At PhoenixNMR, we test designs thoroughly so you can focus on your science, not on your equipment.
In the first testing video, a rotor is tested to destruction. Don’t try this at home – these are trained professionals!
In the second testing video, a PMAS controller is put through its paces with a Bruker 3.2 mm probe. Notice the smooth transitions from one speed to the next and the awesome spinning stability at each speed – complete control!
Below: aliphatic region of the 2D CC spectrum of 15N, 13C labeled alpha-synuclein protein monomer seeded from a brain tissue sample (250 ms CORD mixing), acquired at 900 MHz 1H field at the National Magnetic Resonance Facility at Madison (NMRFAM, @NMRFAM) , utilizing a PhoenixNMR HFXY probe fitted with a 1.6mm module and PhoenixNMR speed controller (PMAS).
The PhoenixNMR HFXY probe was operated in double resonance mode at MASS = 20 kHz; mixing time = 250 ms; total time to acquire spectrum = 20 hrs using 4 blocks of 1024 rows each; 8 acquisitions per row; pulse delay = 1.5 s; CORDxy4 recoupling plus SPINAL decoupling.
Data courtesy Prof. Chad M. Rienstra, Dr. Marco Tonelli and Dr. Dwaipayan Mukhopadhyay. Data were acquired at the National Magnetic Resonance Facility at Madison ( NMRFAM, @NMRFAM). This 900 MHz SSNMR instrument and probe are available for use at NMRFAM by any scientist worldwide.