@article {3169, title = {Two-electron-spin ratchets as a platform for microwave-free dynamic nuclear polarization of arbitrary material targets}, journal = {Nano Letters}, year = {In Press}, author = {P.R. Zangara and J. Henshaw and D. Pagliero and A. Ajoy and J. Reimer and A. Pines and C. Meriles} } @article {3230, title = {Two-Electron-Spin Ratchets as a Platform for Microwave-Free Dynamic Nuclear Polarization of Arbitrary Material Targets}, journal = {Nano Letters}, year = {2019}, month = {03/2019}, abstract = {

Optically pumped color centers in semiconductor powders can potentially induce high levels of nuclear spin polarization in surrounding solids or fluids at or near ambient conditions, but complications stemming from the random orientation of the particles and the presence of unpolarized paramagnetic defects hinder the flow of polarization beyond the defect\’s host material. Here, we theoretically study the spin dynamics of interacting nitrogen-vacancy (NV) and substitutional nitrogen (P1) centers in diamond to show that outside protons spin-polarize efficiently upon a magnetic field sweep across the NV\–P1 level anticrossing. The process can be interpreted in terms of an NV\–P1 spin ratchet, whose handedness, and hence the sign of the resulting nuclear polarization, depends on the relative timing of the optical excitation pulse. Further, we find that the polarization transfer mechanism is robust to NV misalignment relative to the external magnetic field, and efficient over a broad range of electron\–electron and electron\–nuclear spin couplings, even if proxy spins feature short coherence or spin\–lattice relaxation times. Therefore, these results pave the route toward the dynamic nuclear polarization of arbitrary spin targets brought in proximity with a diamond powder under ambient conditions.

}, doi = {10.1021/acs.nanolett.8b05114}, url = {https://pubs.acs.org/doi/full/10.1021/acs.nanolett.8b05114}, author = {Pablo R. Zangara and J. Henshaw and Daniela Pagliero and Ashok Ajoy and Jeffrey A. Reimer and Alexander Pines and Carlos A. Meriles} } @article {2074, title = {Targeted Molecular Imaging of Cancer Cells using MS2-Based 129Xe NMR}, journal = {Bioconjugate Chemistry}, volume = {27}, year = {2016}, month = {07/2016}, chapter = {1796}, doi = {10.1021/acs.bioconjchem.6b00275}, url = {http://pubs.acs.org/doi/abs/10.1021/acs.bioconjchem.6b00275}, author = {Keunhong Jeong and Chawita Netirojjanakul and Henrik K Munch and Jinny Sun and Joel A Finbloom and David E Wemmer and Alexander Pines and Matthew B Francis} } @article {2070, title = {Transition-Selective Pulses in Zero-Field Nuclear Magnetic Resonance}, journal = {The Journal of Physical Chemistry}, volume = {120}, year = {2016}, month = {05/2016}, chapter = {4343}, doi = {10.1021/acs.jpca.6b04017}, url = {http://pubs.acs.org/doi/abs/10.1021/acs.jpca.6b04017}, author = {Sjolander, TF and Tayler, M and King, JP and Budker, D and Pines, A} } @article {276, title = {Temperature response of (129)Xe depolarization transfer and its application for ultrasensitive NMR detection}, journal = {Physical Review Letters}, volume = {100}, year = {2008}, note = {Phys Rev Lett320JWTimes Cited:12Cited References Count:8}, month = {Jun 27}, abstract = {

Trapping xenon in functionalized cryptophane cages makes the sensitivity of hyperpolarized (HP) (129)Xe available for specific NMR detection of biomolecules. Here, we study the signal transfer onto a reservoir of unbound HP xenon by gating the residence time of the nuclei in the cage through the temperature-dependant exchange rate. Temperature changes larger than similar to 0.6 K are detectable as an altered reservoir signal. The temperature response is adjustable with lower concentrations of caged xenon providing more sensitivity at higher temperatures. Ultrasensitive detection of functionalized cryptophane at 310 K is demonstrated with a concentration of 10 nM, corresponding to a similar to 4000-fold sensitivity enhancement compared to conventional detection. This makes HPNMR capable of detecting such constructs in concentrations far below the detection limit of benchtop uv-visible light absorbance.

}, keywords = {biosensors}, isbn = {0031-9007}, doi = {Doi 10.1103/Physrevlett.100.257603}, url = {://WOS:000257230500066}, author = {Schroeder, L. and Meldrum, T. and Smith, M. and Lowery, T. J. and Wemmer, D. E. and Pines, A.} } @article {277, title = {Temperature-controlled molecular depolarization gates in nuclear magnetic resonance}, journal = {Angewandte Chemie-International Edition}, volume = {47}, year = {2008}, note = {Angew Chem Int Edit308BXTimes Cited:13Cited References Count:19}, pages = {4316-4320}, keywords = {mri}, isbn = {1433-7851}, doi = {Doi 10.1002/Anie.200800382}, url = {://WOS:000256364400007}, author = {Schroder, L. and Chavez, L. and Meldrum, T. and Smith, M. and Lowery, T. J. and Wemmer, D. E. and Pines, A.} } @article {287, title = {Time-of-flight flow imaging of two-component flow inside a microfluidic chip}, journal = {Physical Review Letters}, volume = {98}, year = {2007}, note = {Phys Rev Lett124OYTimes Cited:21Cited References Count:16}, month = {Jan 5}, abstract = {

Here we report on using NMR imaging and spectroscopy in conjunction with time-of-flight tracking to noninvasively tag and monitor nuclear spins as they flow through the channels of a microfluidic chip. Any species with resolvable chemical-shift signatures can be separately monitored in a single experiment, irrespective of the optical properties of the fluids, thereby eliminating the need for foreign tracers. This is demonstrated on a chip with a mixing geometry in which two fluids converge from separate channels, and is generally applicable to any microfluidic device through which fluid flows within the nuclear spin-lattice relaxation time.

}, keywords = {microchannels}, isbn = {0031-9007}, doi = {Doi 10.1103/Physrevlett.98.017601}, url = {://WOS:000243379700050}, author = {Harel, E. and Hilty, C. and Koen, K. and McDonnell, E. E. and Pines, A.} } @article {305, title = {Toward ex situ phase-encoded spectroscopic imaging}, journal = {Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering}, volume = {29B}, year = {2006}, note = {Concept Magn Reson B067JNTimes Cited:7Cited References Count:20}, month = {Aug}, pages = {137-144}, abstract = {

Spectroscopic imaging of a sample placed outside of both the radio frequency and the imaging gradient coils is presented. The sample is placed in a field with a permanent one-dimensional inhomogeneity. The imaging gradients used for phase encoding are designed to produce a static field that depends only on the transverse direction, uncoupling the effects associated with the single-sided nature of these coils. Two-dimensional imaging coupled with chemical shift information is obtained via the ex situ matching technique. Open-saddle geometry is used to match the static field profile for chemical shift information recovery. (C) 2006 Wiley Periodicals, Inc.

}, keywords = {probe}, isbn = {1552-5031}, doi = {Doi 10.1002/Cmr.B.20069}, url = {://WOS:000239298100004}, author = {Demas, V. and Meriles, C. and Sakellariou, D. and Han, S. I. and Reimer, J. and Pines, A.} } @article {319, title = {Time-of-flight flow imaging using NMR remote detection}, journal = {Physical Review Letters}, volume = {95}, year = {2005}, note = {Phys Rev Lett955SGTimes Cited:35Cited References Count:29}, month = {Aug 12}, abstract = {

A time-of-flight imaging technique is introduced to visualize fluid flow and dispersion through porous media using NMR. As the fluid flows through a sample, the nuclear spin magnetization is modulated by rf pulses and magnetic field gradients to encode the spatial coordinates of the fluid. When the fluid leaves the sample, its magnetization is recorded by a second rf coil. This scheme not only facilitates a time-dependent imaging of fluid flow, it also allows a separate optimization of encoding and detection subsystems to enhance overall sensitivity. The technique is demonstrated by imaging gas flow through a porous rock.

}, keywords = {mri}, isbn = {0031-9007}, doi = {Doi 10.1103/Physrevlett.95.075503}, url = {://WOS:000231247300028}, author = {Granwehr, J. and Harel, E. and Han, S. and Garcia, S. and Pines, A. and Sen, P. N. and Song, Y. Q.} } @article {336, title = {Three-dimensional phase-encoded chemical shift MRI in the presence of inhomogeneous fields}, journal = {Proceedings of the National Academy of Sciences of the United States of America}, volume = {101}, year = {2004}, note = {P Natl Acad Sci USA830EQTimes Cited:18Cited References Count:12}, month = {Jun 15}, pages = {8845-8847}, abstract = {

A pulse sequence consisting of an excitation pulse and two adiabatic full-passage pulses with scaled relative peak amplitudes is combined with phase encoding to recover chemical shift information within 3D images in a 1D inhomogeneous static magnetic field with a matched rf field gradient. The results are discussed in the context of ex situ magnetic resonance and imaging. The future directions of our research in implementing the ex situ technique in a real one-sided system are also discussed.

}, keywords = {pulses}, isbn = {0027-8424}, doi = {Doi 10.1073/Pnas.0403016101}, url = {://WOS:000222104900004}, author = {Demas, V. and Sakellariou, D. and Meriles, C. A. and Han, S. and Reimer, J. and Pines, A.} } @article {351, title = {Theoretical investigations of I=5/2 quadrupolar spin dynamics in the sudden-passage regime}, journal = {Journal of Chemical Physics}, volume = {117}, year = {2002}, note = {J Chem Phys566JRTimes Cited:3Cited References Count:44}, month = {Jul 8}, pages = {518-532}, abstract = {

The theoretical approach utilizing bimodal Floquet theory in the quadrupolar/central-transition interaction frame, presented in an earlier article [J. D. Walls, K. H. Lim, and A. Pines, J. Chem. Phys. 116, 79 (2002)], is extended to describe the more complicated spin dynamics of I=5/2 spin systems. Rotary resonance effects occur when the strength of the radio-frequency irradiation, omega(1), matches the sample spinning speed, omega(r), at the conditions omega(1) = 2/3nomega(r) (n integral). At these conditions, conversions of both triple-quantum and five-quantum coherences to central-quantum coherence are observed. Between rotary resonance conditions [ 2n/3omega(r)\<ω(1)\<[2(n+1)]/3ω(r)], five-quantum as well as triple-quantum coherences can be created from equilibrium z-magnetization via a nutation mechanism. In addition, effective transfer between five-quantum and triple-quantum coherences also is observed in between rotary resonance conditions. These effects have been investigated theoretically and verified by both numerical calculations and experimental results. (C) 2002 American Institute of Physics.

}, keywords = {SPECTROSCOPY}, isbn = {0021-9606}, doi = {Doi 10.1063/1.1483256}, url = {://WOS:000176424800003}, author = {Walls, J. D. and Lim, K. H. and Logan, J. W. and Urban, J. T. and Jerschow, A. and Pines, A.} } @article {350, title = {Theoretical studies of the spin dynamics of quadrupolar nuclei at rotational resonance conditions}, journal = {Journal of Chemical Physics}, volume = {116}, year = {2002}, note = {J Chem Phys503ECTimes Cited:12Cited References Count:20}, month = {Jan 1}, pages = {79-90}, abstract = {

A theory of the spin dynamics of I=3/2 quadrupolar nuclei in the sudden-passage limit is discussed in relation to the recently observed rotational resonance (RR) effects on the excitation and conversion of triple-quantum coherence in the FASTER multiple-quantum magic-angle spinning (MQMAS) experiments [T. Vosegaard, P. Florian, D. Massiot, and P. J. Grandinetti, J. Chem. Phys. 114, 4618 (2001)]. A novel interaction frame, which combines the quadrupolar interaction with the central transition radio frequency irradiation, is shown to be useful in understanding the complex spin dynamics at and away from RR conditions. Analytical expressions for the Hamiltonian obtained from bimodal Floquet theory are included in order to provide insight into the spin dynamics observed in the FASTER MQMAS experiments. Numerical simulations have been performed and were found to support the theoretical formalism. (C) 2002 American Institute of Physics.

}, keywords = {solids}, isbn = {0021-9606}, doi = {Doi 10.1063/1.1421613}, url = {://WOS:000172784700010}, author = {Walls, J. D. and Lim, K. H. and Pines, A.} } @article {362, title = {Two-dimensional high-resolution NMR spectra in matched B-0 and B-1 field gradients}, journal = {Journal of Magnetic Resonance}, volume = {156}, year = {2002}, note = {J Magn Reson568UETimes Cited:15Cited References Count:26}, month = {May}, pages = {146-151}, abstract = {

In a recent publication we presented a method to obtain highly resolved NMR spectra in the presence of an inhomogeneous B-0 field with the help of a matched RF gradient. If RF gradient pulses are combined with \"ideal\" 90degrees pulses to form inhomogeneous z rotation pulses, the line broadening caused by the B-0 gradient can be refocused, while the full chemical shift information is maintained. This approach is of potential use for NMR spectroscopy in an inhomogeneous magnetic field produced by an \"ex-situ\" surface spectrometer. In this contribution, we extend this method toward two-dimensional spectroscopy with high resolution in one or both dimensions. Line narrowing in the indirect dimension can be achieved by two types of nutation echoes, thus leading to depth-sensitive NMR spectra with full chemical shift information. If the nutation echo in the indirect dimension is combined with a stroboscopic acquisition using inhomogeneous z-rotation pulses, highly resolved two-dimensional correlation spectra can be obtained in matched field gradients. Finally, we demonstrate that an INEPT coherence transfer from proton to carbon spins is possible in inhomogeneous B-0 fields. Thus, it is possible to obtain one-dimensional C-13 NMR spectra with increased sensitivity and two-dimensional HETCOR spectra in the presence of B-0 gradients of 0.4 mT/cm. These schemes may be of some value for ex-situ NMR analysis of materials and biological systems. (C) 2002 Elsevier Science (USA).

}, keywords = {echoes}, isbn = {1090-7807}, doi = {Doi 10.1006/Jmre.2002.2545}, url = {://WOS:000176562100016}, author = {Heise, H. and Sakellariou, D. and Meriles, C. A. and Moule, A. and Pines, A.} } @article {363, title = {Two-dimensional NMR correlations of liquid crystals using switched angle spinning}, journal = {Journal of Magnetic Resonance}, volume = {157}, year = {2002}, note = {J Magn Reson589DHTimes Cited:10Cited References Count:28}, month = {Jul}, pages = {163-169}, abstract = {

We present the first application of switched angle spinning (SAS) to correlate the first-order dipolar spectrum of a liquid crystalline sample with the isotropic magic angle spinning (MAS) spectrum in a two-dimensional experiment. In this experiment we are able to select the degree of dipolar couplings introduced via mechanical manipulations of the liquid crystal director in a single oriented sample. The F-19 SAS-COSY correlation of iodotrifluoroethylene, an AMX spin system, dissolved in the nematic liquid crystal 4-octylphenyl-2-chloro-4-(4-heptylbenzoyloxy)-benzoate provides assignment of both the J and dipolar couplings in a single experiment. This work demonstrates the use of oriented samples and sample spinning to resolve hornonuclear dipolar couplings using isotropic chemical shifts. (C) 2002 Elsevier Science (USA).

}, keywords = {dynamics}, isbn = {1090-7807}, doi = {Doi 10.1006/Jmre.2002.2571}, url = {://WOS:000177742400020}, author = {Havlin, R. H. and Park, G. H. J. and Pines, A.} } @article {398, title = {Time reversal of cross-polarization in solid-state NMR}, journal = {Molecular Physics}, volume = {95}, year = {1998}, note = {Mol Phys146XYTimes Cited:4Cited References Count:21}, month = {Dec 10}, pages = {849-858}, abstract = {

Cross-polarization at the Hartmann-Hahn condition in solid-state NMR frequently is described in terms of thermodynamics. Spin temperatures characterizing the canonical density operator are assigned to the Zeeman reservoirs of the two spins and the cross-polarization process brings about a state of equilibrium of the two reservoirs with a common temperature. In such a model, cross-polarization from an initially polarized spin species (I spins) to another spin species (S spins) is inherently an irreversible process accompanied by an increase in the entropy of the system. However, a cross-polarization echo can be generated whereby the polarization transferred to the S spins returns to the I spins, restoring the initial density operator. Therefore a thermodynamic description should be applied with care even in samples where the build-up and the decay of the magnetization can be approximated well by multiexponential processes. Such cross-polarization echoes are formed by the consecutive application of two pulse trains that produce effective Hamiltonians differing in sign. The \&$\#$39;time reversal\&$\#$39; of cross-polarization is consistent with both the increase in Zeeman entropy during the approach to equilibrium and with the constraint of unitary quantum evolution.

}, keywords = {echoes}, isbn = {0026-8976}, doi = {Doi 10.1080/002689798166477}, url = {://WOS:000077460200014}, author = {Ernst, M. and Meier, B. H. and Tomaselli, M. and Pines, A.} } @article {397, title = {Time-reversal of cross-polarization in nuclear magnetic resonance}, journal = {Journal of Chemical Physics}, volume = {108}, year = {1998}, note = {J Chem Phys108FUTimes Cited:11Cited References Count:17}, month = {Jun 15}, pages = {9611-9613}, abstract = {

It is demonstrated that the time evolution of the heteronuclear polarization-transfer process in a dipolar-coupled nuclear spin system can be reversed, leading to the observation of cross polarization echoes. The cross-polarization echoes are induced by consecutive application of two pulse trains that produce effective Hamiltonians that differ only in sign, Cross-polarization echoes have been recorded for a powder sample of alanine. The time evolution of the spin;system is consistent with both unitary quantum dynamics and with spin thermodynamics of two systems approaching a common spin temperature. (C) 1998 American Institute of Physics.

}, keywords = {echoes}, isbn = {0021-9606}, doi = {Doi 10.1063/1.476435}, url = {://WOS:000075256100001}, author = {Ernst, M. and Meier, B. H. and Tomaselli, M. and Pines, A.} } @article {435, title = {Triple-quantum two-dimensional Al-27 magic-angle spinning nuclear magnetic resonance spectroscopic study of aluminosilicate and aluminate crystals and glasses}, journal = {Journal of the American Chemical Society}, volume = {118}, year = {1996}, note = {J Am Chem SocVa026Times Cited:139Cited References Count:31}, month = {Jul 31}, pages = {7209-7214}, abstract = {

A new two-dimensional magic-angle spinning NMR experiment(1,2) using multiple-quantum coherences of half-integer quadrupolar nuclei was used to study Al-27 sites in crystalline samples of leucite (KAlSi2O6), anorthite (CaAl2Si2O8), and kyanite (Al2SiO5), as well as CaAl2Si2O8 glass and a magnesium aluminoborate glass. In the crystals, multiple sites are partially resolved and new results for isotropic chemical shifts and quadrupolar parameters are derived, using data collected at a single magnetic field. Data for both leucite and anorthite are consistent with previous results that correlate chemical shifts with mean intertetrahedral bond angle. Signal can be obtained from sites with quadrupolar coupling constants as large as 9 MHz, but intensities are reduced. In the aluminoborate glass, peaks for sites with different Al coordination numbers are well separated. The lack of such features in CaAl2Si2O8 glass rules out the presence of significant quantities of AlO5 and AlO6 groups.

}, keywords = {anorthite}, isbn = {0002-7863}, doi = {Doi 10.1021/Ja9606586}, url = {://WOS:A1996VA02600027}, author = {Baltisberger, J. H. and Xu, Z. and Stebbins, J. F. and Wang, S. H. and Pines, A.} } @article {457, title = {Theory and Exact-Solutions for Tyckos Zero-Field Nmr in High-Field}, journal = {Journal of Magnetic Resonance Series A}, volume = {109}, year = {1994}, note = {J Magn Reson Ser APb546Times Cited:5Cited References Count:27}, month = {Aug}, pages = {157-165}, abstract = {

A theory of zero-field NMR in high field (ZFHF-NMR) is described in terms of coherent averaging and irreducible tensors. The theory is used to determine analytical solutions for the parameters of the trajectory proposed and used by Tycko. A new pulse sequence is presented, and optimized solutions for dynamic-angle spinning, dynamic-angle hopping, and double-rotation versions of ZFHF-NMR are discussed. (C) 1994 Academic Press, Inc.

}, keywords = {solid-state nmr}, isbn = {1064-1858}, doi = {Doi 10.1006/Jmra.1994.1149}, url = {://WOS:A1994PB54600003}, author = {Sun, B. Q. and Pines, A.} } @article {575, title = {Theory of Broad-Band Heteronuclear Decoupling in Multispin Systems}, journal = {Journal of Magnetic Resonance}, volume = {73}, year = {1987}, note = {J Magn ResonH7285Times Cited:23Cited References Count:6}, month = {Jun 1}, pages = {90-98}, isbn = {0022-2364}, doi = {Doi 10.1016/0022-2364(87)90227-7}, url = {://WOS:A1987H728500008}, author = {Suter, D. and Schenker, K. V. and Pines, A.} } @article {586, title = {Theory of Line-Shapes for Zero-Field Nmr in the Presence of Molecular-Motion}, journal = {Journal of Chemical Physics}, volume = {87}, year = {1987}, note = {J Chem PhysL1661Times Cited:10Cited References Count:41}, month = {Dec 15}, pages = {6867-6876}, isbn = {0021-9606}, doi = {Doi 10.1063/1.453381}, url = {://WOS:A1987L166100011}, author = {Meier, P. and Kothe, G. and Jonsen, P. and Trecoske, M. and Pines, A.} } @article {590, title = {Theory of Multiple-Pulse Nmr at Low and Zero Fields}, journal = {Journal of Magnetic Resonance}, volume = {75}, year = {1987}, note = {J Magn ResonK7509Times Cited:14Cited References Count:18}, month = {Oct 15}, pages = {110-124}, isbn = {0022-2364}, doi = {Doi 10.1016/0022-2364(87)90318-0}, url = {://WOS:A1987K750900010}, author = {Lee, C. J. and Suter, D. and Pines, A.} } @article {593, title = {Two-Dimensional Multiple Quantum Nmr of Isotopic Mixtures in Liquid-Crystals}, journal = {Molecular Physics}, volume = {60}, year = {1987}, note = {Mol PhysF9930Times Cited:12Cited References Count:18}, month = {Jan}, pages = {205-212}, isbn = {0026-8976}, doi = {Doi 10.1080/00268978700100151}, url = {://WOS:A1987F993000015}, author = {Gochin, M. and Hugicleary, D. and Zimmermann, H. and Pines, A.} } @article {608, title = {Theory of Chemical-Exchange in Zero-Field Nmr - 2-Site Flips}, journal = {Journal of Chemical Physics}, volume = {85}, year = {1986}, note = {J Chem PhysE5176Times Cited:9Cited References Count:13}, month = {Nov 1}, pages = {4873-4880}, isbn = {0021-9606}, doi = {Doi 10.1063/1.451722}, url = {://WOS:A1986E517600014}, author = {Jonsen, P. and Luzar, M. and Pines, A. and Mehring, M.} } @article {613, title = {Time Domain Zero-Field Nmr and Nqr}, journal = {Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences}, volume = {41}, year = {1986}, note = {Z Naturforsch AA6350Times Cited:2Cited References Count:22}, month = {Jan-Feb}, pages = {440-444}, isbn = {0932-0784}, url = {://WOS:A1986A635000084}, author = {Bielecki, A. and Zax, D. B. and Thayer, A. M. and Millar, J. M. and Pines, A.} } @article {599, title = {Two-Dimensional Zero-Field Nmr and Nqr}, journal = {Chemical Physics Letters}, volume = {129}, year = {1986}, note = {Chem Phys LettD7200Times Cited:16Cited References Count:24}, month = {Aug 15}, pages = {55-58}, isbn = {0009-2614}, doi = {Doi 10.1016/0009-2614(86)80167-1}, url = {://WOS:A1986D720000011}, author = {Thayer, A. M. and Millar, J. M. and Pines, A.} } @article {641, title = {Total Spin Coherence Transfer Echo Spectroscopy}, journal = {Journal of Chemical Physics}, volume = {79}, year = {1983}, note = {J Chem PhysRr565Times Cited:25Cited References Count:43}, pages = {5301-5310}, isbn = {0021-9606}, doi = {Doi 10.1063/1.445692}, url = {://WOS:A1983RR56500011}, author = {Garbow, J. R. and Weitekamp, D. P. and Pines, A.} } @article {647, title = {Time-Resolved Optical Nuclear-Polarization by Rapid Field Switching}, journal = {Chemical Physics Letters}, volume = {93}, year = {1982}, note = {Chem Phys LettPv837Times Cited:4Cited References Count:15}, pages = {392-395}, isbn = {0009-2614}, doi = {Doi 10.1016/0009-2614(82)83716-0}, url = {://WOS:A1982PV83700018}, author = {Tycko, R. and Pines, A. and Stehlik, D.} } @article {657, title = {Theory of Selective Excitation of Multiple-Quantum Transitions}, journal = {Journal of Chemical Physics}, volume = {73}, year = {1980}, note = {J Chem PhysKh292Times Cited:159Cited References Count:26}, pages = {2084-2099}, isbn = {0021-9606}, doi = {Doi 10.1063/1.440403}, url = {://WOS:A1980KH29200011}, author = {Warren, W. S. and Weitekamp, D. P. and Pines, A.} } @inbook {680, title = {Theory of double-quantum coherence and high resolution deuterium NMR in solids}, booktitle = {Magnetic resonance and related phenomena}, year = {1977}, pages = {395-400}, publisher = {Beltz-Offsetdruck}, organization = {Beltz-Offsetdruck}, address = {Heidelburg}, author = {Vega, S. and Pines, A.}, editor = {Hausser, K.} } @article {723, title = {Time-Reversal Experiments in Dipolar-Coupled Spin Systems}, journal = {Physical Review B}, volume = {3}, year = {1971}, note = {Phys Rev BI5979Times Cited:281Cited References Count:36}, pages = {684-\&}, doi = {Doi 10.1103/Physrevb.3.684}, url = {://WOS:A1971I597900016}, author = {Rhim, W. K. and Pines, A. and Waugh, J. S.} }