Related Experiment Video
Updated: Jan 6, 2026
04:57
Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
909
Homogeneous Free-Standing Nanostructures from Bulk Diamond over Millimeter Scales for Quantum Technologies
Andrea Corazza1, Silvia Ruffieux1, Yuchun Zhu2
1Department of Physics, University of Basel, CH-4056 Basel, Switzerland.
Nano Letters
|September 26, 2025
Summary
Researchers developed a novel method for fabricating ultra-thin, atomically smooth diamond membranes. This breakthrough enables scalable, high-performance quantum devices for sensing and communication applications.
Area of Science:
- Quantum physics and materials science
- Nanotechnology and advanced fabrication
Background:
- Optically addressable spin qubits in diamond are key for quantum technologies.
- Current diamond fabrication methods face challenges in surface quality, uniformity, and scalability.
Purpose of the Study:
- To develop a scalable fabrication method for high-quality diamond membranes.
- To overcome limitations in current nano- and microstructuring techniques for diamond.
Main Methods:
- Utilized a refined photolithography-based strategy for diamond nano- and microstructuring.
- Produced millimeter-scale, thin (down to 70 nm) single-crystal diamond membranes.
Main Results:
- Achieved highly parallel membranes with atomically smooth surfaces (Rq < 200 pm).
- Fabricated large fields of free-standing, homogeneous photonic nano- and microstructures.
- Demonstrated contamination-free membranes suitable for quantum applications.
Conclusions:
- The developed method offers enhanced scalability and robustness for quantum device fabrication.
- The technique is compatible with heterogeneous integration, paving the way for advanced quantum technologies.
