Complex 3-Dimensional Microscale Structures for Quantum Sensing Applications

TL;DR

This paper introduces a new two-photon polymerization technique to create complex 3D microscale structures hosting quantum sensors, enabling advanced sensing applications with high resolution and integration capabilities.

Contribution

It presents a novel fabrication method for customizable 3D quantum sensor structures using two-photon polymerization, overcoming previous manufacturing limitations.

Findings

Achieved sub-microscale resolution down to 400 nm.

Demonstrated high sensitivity optical sensing of temperature and magnetic fields.

Enabled integration of quantum sensors into microfluidic and electronic platforms.

Abstract

We present a novel method for fabricating highly customizable three-dimensional structures hosting quantum sensors based on Nitrogen Vacancy (NV) centers using two-photon polymerization. This approach overcomes challenges associated with structuring traditional single-crystal quantum sensing platforms and enables the creation of complex, fully three-dimensional, sensor assemblies with sub-microscale resolutions (down to 400 nm) and large fields of view (>1 mm). By embedding NV center-containing nanoparticles in exemplary structures, we demonstrate high sensitivity optical sensing of temperature and magnetic fields at the microscale. Our work showcases the potential for integrating quantum sensors with advanced manufacturing techniques, facilitating the incorporation of sensors into existing microfluidic and electronic platforms, and opening new avenues for widespread utilization of quantum sensors in various applications.