Effects of hydrogen bonding on the surface energy of ionic-neutral dodecyldimethylamine oxide micelles

2007 ◽  
pp. 83-85
Author(s):  
Y. Terada ◽  
T. Odagaki ◽  
H. Maeda
Keyword(s):  
Hydrogen Bonding ◽  
Surface Energy ◽  
Dodecyldimethylamine Oxide

Chemical Dynamics Study of Intrasurface Hydrogen-Bonding Effects in Gas−Surface Energy Exchange and Accommodation

2008 ◽  
Vol 112 (2) ◽  
pp. 476-490 ◽  
Author(s):  
Uroš Tasić ◽  
B. Scott Day ◽  
Tianying Yan ◽  
John R. Morris ◽  
William L. Hase
Keyword(s):  
Hydrogen Bonding ◽  
Surface Energy ◽  
Energy Exchange ◽  
Chemical Dynamics

Post-CMP Cleaners for Tungsten Advanced Nodes: 10nm and 7nm

2018 ◽  
Vol 282 ◽  
pp. 278-283
Author(s):  
Ruben R. Lieten ◽  
Daniela White ◽  
Thomas Parson ◽  
Michael White
Keyword(s):  
Contact Angle ◽  
Hydrogen Bonding ◽  
Surface Energy ◽  
Surface Characterization ◽  
Dielectric Breakdown ◽  
Chemical Mechanical Planarization ◽  
Organic Residue ◽  
Polishing Process ◽  
Chemical Corrosion ◽  
Abrasive Particles

Chemical Mechanical Planarization (CMP) is a key process for IC manufacturers. Tungsten (W) is an important material for connecting logic elements and for connecting memory elements, thanks to its excellent planarization, filling, mechanical and electromigration properties. W slurries are developed to remove high amounts of W via an abrasive, in conjunction with an oxidizer. After the polishing process, the planarized surface is contaminated with abrasive particles, organic residue, pad debris and metal cations through covalent or hydrogen-bonding, electrostatic and Van der Waals attractions. Post-CMP cleaning is required to remove all these contaminants while exhibiting low galvanic and chemical corrosion. Formulated cleans are needed to meet all these requirements. The performance of formulated W/TiN post-CMP cleaners for N10 and N7 has been evaluated. The newly developed formulations show a factor 4 reduction in metal surface contamination (from ~2 x 1012atoms/cm2to ~ 5 x 1011atoms/cm2), which is important to prevent dielectric breakdown. Very low particulate and organic residue defectivity was additionally confirmed by different surface characterization techniques: XPS, FTIR, contact angle/surface energy.

scholarly journals Surface Energy Compatibilites of Cellulose and Polypropylene

1992 ◽  
Vol 266 ◽  
Author(s):  
Daniel T. Quillin ◽  
Daniel F. Caulfield ◽  
James A. Koutsky
Keyword(s):  
Hydrogen Bonding ◽  
Surface Energy ◽  
Adhesive Bonding ◽  
Alkyl Ketene Dimer ◽  
Recycled Paper ◽  
Adhesion Properties ◽  
Polypropylene Composites ◽  
Surface Energies ◽  
Lignocellulosic Fiber ◽  
Sizing Agents

AbstractIn addition to its use in recycled paper products, recovered lignocellulosic fiber can be used as a reinforcement filler in composites with polyolefins. However, problems in both processing and product performance are often caused by the incompatibilities of surface energies between hydrophilic cellulose and non-polar polyolefin. This poor match in surface polarities is detrimental to strong adhesive bonding between olefin and cellulose. This work examines the effect of surface energy on the adhesion properties of polypropylene and cellulose. In particular, three materials accepted as paper-sizing agents were used to change the cellulosic fiber's surface energy to make it more compatible withthe surface energy of polypropylene.Cellulose fibers were treated by various methods with (1) alkyl ketene dimer, (2) alkenyl succinic anhydride, and (3) stearic acid and were characterized by their surface energies as determined by single fiber wettability measurements using the Wilhelmy technique. These measurements are discussed in detail. Results from these measurments can be related to differences in adhesion between treated cellulose and polypropylene, which can be measured by internal bond tests on hot-pressed composite sheets.Results indicate that the use of sizing agents reduces the acid/base (hydrogen bonding) character of the cellulose surface. Interactions involving hydrogen bonding are important in cellulose/modified-polypropylene composites. Reduction of these interactions appears to lead to a corresponding reduction in adhesion between cellulose and polypropylene.

Surface Energy of Ionized-Neutral Dodecyldimethylamine Oxide Micelles

1997 ◽  
Vol 101 (30) ◽  
pp. 5784-5788 ◽  
Author(s):  
Yayoi Terada ◽  
Hiroshi Maeda ◽  
Takashi Odagaki
Keyword(s):  
Surface Energy ◽  
Dodecyldimethylamine Oxide

scholarly journals Effect of Intermolecular Hydrogen Bonding on Low-Surface-Energy Material of Poly(vinylphenol)

2007 ◽  
Vol 111 (13) ◽  
pp. 3404-3410 ◽  
Author(s):  
Han-Ching Lin ◽  
Chih-Feng Wang ◽  
Shiao-Wei Kuo ◽  
Pao-Hsiang Tung ◽  
Chih-Feng Huang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Surface Energy ◽  
Intermolecular Hydrogen Bonding ◽  
Low Surface Energy ◽  
Energy Material

The annealed (0001) α-alumina surface and its influence on thin-film growth

1995 ◽  
Vol 53 ◽  
pp. 336-337
Author(s):  
Michael W. Bench ◽  
Paul G. Kotula ◽  
C. Barry Carter
Keyword(s):  
Electron Microscopy ◽  
Surface Energy ◽  
Film Growth ◽  
Thin Film Growth ◽  
Energy Calculations ◽  
Transmission Electron ◽  
Reflection Electron Microscopy ◽  
Low Energy Electron ◽  
Surface Nature

The growth of semiconductors, superconductors, metals, and other insulators has been investigated using alumina substrates in a variety of orientations. The surface state of the alumina (for example surface reconstruction and step nature) can be expected to affect the growth nature and quality of the epilayers. As such, the surface nature has been studied using a number of techniques including low energy electron diffraction (LEED), reflection electron microscopy (REM), transmission electron microscopy (TEM), molecular dynamics computer simulations, and also by theoretical surface energy calculations. In the (0001) orientation, the bulk alumina lattice can be thought of as a layered structure with A1-A1-O stacking. This gives three possible terminations of the bulk alumina lattice, with theoretical surface energy calculations suggesting that termination should occur between the Al layers. Thus, the lattice often has been described as being made up of layers of (Al-O-Al) unit stacking sequences. There is a 180° rotation in the surface symmetry of successive layers and a total of six layers are required to form the alumina unit cell.

The nucleation of cavities at grain boundaries

1987 ◽  
Vol 45 ◽  
pp. 288-291
Author(s):  
P. J. Goodhew
Keyword(s):  
Surface Tension ◽  
Surface Energy ◽  
Grain Boundaries ◽  
Radiation Damage ◽  
Impurity Concentration ◽  
Driving Force ◽  
Nucleation And Growth ◽  
Phase Boundaries ◽  
Cavity Nucleation ◽  
Spherical Bubble

Cavity nucleation and growth at grain and phase boundaries is of concern because it can lead to failure during creep and can lead to embrittlement as a result of radiation damage. Two major types of cavity are usually distinguished: The term bubble is applied to a cavity which contains gas at a pressure which is at least sufficient to support the surface tension (2g/r for a spherical bubble of radius r and surface energy g). The term void is generally applied to any cavity which contains less gas than this, but is not necessarily empty of gas. A void would therefore tend to shrink in the absence of any imposed driving force for growth, whereas a bubble would be stable or would tend to grow. It is widely considered that cavity nucleation always requires the presence of one or more gas atoms. However since it is extremely difficult to prepare experimental materials with a gas impurity concentration lower than their eventual cavity concentration there is little to be gained by debating this point.

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