Split spiral broadband double channel NMR detector facilitated by LTCC technology

Area of Science:

• Nuclear Magnetic Resonance (NMR) Spectroscopy
• Microfluidics
• Materials Science

Background:

• Planar spiral detector coils are valuable in NMR for accommodating flat samples and microfluidic integration.
• Previous research has shown the potential for broadband operation in micro planar spiral coils.
• Novel detector designs are needed to expand NMR capabilities for complex systems.

Purpose of the Study:

• To introduce a novel double-channel NMR detector based on a modified planar spiral coil.
• To optimize the spiral geometry for dual-frequency band operation.
• To demonstrate the fabrication and performance of this device in a microfluidic system.

Main Methods:

• A planar spiral coil with an additional intermediary contact was designed and simulated for dual-frequency band operation.
• The microfluidic and NMR device was fabricated using low-temperature co-fired ceramic (LTCC) technology.
• Untuned broadband operation was demonstrated using 1D NMR spectra of 4 isotopes and 2D [Formula: see text] HSQC measurements.

Main Results:

• The novel double-channel NMR detector was successfully fabricated using LTCC technology.
• Broadband operation was achieved, covering a frequency range from 125 MHz to 500 MHz.
• The device demonstrated its capability for 1D NMR spectroscopy and 2D [Formula: see text] HSQC measurements.

Conclusions:

• The developed double-channel NMR detector offers a robust and user-friendly solution for multi-nuclear NMR studies.
• This technology shows significant potential for analyzing flow systems and complex samples.
• The integration of microfluidics and broadband NMR detection opens new avenues in analytical chemistry and materials science.