Bio

Hajime Fujita (Haji) is a Ph.D. candidate co-advised by Prof. Tom Soh and Prof. Eric Kool. His research asks how short nucleic acid sequences achieve high affinity and specificity for small molecules, and how that recognition can be read out in a biosensor. He pairs array-scale mutational analysis with biophysical measurements to infer the binding mechanism.

Honors & Awards

  • Funai Overseas Scholarship, Funai Foundation of Information Technology
  • Stanford Graduate Fellowship, Stanford University

Education & Certifications

  • Master of Science, Stanford University, BIOE-MS (2025)
  • MS, Tokyo Institute of Technology, Bioengineering (2021)
  • UROP, Singapore University of Technology and Design, Engineering Product Design (2019)
  • BS, Tokyo Institute of Technology, Bioengineering (2020)

Patents

  • Hajime Fujita, Toshinori Fujie. "Japan Patent 2021173651 Biometric device", Tokyo Institute of Technology, Nov 1, 2021

Contact

Additional Info

Links

Current Research and Scholarly Interests

Biosensors

All Publications

  • Paper-Based Wearable Ammonia Gas Sensor Using Organic-Inorganic Composite PEDOT:PSS with Iron(III) Compounds ADVANCED MATERIALS TECHNOLOGIES Fujita, H., Hao, M., Takeoka, S., Miyahara, Y., Goda, T., Fujie, T. 2022

    View details for DOI 10.1002/admt.202101486

    View details for Web of Science ID 000767634300001

  • Design and fabrication of a flexible glucose sensing platform toward rapid battery-free detection of hyperglycaemia JOURNAL OF MATERIALS CHEMISTRY C Fujita, H., Yamagishi, K., Zhou, W., Tahara, Y., Huang, S., Hashimoto, M., Fujie, T. 2021; 9 (23): 7336-7344

    View details for DOI 10.1039/d1tc00667c

    View details for Web of Science ID 000657264100001

  • Battery-free wearable sensors with ion-selective electrodes embedded in passive resonant antenna circuits for wireless sweat monitoring SENSORS AND ACTUATORS B-CHEMICAL Ito, Y., Yamamoto, O., Saito, M., Fujita, H., Fujie, T., Goda, T. 2025; 442

    View details for DOI 10.1016/j.snb.2025.138098

    View details for Web of Science ID 001509158500007

  • Facile coating of low-molecular-weight stretchable adhesive films leveraging carbodiimide-to-urea conversion and gallic acid for enhanced adhesion MATERIALS ADVANCES Sekita, D., Fujita, H., Mizuno, Y., Horii, T., Hata, T., Fujie, T. 2025

    View details for DOI 10.1039/d4ma01102c

    View details for Web of Science ID 001409839000001

  • R2R-Based Continuous Production of Patterned and Multilayered Elastic Substrates with Liquid Metal Wiring for Stretchable Electronics ADVANCED MATERIALS TECHNOLOGIES Kawakami, H., Nagatake, K., Ni, S., Nakamura, F., Takano, T., Murakami, K., Ohara, I., Isano, Y., Matsuda, R., Suwa, H., Higashi, R., Kanto, M., Saito, M., Fujita, H., Araki, T., Ozaki, S., Ueno, K., Horii, T., Fujie, T., Ota, H. 2024

    View details for DOI 10.1002/admt.202400487

    View details for Web of Science ID 001240803400001

  • An intrinsically semi-permeable PDMS nanosheet encapsulating adipose tissue-derived stem cells for enhanced angiogenesis. Biomaterials science Takuma, M., Fujita, H., Zushi, N., Nagano, H., Azuma, R., Kiyosawa, T., Fujie, T. 2024

    Abstract

    Cell encapsulation devices are expected to be promising tools that can control the release of therapeutic proteins secreted from transplanted cells. The protein permeability of the device membrane is important because it allows the isolation of transplanted cells while enabling the effectiveness of the device. In this study, we investigated free-standing polymeric ultra-thin films (nanosheets) as an intrinsically semi-permeable membrane made from polydimethylsiloxane (PDMS). The PDMS nanosheet with a thickness of 600 nm showed intrinsic protein permeability, and the device fabricated with the PDMS nanosheet showed that VEGF secreted from implanted adipose tissue-derived stem cells (ASCs) could be released for at least 5 days. The ASC encapsulation device promoted angiogenesis and the development of granulation tissue 1 week after transplantation to the subcutaneous area of a mouse. This cell encapsulation device consisting of PDMS nanosheets provides a new method for pre-vascularization of the subcutaneous area in cell transplantation therapy.

    View details for DOI 10.1039/d4bm00460d

    View details for PubMedID 38804980

  • Transparent and Breathable Ion Gel-Based Sensors toward Multimodal Sensing Ability ADVANCED MATERIALS TECHNOLOGIES Isano, Y., Fujita, H., Murakami, K., Ni, S., Kurotaki, Y., Takano, T., Isoda, Y., Matsuda, R., Nakamura, F., Nishitai, Y., Ochirkhuyag, N., Inoue, K., Kawakami, H., Okubo, Y., Ueno, K., Fujie, T., Ota, H. 2022

    View details for DOI 10.1002/admt.202200209

    View details for Web of Science ID 000814433900001

  • Flexible Induction Heater Based on the Polymeric Thin Film for Local Thermotherapy ADVANCED FUNCTIONAL MATERIALS Saito, M., Kanai, E., Fujita, H., Aso, T., Matsutani, N., Fujie, T. 2021; 31 (32)

    View details for DOI 10.1002/adfm.202102444

    View details for Web of Science ID 000659028300001

https://orcid.org/0000-0002-0497-1918