Material Engineering
New Materials, New Opportunities
We engineer molecular materials that embed quantum sensors from the ground up. This includes the controlled growth of large, high-quality crystals—such as pentacene-doped naphthalene and p-terphenyl—enabled by a custom growth apparatus. Beyond crystals, we develop new molecular platforms and polymer-based 3D architectures tailored to host quantum sensors, enabling novel device geometries and expanding the versatility of quantum-sensor applications.

Molecular Systems
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Our first pentacene-doped crystal grown in lab!
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Crystal growth setup with 5 furnaces that can run simultaneously
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Pentacene-doped p-terphenyl crystals with varying pentacene concentration (0.3%, 0.1%, 0.05%)
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Comparison of one of our PDP crystals with a representative NV diamond sample
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Cross section of a growth tube for a pentacene-doped crystal
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A PDP crystal held up to the light to show off size and crystallinity
Novel Sensor Host Architecture
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NV nanodiamonds can be embedded in micron scale 3D printed materials
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Micro-3D printed benchy, scale bar of 200 microns
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~200 micron wide gryoid structure with nanodiamond coated surface
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A section of Michelangelo’s “The Creation of Adam” made used “bubble printed” nanodiamonds
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Confocal image of nanodiamonds (NDs) adhered to the surface of a gyroid microstructure.
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Micron-scale 3D printed “benchy” made with nanodiamond embedded resin
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“Bubble printed” UC Berkeley Cal logo
Latest publications about this work
N. Nunn, S. Milikisiyants, M. Torelli, A. Healey, R. Styles, B. Johnson, J-P. Tetienne, P. Reineck, C. Long, T. Dumm, A. Dalis, H. Abe, T. Ohshima, L. Moon, E. Druga, A. Ajoy, A.I. Shames, A. Smirnov, O. Shenderova [PDF]
Journal of Physical Chemistry C 129, 7493 (2025).
B. W. Blankenship†, Y. Rho†, Z. Jones, T. Meier, R. Li, E. Druga, H. Singh, X. Xia, A. Ajoy*, C. P. Grigoropoulos* [PDF]
arXiv:2502.16434
B. Blankenship, J. Li, Z. Jones, M. Parashar, N. Zhao, H. Singh, R. Li, S. Arvin, A. Sarkar, R. Yang, T. Meier, Y. Rho, A. Ajoy*, C. Grigoropoulos* [PDF] [SI]
Nano. Lett. 24, 9711 (2024)
B. Blankenship†, Z. Jones†, N. Zhao, H. Singh, A. Sarkar, R. Li, E. Suh, A. Chen, C. Grigoropoulos*, A. Ajoy* [PDF] [SI]
arXiv:2307.15233 — Nano. Lett. 23, 9272 (2023)
Spotlighted by Berkeley Engineering: Researchers demonstrate new 3D printing technique for quantum sensors.
M. Gierth, V. Krespach, A. I. Shames, P. Raghavan, E. Druga, N. Nunn, M. Torelli, R. Nirodi, S. Le, R. Zhao, A. Aguilar, X. Lv, M. Shen, C. A. Meriles, J. A. Reimer, A. Zaitsev, A. Pines, O. Shenderova, and A. Ajoy* [PDF]
arXiv:1911.03322 — Advanced Quantum Technologies 2000050 (2020) .
