Very High-Field NMR
Temperature-Dependent 4‑, 5- and 6‑Fold Coordination of Aluminum in MOCVD-Grown Amorphous Alumina Films: A Very High Field 27Al-NMR study
... ■ EXPERIMENTAL SECTION Sample Preparation. Deposition experiments were performed in a custom-made, horizontal, hot-wall reactor described in a previous paper. 9 The films were grown on 100 μm thick, (100) oriented silicon ...
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Temperature-Dependent 4‑, 5- and 6‑Fold Coordination of Aluminum in MOCVD-Grown Amorphous Alumina Films: A Very High Field 27Al-NMR study
... It provides new insights into the structural variation with deposition temperature of MOCVD amorphous alumina films. The presence of as much as 40% of penta-coordinated aluminum in amorphous aluminum oxide thin films was ...
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Atomic scale structure of amorphous aluminum oxyhydroxide, oxide and oxycarbide films probed by very high field 27Al nuclear magnetic resonance
... evidence of an additional environment in films processed from DMAI (+O 2 ) by 27 Al SSNMR and first-principle NMR calculations on Al 4 C 3 and Al 4 O 4 C crystal structures supports that carbon is located in ...
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Natural abundance high field 43Ca NMR solid state NMR in cement science
... Ca NMR spectrum of 11 A˚ Tobermorite is shown in ...the NMR experiment (space group B 1 1 m, a = ...two very close spaced signals with the chemical shifts at about 23 and 25 ppm with moderate ...
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Atomic scale structure of amorphous aluminum oxyhydroxide, oxide and oxycarbide films probed by very high field 27Al nuclear magnetic resonance
... Using very high field 27 Al solid-state NMR (20 T), it is shown that all the amorphous films (21 samples) present a high degree of local disorder which always consists of 4-, 5- and ...
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High-field multinuclear solid-state nuclear magnetic resonance (NMR) and first principle calculations in MgSO4 polymorphs
... structurally very similar and consist of edge-sharing MgO 6 octahedra arranged in infinite ribbons and cross-linked by sheets of pseudo-close-packed SO 4 ...
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High Magnetic Field NMR Studies of LiVGe$_2$O$_6$, a quasi 1-D Spin $S = 1$ System
... the NMR line is very small, about 15 kHz, so that a single exponential form is ex- pected for m(t) as long as all parts of the sample have the same value of T 1 −1 ...
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Pushing the limits of sensitivity and resolution for natural abundance 43Ca NMR using ultra-high magnetic field (35.2 T)
... MAS NMR measurements at ‘‘lower’’ fields (B 0 r 20 T) using spinning speeds of B5 kHz (which is in practice the upper limit for some of the commercial large volume rotors) could actually lead to misleading ...
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High field 33S solid state NMR and first-principles calculations in potassium sulfates
... ReceiVed: August 25, 2009; ReVised Manuscript ReceiVed: October 16, 2009 A set of potassium sulfates presenting a variety of sulfur environments (K 2 SO 4 , KHSO 4 , K 2 S 2 O 7 , and K 2 S 2 O 8 ) has been studied by 33 ...
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High Field determination of superconducting fluctuations in high-Tc cuprates
... Independently of these remarks, all the recent experimental data now point to an onset temperature for superconducting fluctuations well below the pseudogap temperature. One can also observe in Fig.5 that T c 0 is only ...
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1H and 31P NMR Spectroscopy for the study of brain metabolism at Ultra High Magnetic Field from Rodents to Men
... 1 field homogeneity, B 0 mapping was also used for shimming on large volumes in the rat brain where strong B 1 inhomogeneity were ...the field map ...
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High-resolution Magic-angle Spinning (HR-MAS) NMR Spectroscopy
... When a sample is under fast spinning, the air bearing generates a frictional heat on the rotor surface. The frictional heat induces a local temperature gradient inside the rotor. If the 1 H shift of the sample is ...
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Very high modulus high-density polyethylene and high-modulus polypropylene obtained by solid-state roll drawing
... Interestingly, the increase in k 㛳 /k ⬜ as a function of did not level off, contrary to other properties such as birefringence, which showed a plateau at high ’s (generally above about 5). Different models have ...
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User Terminal Wideband Modem for Very High Throughput Satellites
... F. Demodulation and decoding The design of an LDPC decoder for the DVB-S2 and DVB-S2X standards is challenging especially in case of high throughput and very low bit error rate. This is a non-trivial task, ...
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Solar radiation pressure effects on very high-eccentric formation flying
... with high focal length. As these systems need a very high precision on control orbit and determination, Lagrange point orbits are very ...with very large semi-major axis. This kind of ...
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Very high dynamic range and high-sampling rate VME digitizing boards for physics experiments.
... Fig. 18: The shaped ATLAS LARG calibration system signal measured with the MATACQVME board. Note that the shaper inverts the calibration signal. About 300 of those calibration cards are in production. In order to ...
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Very High Brightness, High Resolution CMOS Driving Circuit for Microdisplay in Augmented Reality
... requiring high-resolution microdisplays at small ...for high brightness ...demonstrating high contrast, high brightness, high efficiency as well as good lifetime ...a high yield ...
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Classification of very high resolution SAR images of urban areas
... In this report, we have combined a SAR amplitude statistics modeling via finite mix- tures and copulas, with a hierarchical Markov random field, leading to a supervised Bayesian classification. We compared this ...
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Cellulose Structural Polymorphism in Plant Primary Cell Walls Investigated by High-Field 2D Solid-State NMR Spectroscopy and Density Functional Theory Calculations
... C NMR chemical shifts, cellulose from many sources was found to consist of two crystalline allomorphs, I α and Iβ, in varying proportions 4 ...correlation NMR experiments were carried out on highly ...
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Natural abundance ultrahigh-field 43Ca solid-state NMR in cement-based materials
... (SS) NMR has had a significant role in studies of cement-based materials and ...SS NMR studies concentrated on such nuclei as 29 Si, 27 Al, 17 O and 1 ...
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