By Qnami
Capture surface magnetic fields at the atomic scale Key Features - Low drift Scanning NV Magnetometer (SNVM) for room temperature operation - Ultimate magnetic resolution with Qnami Quantilever™ probes - Quantum performance to map a wide range of magnetic signals - Single electron spin sensitivity to capture magnetic signals at a single atomic layer - Qualitative and quantitative analysis modes for robust sample investigation Designed for ease of use - Turnkey instrument requires no NV expertise to use and record images - No optical realignment required for confocal microscope - Safe and quick probe and sample exchange - Intuitive software interface for automated sample approach and NV readout - Programmable LabQ control and measurement software Upgradeable with selected options - DC magnetometry signal and speed boost modes - AC magnetometry and pulsed measurement modes - Advanced Scanning Probe Microscopy (SPM) functionality - External magnet Patented The only Scanning NV magnetometer produced under license to patent family WO2014051886A1 from Harvard University Applications Magnetometry - Magnetic nanostructures and spintronics applications - Domain wall analysis, exotic magnetic textures - Ferromagnets, antiferromagnets, multiferroics - 2D materials Thermometry - Surface temperature imaging - Locate thermal defects - Identification of nanoscale thermogenic sources Specifications Confocal and Widefield Microscopy Objective scanner and optics - Confocal optical unit with up-straight photon collection - Main objective 100x Plan Apo infinity corrected, NA=0.7, working distance: 6mm - 30x30x10μm³ XYZ closed-loop piezo objective scanner for ultra-stable long term spectroscopic laser alignment, resolution 1nm Laser and optics - Optical diode laser λ=515±5nm, spectral bandwidth (FWHM) < 1.5nm - Tunable output power 0.1μW-20.0mW at focal point - Digital modulation with 150MHz, 2.5ns rise/fall time Detection - Video system including variable LED illumination for widefield microscopy - Industry USB CMOS widefield camera - In-coupling of the fluorescence signal into a 50μm multimode fiber SPM Platform Sample Size Max. 40x50mm², 15mm thickness Coarse sample positioning stage - 5x5x15mm³ motorized approach system for XYZ sample positioning, with positioning resolution < 1μm - 18mm z-range for safe probe and sample exchange Precise nanoscale sample scanner - 100x100x15μm³ XYZ piezo closed-loop sample scanner - XY non-linearity of 0.05% - Z non-linearity of 0.05% Low noise, highly stable sample scanner - 0.1nm RMS in XY dimension in 200Hz bandwidth with capacitance sensors ‘on’ - 0.02nm RMS in XY dimension in 100Hz bandwidth with capacitance sensors ‘off’ - < 0.04nm RMS Z capacitance sensor @ 1000Hz bandwidth - Long term stability: < 2nm/hour over 24 hours measurement time (at +/-0.5 °C temperature variation) - Scanner resonant frequencies 7kHz in XY and 15kHz in Z NV Magnetometry Magnetic sensitivity Better than 2μT/ √ Hz in continuous wave operation mode (CW-ODMR: Continuous Wave – Optically Detected Magnetic Resonance spectroscopy) Magnetic spatial resolution Entirely defined by the NV center distance to the sample surface (insertion depth plus scanning height) Optimized nanoscale magnetic sensors - Patented Qnami Quantilever TM Sensor Technology - Optimized for high optical throughput and unprecedented resolution - Natively compatible with Qnami ProteusQ TM - A starter pack of 10 Qnami Quantilever TM MX probes is included - Available with three insertion depths to meet application-specific requirements: 10nm, 18nm, or 28nm - Available in three orientations for optimal application choice Microwave Antenna - Integrated miniaturized microwave near-field antenna - 4x4x4mm³ xyz manual stage, with < 1μm resolution for precise near-field antenna positioning - Additional inspection side camera + LED side illumination for easy alignment NV Bias Magnet NV bias magnet mounted on objective (vertical direction: -2.5 to +2.5mT, manually adjustable) Quantum Control Software LabQ - Full set of measurement modules for Scanning NV Magnetometry - Backbone provided by the Qudi framework - Open-source and python based - Modern and intuitive user interface rooted in the Qt framework Features - Native support for storing data in Gwyddion file format - Integrated high-level scripting ability via Jupyter Notebooks - Multilevel access points via generic python API - One-click automated calibration, measurement and optimization and routines such as - fluorescence auto tracking - optimal measurement parameter determination - smart optimization methods - robust fitting algorithms - probe parameter determination - safe probe approach mechanism Quantum Control Hardware Microwave Control - Full frequency bandwidth: 0.3-4GHz, operating frequency bandwidth: 2.5-3.5GHz - Resolution: < 10Hz - Maximum power: > 30dBm, with 0.1dB power resolution, gain compensated for flat power distribution across the whole frequency bandwidth Single Photon Detection - Dark counts: < 250Hz - Dead time: < 35ns, with a count rate of up to 20Mcts/s Connections - 4 General-purpose Input Output (GPIO) channels with TTL level specifications - 1 Gigabit Ethernet connection port for high bandwidth data transmission - Standard FC fiber connector to count the optical signal NV Imaging Modalities NV modes for DC Magnetometry (measured simultaneously to sample topography) - Magnetic Hilltop Mode: quenching measurement for qualitative analysis to locate areas with strong magnetic fields - Single Magnetic Contour Mode: single iso-B measurement to localize in the sample a specific magnetic field value - Full Magnetic Topography Mode: determine the full B magnetic landscape of the sample Confocal/SPM imaging modalities - Closed-loop constant height modes for stray magnetic field measurements - Tuning Fork based AFM with standard shear-force and normal force modes for sample topography - Confocal microscopy mode for optical imaging of probe and sample Measurement - Hardware Trigger to start experiments - Continuous live probe monitoring - External access via GPO ports to the electrically translated fluorescence signal of the APD module - Operando measurements (measure a sample under operation, e.g. a chip or similar) DC Magnetometry - Signal and speed boost with Dual Contour Mode (measure simultaneously two adjacent magnetic contour lines within the sample) - Speed upgrade (x 100) of the magnetic topography mode Magnet - Static magnet - Vector magnet AC Magnetometry - Pulse control and sequence creation in own scripts via python API - Noise spectroscopy from kHz to GHz domain (measure the amount of noise in a given frequency bandwidth) - Signal spectroscopy (measure coherent signals in kHz to MHz domains) Advanced SPM functionality - Conductive unit for Conductive AFM (current range: 100fA - 10μA, voltage range: -10V - +7V) - Bias voltage extension module (extends range: -50V - +50V) - STM holder - Signal Access Module - Liquid cell - Sample holders with heating up to 150°C and 300°C Additional AFM head AFM imaging modes: contact, semicontact, non-contact AFM, phase imaging, Magnetic Force Microscopy (MFM), Kelvin Probe Force Microscopy (KPFM), Scanning Capacitance Microscopy (SCM), Electric Force Microscopy (EFM), Piezo Response Force Microscopy (PFM), Lateral Force Microscopy (LFM), Force Curve Measurement (Force Distance (F-D) Spectroscopy and Mapping), Nanolithography - Patented: Qnami ProteusQ TM is the only Scanning NV Magnetometer produced under exclusive license to Harvard patent family WO2014051886A1 - Certified and compliant for the use in lab environments (CE marked) - UPS (uninterruptible power supply) to protect the system from external power instabilities in the mains Optional Upgrades System Accreditation
The ProteusQ provides the necessary power to probe the magnetic homogeneity of these bits with the required spatial resolution and sensitivity, even before electrical characterization. The Qnami ProteusQ has been effectively utilized to image its electrical and magnetic domains. Although the signals from two-dimensional magnets are minuscule, they can still be detected by the ProteusQ, aiding researchers in understanding the textures of these ultrathin magnets. With the Qnami ProteusQ, we can visualize their remaining uncompensated spins, which are found at domain walls, crystalline edges, or within nanostructures. Using the ProteusQ, we successfully imaged ultrascaled nanowires as narrow as 6 nm and demonstrated our ability to capture fragile spin vortices and artificial spin ice textures without causing disturbances. Furthermore, the ProteusQ can quantitatively image microwave emissions from interconnects and antennas.
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Capture surface magnetic fileds at the atomic scale with the Qnami ProteusQ and a next level in precision.
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We engineer exquisitely sensitive NV diamond quantum sensors for academic and commercial customers.
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Quantilever MX+ represents the state-of-the-art quantum diamond tips that deliver the highest demonstrated signal-to-noise ratio for scanning NV magnetometry. The innovative tip design maximizes the light collection efficiency while ensuring an optimal distance between the NV center and the sample surface. Equip Qnami ProteusQ with the Quantilever MX+ quantum diamond tips to further enhance its sensing performance. With their high signal-to-noise ratio, Quantilever MX+ diamond probes unlock the measurement of even weaker magnetic fields. The Product Offer 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 Single Units CHF 2800 1 Quantilever MX+ Starting Pack CHF 5600 2 probes from our Quantilever MX + series and 2 probes from our Quantilever DX series Measure extremely weak magnetic fields 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. Perform SNVM at cryogenic temperatures 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. Perform AC magnetometry Due to the higher signal-to-noise ratio and photon count rates, AC magnetometry protocols benefit drastically from reduced measurement time. Groundbreaking design The latest cutting-edge design advancement in diamond tips made commercially available. Highest precision Up to 3 times higher SNR compared to conventional tip designs. Highly efficient measurements 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. Optimized pillar geometry To effectively guide photons toward optics 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. Improved photonic waveguide To maximize signal collection 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. State-of-the-art fabrication techniques To icrease the signal to noise ratio 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. Diamond Tips for Nanoscale Resolution 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.
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