre-employment background check.

If you are interested in applying for employment with The Johns Hopkins University and require special assistance or accommodation during any part of the pre-employment process, please contact the HR Business Services Office at For TTY users, call via Maryland Relay or dial 711.

The following additional provisions may apply depending on which campus you will work. Your recruiter will advise accordingly.

  • During the Influenza ("the flu") season, as a condition of employment, The Johns Hopkins Institutions require all employees who provide ongoing services to patients or work in patient care or clinical care areas to have an annual influenza vaccination or possess an approved medical or religious exception. Failure to meet this requirement may result in termination of employment.
  • The pre-employment physical for positions in clinical areas, laboratories, working with research subjects, or involving community contact requires documentation of immune status against Rubella (German measles), Rubeola (Measles), Mumps, Varicella (chickenpox), Hepatitis B and documentation of having received the Tdap (Tetanus, diphtheria, pertussis) vaccination. This may include documentation of having two (2) MMR vaccines; two (2) Varicella vaccines; or antibody status to these diseases from laboratory testing. Blood tests for immunities to these diseases are ordinarily included in the pre-employment physical exam except for those employees who provide results of blood tests or immunization documentation from their own health care providers. Any vaccinations required for these diseases will be given at no cost in our Occupational Health office.

Equal Opportunity Employer

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Clery Notice of Availability

The Johns Hopkins University Annual Security and Fire Safety Report is available on the University’s website

In keeping with the mandates of the Jeanne Clery Disclosure of Campus Security Policy and Campus Crime Statistics Act (Clery Act), the University’s Annual Report contains statistics of certain crimes that are reported and that occurred on campus, in certain off-campus buildings or property owned or controlled by the University or an officially recognized student organization, and on public property within or immediately adjacent to and accessible from the campus for the three most recent calendar years. Also included are campus security policies including those related to missing student notifications, alcohol and drug use, sexual assault, relationship violence, and stalking, crime prevention, the reporting of crimes, and fire safety policies and statistics. All Johns Hopkins faculty, staff and students are encouraged to read and print out the report at and to report all criminal incidents promptly to your respective security department.

A printed copy of the report may be obtained from the following university security offices or personnel: Homewood (410-516-4631); Peabody Institute (667-208-6608); Medical Institutions (410-614-3473); Applied Physics Laboratory (443-778-4805); Harbor East Campus (410-234-9301); Columbia Center (410-516-9700); SAIS Bologna Center (202-663-5808, Int. +39.051.2917.811); Washington Centers - KSAS (202-663-5808), SAIS (202-663-5808), Carey Business School (202-663-5808); Hopkins-Nanjing Center (202-663-5808, Int. +86.25.8359.2436); Montgomery County Campus (301-294-7011) and Barcelona, Spain (Int. +34.93.542.25.99).

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