Superhigh q cavity

Manufactured by Bruker

The Superhigh Q cavity is a high-performance laboratory equipment designed for research applications. It provides a very high-quality factor (Q-factor) for enhanced signal detection and analysis. The core function of this product is to enable precise measurements and characterization of various samples and materials.

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Lab products found in correlation

Elexsys e500 epr spectrometer, by Bruker (1 mentions) Itc503, by Oxford Instruments (1 mentions) Er 036tm teslameter, by Bruker (1 mentions) E500 spectrometer, by Bruker (1 mentions) Esr 900, by Bruker (1 mentions) E scan food analyzer, by Bruker (1 mentions)

4 protocols using superhigh q cavity

EPR Spectroscopy of Heme-Bound L-PGDS

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Two hundred micromolar WT L-PGDS in 20 mM HEPES, 100 mM NaCl, pH 7.5 with 200 μM heme (1 : 1) complex was used to record the X-band (9.3835 GHz) CW EPR spectra with a Bruker Biospin Elexsys E500 EPR spectrometer ﬁtted with a Bruker superhigh Q cavity and a ﬂow-through Oxford cryostat (CF935LT) in conjunction with an Oxford Instruments ITC503 variable-temperature controller. Measurements were made at 7.5 K using a modulation frequency of 100 kHz, modulation amplitude of 0.5 mT and a microwave power of 5 mW. The magnetic ﬁeld was calibrated with a Bruker ER 036TM Teslameter.

Phillips M., Kannaian B., Yang J.N., Kather R., Yuguang M., Harmer J.R, & Pervushin K. (2020). Amyloid β chaperone — lipocalin-type prostaglandin D synthase acts as a peroxidase in the presence of heme. Biochemical Journal, 477(7), 1227-1240.

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EPR Analysis of Powdery Samples

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All EPR data was processed by continuous-wave (X-band EPR measurements on powdery samples (50 mg) which were recorded with a Bruker E500 spectrometer using a Bruker super-high Q cavity. The measurements were carried out at room temperature with a modulation frequency of 100 kHz, modulation amplitude of 0.01 mT, and a microwave power of 0.2 mW (30 dB) under non-saturating conditions.

Chen H., Wei M., He Y., Abed J., Teale S., Sargent E.H, & Yang Z. (2022). Germanium silicon oxide achieves multi-coloured ultra-long phosphorescence and delayed fluorescence at high temperature. Nature Communications, 13, 4438.

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CW-EPR Spectroscopy of Paramagnetic Samples

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CW-EPR spectra were
recorded on a Varian spectrometer with a Bruker super-High Q cavity
(ER 4122SHQE) coupled to a He-flow ESR900 cryostat. The measurements
were taken with the following experimental parameters. Microwave frequency:
9.4 GHz, microwave power: 2 mW, magnetic field modulation amplitude:
0.2 mT, magnetic field modulation frequency: 100 kHz, time constant:
300 ms, magnetic field step: 0.005 mT, and temperature T = 15 and 298 K.

Zhu D., Zaffalon M.L., Pinchetti V., Brescia R., Moro F., Fasoli M., Fanciulli M., Tang A., Infante I., De Trizio L., Brovelli S, & Manna L. (2020). Bright Blue Emitting Cu-Doped Cs2ZnCl4 Colloidal Nanocrystals. Chemistry of Materials, 32(13), 5897-5903.

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ESR Measurements Across Spectrometer Models

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ESR measurements were performed at room temperature and humidity with different models of Bruker spectrometers operating in the X band: Elexsys with a Bruker Super High Q cavity (one laboratory), E-Scan Food Analyzer (three laboratories) and EMX with a Bruker Very High Quality cavity (one laboratory). Parameters were set as indicated in the EN 1787 standard. Frequency: 9.78-9.93 GHz, depending on the equipment; center field: about 350 mT; sweep width: about 20 mT; microwave power: 0.4-0.8 mW; modulation amplitude: 0.4-0.9 mT; sweep speed: 5 mT/min-10 mT/min; number of scans: 3-64, depending on the equipment. The samples were inserted in Suprasil tubes with a diameter of 4-5 mm.

Bortolin E., Cardamone C., Chiaravalle A.E., Carratù B., Deiana G., Noto A.M.D., Schiavi M.D., D’Oca M.C., Gargiulo R., Mangiacotti M., Marchesani G., Quattrini M.C., Tomaiuolo M., & Boniglia C. (2020). An inter-laboratory comparison to evaluate the suitability of EN 1787 standard to detect irradiation in plant-origin foods with health benefits. Food Control, 117, 107326-107326.

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