The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2014
Filed:
May. 08, 2012
Sami Jannin, Lausanne, CH;
Aurélien Bornet, Lausanne, CH;
Geoffrey Bodenhausen, Paris, FR;
Bruker BioSpin AG, Faellanden, CH;
Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH;
Abstract
A method for nuclear magnetic resonance (NMR) spectroscopy of a sample involves excitation of long lived coherences (LLC) between the singlet state Sand the central triplet state Tof nuclei of the sample by initiating irradiation of the sample with an rf-field with carrier frequency ω; sustaining of the LLC by maintaining the rf-irradiation during an interval τ; converting the LLC temporarily into observable magnetization by interrupting the rf-irradiation during an observation interval τ; detecting NMR-signals during the observation interval τand reconversion of the observable magnetization back into LLC after the observation interval τ. These steps are repeated n times, wherein n is a positive integer. The method allows ultra high-resolution spectra of long-lived coherences to be obtained.