The Quantilever MX+ probes significantly decreased our data acquisition time – we were able to get publication-quality data in the time it took to train a student on the software and operation of the system. The improved collection efficiency from these tips will enable us to characterize many more samples per day, even in the quantitative full-B imaging mode.
These new tips are a wonderful addition to Qnami’s portfolio and allow us to take measurements in new, previously impossible ways. Because every photon counts, our work directly benefited from the increased fluorescence count rate compared to the conventional design. Especially at low temperatures, where high-quality objectives with high NA and large working distances are difficult to find, the reduced NA of the parabolic tips makes life a lot easier.
| Pillar Geometry | Parabolic |
| Signal-to-noise ratio | 3-times higher than with conventional tip design |
| Magnetic Sensitivity | ~ 3μT/(Hz)1/2 |
| Patent Family | WO2021151796A1 |
| System | Qnami ProteusQ |
The high signal-to-noise ratio and sensitivity of Quantilever MX+ further facilitate the characterization of materials with extremely weak stray fields such as antiferromagnets or multiferroics.
Sample: BiFeO3/GdScO3
Courtesy of: Dr. P. Stevenson (NEU) and Dr. R. Ramamoorthy (UCB)
Quantilever MX+ enables higher photon count rates and directional photon emission with minimal losses allowing the use of objective lenses with small NA and relaxing potential working distance constraints.
Measure magnetic textures in atomically thin van der Waals magnets at cryogenic temperatures becomes easier with Quantilever MX+.
Due to the higher signal-to-noise ratio and photon count rates, AC magnetometry protocols benefit drastically from reduced measurement time.
Image non collinear antiferromagnetic textures using single spin relaxometry will take less time with Quantilever MX+.
The latest cutting-edge design advancement in diamond tips made commercially available.
Up to 3 times higher SNR compared to conventional tip designs.
Record-low laser powers and photon emission into minimal numerical aperture.
The innovative design is the result of a fruitful collaboration with the Quantum Sensing Lab (led by Prof. Patrick Maletinsky) at the University of Basel. The innovation initiated through the work done by Hedrich et al in 2020 and continued through technoloy transfer with the Qnami Quantum Foundry who optimized the fabrication process and made it the third generation of Qnami Quantilevers.
The parabolic shape effectively guides emitted photons toward the collection
optics. The flat end facet ensures the proximity between the NV center and the sample
surface preserving the high spatial resolution in magnetometry measurements.
The parabolic reflector guides on average 80% of the emitted photons toward the collection optics. The concentrated photon flux allows the use of objectives with small NA (<0.5) and relaxes potential working distance constraints.
Signal-to-noise ratio enhanced – parasitic background fluorescence is minimized by optimal nanofabrication. Integration times in the sub-ms range are unlocked through high NV signal and minimized noise leading to improved statistics.
The optimized design of the Quantilever MX+ pillar
maximizes the light collection efficiency while preserving the nanoscale resolution.
Your packaging can be re-used. Ship it back to us and you’ll get a discount on your next order. Questions? Get in touch with Felipe, he’s happy to help.
