New Insight into Single-Crystal Silver Dendrite Formation and Growth Mechanisms

2020 ◽  
Vol 20 (11) ◽  
pp. 7291-7299
Author(s):  
Shahab Ranjbar Bahadori ◽  
Linyu Mei ◽  
Aseem Athavale ◽  
Yu-jen Chiu ◽  
Christopher S. Pickering ◽  
...  
Keyword(s):  
Single Crystal ◽  
Growth Mechanisms ◽  
Dendrite Formation ◽  
Insight Into

Mocvd of Polycrystalline and Epitaxial Complex Oxides by Liquid Delivery

1997 ◽  
Vol 474 ◽  
Author(s):  
J. F. Roeder ◽  
S. M. Bilodeau ◽  
R. J. Carl ◽  
T. H. Baum ◽  
P. C. Van Buskirk ◽  
...  
Keyword(s):  
Single Crystal ◽  
Current Density ◽  
Complex Oxides ◽  
The Other ◽  
Charge Storage ◽  
Growth Mechanisms ◽  
X Ray ◽  
Unique Approach ◽  
Bst Films ◽  
Liquid Delivery

ABSTRACTA unique approach to MOCVD of complex oxides enables deposition of a number of materials of technological importance through the use of liquid delivery of metalorganic precursors. Methodologies for control of composition and exploration of. process space are compared for two film systems, one in a relatively mature state of development ((Ba,Sr)Ti03), the other in an early state of development (Ni-ferrite). In both cases, composition was controlled by mixing metalorganic precursors dissolved in solvents using a liquid delivery system. Films with excellent crystalline quality were deposited in both cases. Polycrystalline BST films displayed properties suitable for DRAM applications: charge storage densities > 80 fF/μm2 and leakage current density < 10−8 A/cm2 for films as thin as 15 nm. Growth mechanisms and rates were determined for the single component oxides of the ferrite films. Epitaxial NiFe204 films were deposited on MgO single crystal substrates at 650°C; x-ray rocking curves yielded FWHM values of 0.046°, commensurate with the substrate.

scholarly journals Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia)

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Maria Lacalamita
Keyword(s):  
Single Crystal ◽  
Complex Structure ◽  
Structural Complexity ◽  
Adsorbed Water ◽  
Bending Vibration ◽  
Structural Water ◽  
Stretching Vibration ◽  
Vibrational Features ◽  
Polytype Structure ◽  
Insight Into

Combined micro-Fourier transform infrared (micro-FTIR) and electron probe microanalyses (EPMA) were performed on a single crystal of charoite from Murun Massif (Russia) in order to get a deeper insight into the vibrational features of crystals with complex structure and chemistry. The micro-FTIR study of a single crystal of charoite was collected in the 6000–400 cm−1 at room temperature and after heating at 100°C. The structural complexity of this mineral is reflected by its infrared spectrum. The analysis revealed a prominent absorption in the OH stretching region as a consequence of band overlapping due to a combination of H2O and OH stretching vibrations. Several overtones of the O-H and Si-O stretching vibration bands were observed at about 4440 and 4080 cm−1 such as absorption possibly due to the organic matter at about 3000–2800 cm−1. No significant change due to the loss of adsorbed water was observed in the spectrum obtained after heating. The occurrence of well-resolved water bending vibration bands at about 1595 and 1667 cm−1 accounts for more than one structural water molecule as expected by charoite-90 polytype structure model from literature. The chemical composition of the studied crystal is close to the literature one.

scholarly journals Insight into Flufenamic Acid Cocrystal Dissolution in the Presence of a Polymer in Solution: from Single Crystal to Powder Dissolution

2017 ◽  
Vol 14 (12) ◽  
pp. 4583-4596 ◽  
Author(s):  
Minshan Guo ◽  
Ke Wang ◽  
Ning Qiao ◽  
László Fábián ◽  
Ghazala Sadiq ◽  
...  
Keyword(s):  
Single Crystal ◽  
Flufenamic Acid ◽  
Insight Into

scholarly journals Mg3(VO4)2: Insight Into Catalytic Behavior Through Single Crystal Studies

2006 ◽  
Vol 12 (S02) ◽  
pp. 802-803
Author(s):  
C Lanier ◽  
N Erdman ◽  
LD Marks ◽  
KR Poeppelmeier
Keyword(s):  
Single Crystal ◽  
Catalytic Behavior ◽  
Insight Into

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2006

scholarly journals Study on the Reactivity of Amino Acid Chemosensor, NPFNP, with Ethanol: Structural Elucidation through Single Crystal XRD and DFT Calculations

2017 ◽  
Vol 22 (1) ◽  
pp. 16 ◽  
Author(s):  
Beena Varghese ◽  
Saleh N. Al-Busafi ◽  
Fakhr Eldin O. Suliman ◽  
Salma Al-Kindy
Keyword(s):  
Amino Acid ◽  
Dft Calculations ◽  
Single Crystal ◽  
Crystal Packing ◽  
Structural Parameters ◽  
Dft Method ◽  
Biologically Active ◽  
Central Ring ◽  
Geometrical Dimensions ◽  
Insight Into

A novel ethoxy derivative of an amino acid chemosensor, 3-naphthyl-1-phenyl-5-(2ʹ-fluoro-5ʹ-nitrophenyl)-2-pyrazoline (NPFNP), has been synthesized and characterized by different spectroscopic methods.  A single crystal of the ethoxy derivative, 3-naphthyl-1-phenyl-5-(2ʹ-ethoxy-5ʹ-nitrophenyl)-2-pyrazoline NPENP, has been obtained and characterized.  The structure holds interest as it carries biologically active pyrazoline as a central ring attaching to electron donating and withdrawing substituents. The major motivation for this work was to gain detailed insight into the structural parameters of this compound for investigating the influence of crystal packing and geometrical dimensions on optical properties. Time-dependent DFT calculations have been employed for comparing the XRD data with theoretical parameters. The results show that the DFT method at B3LYP/6-31G level can well reproduce the structure of the title compound.  

Graphitic Disks or Polygons? Faceting of Graphite Disks

1998 ◽  
Vol 4 (S2) ◽  
pp. 708-709
Author(s):  
A. Krishnan ◽  
E. Dujardin ◽  
T.W. Ebbesen ◽  
M.M.J. Treacy
Keyword(s):  
Amorphous Carbon ◽  
Carbon Layer ◽  
Nucleation And Growth ◽  
Growth Mechanisms ◽  
Additional Insight ◽  
Structural Peculiarities ◽  
Carbon Soot ◽  
20 Nm ◽  
Insight Into ◽  
Amorphous Carbon Layer

The recent discovery of graphite cones [1,2] has raised some interesting questions about the nucleation and growth of curved graphitic structures. Here we report the structural peculiarities of one member of the ensemble, i.e. the flat graphite disks. Unlike graphite flakes seen in carbon soot which are irregularly shaped, the disks in this sample often show regular faceting which might give us additional insight into the growth mechanisms.The samples were examined in a Hitachi H9000 NAR TEM. Samples were sonicated in high purity methanol and dispersed on a 300 mesh Cu grid coated with a 20 nm thick amorphous carbon layer. Typical disk diameters range from 0.5 to 3.0 μm, with thickness ranging from 10 nm to 50 nm.A close examination reveals that the edges of the disks are faceted and typically have 12 sides. In most cases, the edges show a long facet alternating with a shorter facet.

Insight into amoxicillin sodium heterosolvates and non-solvated form: crystal structures, phase transformation behaviors, and desolvation mechanism

CrystEngComm ◽  
2021 ◽  
Author(s):  
Pingping Cui ◽  
Qiuxiang Yin ◽  
Shihao Zhang ◽  
Wenchao Yang ◽  
Li Hong Jia ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Ethyl Acetate ◽  
Single Crystal ◽  
Crystal Structures ◽  
Methyl Acetate ◽  
First Time ◽  
Desolvation Mechanism ◽  
Amoxicillin Sodium ◽  
Insight Into

Amoxicillin sodium heterosolvates, including SM-M (methanol–methyl acetate solvate), SE-M (ethanol–methyl acetate solvate), and SM-E (methanol–ethyl acetate solvate), were obtained for the first time in this work. The single crystal of...

scholarly journals New insight into the pectolite – serandite series: a single crystal diffraction study of Na(Ca1.73Mn0.27)[HSi3O9] at 293 and 100 K

2007 ◽  
Vol 222 (12/2007) ◽  
Author(s):  
Alla Arakcheeva ◽  
Philip Pattison ◽  
Nicolas Meisser ◽  
Gervais Chapuis ◽  
Igor V. Pekov ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Single Crystal ◽  
Diffraction Study ◽  
Structural Characterization ◽  
Single Crystal Diffraction ◽  
Insight Into

Using synchrotron radiation, a single crystal investigation has been performed at 293 and 100 K for the structural characterization of the manganoan pectolite, Na(Ca

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