interfacial
Interfacial Tension
This video shows how interfacial tension is measured using DROPimage Advanced Software. The drop phase is an oil. The external phase is water. The solid phase is stainless steel (needle). We show how simple it is to create an experiment which takes 10 measurements 5 times per second. This type of experiment requires a ramé-hart Model 250 or 500 Goniometer / Tensiometer.
Interfacial + Get Zach to 1K!
PSD at 150 Likes: Hey guys just a little update video to tell you whats coming soon from my channel etc. Please Get Zach To 1k Guys :D Zachs channel: youtube.com Addys channel: youtube.com Thanks guys.
Two-phase churn flow interfacial velocities
Vectors of interfacial motion in upward concurrent churn flow of air and water in a rectangular channel. The dimensions of the channel are 36 mm wide by 11.4 mm deep. The air flow was 200 slpm and the liquid flow was 0.5 lpm. Video was obtained using a Vision Research Phantom V.311 video camera at 500 fps. Vectors were generated using LaVison DaVis 7.2. Video obtained and analyzed by Samuel Vanden Hogen at the University of Wisconsin-Madison Multiphase Flow Visualization and Analysis Laboratory (MFVAL), Prof. Timothy Shedd, director.
Calibrating the CSC Scientific Interfacial Tensiometer
A brie description of how to calibrate your CSC Scientific Interfacial Tensiometer
Interface Response Functions
There are many processes which can limit the motion of an interface. For example, the diffusion of solute ahead of the interface, the transfer of atoms across the interface, etc. The functions describing each of these is known as an interface response function, which relates interfacial velocity to the free energy dissipated in that particular process. The contents should be of interest to scientists involved with the theory and practice of phase transformations. This is a lecture on the subject by Professor HKDH Bhadeshia, University of Cambridge. More details on www.msm.cam.ac.uk
Seminar: Interfacial Electron Transport
Jones Seminar on Science, Technology, and Society "Interfacial Electron Transport in Oxide Thin Films for Solar Energy" Presented by Rafael Jaramillo - Harvard University Friday, March 4, 2011
Linker-Assisted Assembly and Interfacial Electron-Transfer Reactivity...
In this video, David F. Watson from the University at Buffalo, The State University of New York discusses his Perspective published in issue 15 of the Journal of Physical Chemistry Letters. DOI: 10.1021/jz100571u
Collagen-Silica Vapor Coated Composite Scaffolds for Interfacial Tissue Engineering; Project 215
Collagen-Silica Vapor Coated Composite Scaffolds for Interfacial Tissue Engineering; Project 215 at the Michigan Tech Undergraduate Research Expo More info: www.expo.mtu.edu
Uniquem Drilling Fluid Chemicals - Inertia - Interfacial Tension Reducer
Interia - Uniquem - Interfacial Tension Reducer Drilling Fluid Chemicals -
Dynamic crack deflection and branching around an interface
A mode-I incident crack (like a small butterfly) approached the interface (an inclined thin line---interfacial angle 60 degrees). It deflected at the interface and formed a mixed-mode interfacial crack. This mixed-mode interfacial crack then kinked from the interface and branched into many mode-I cracks (similar to a beautiful dragonfly)--© Dr. LR Xu(Vanderbilt University) and Dr. AJ Rosakis(California Institute of Technology)
C343/Ti17 Interfacial electron transfer
Simulation of interfacial electron transfer in a Coumarin 343 sensitized Ti17 cluster. A coumarin electron is photoexcited to the LUMO+1.
Interfacial Violence: The Big Stir
This experiment uses ink to represent matter in the universe and demonstrates a "Big Stir" event that expels matter into the universe. The matter is initially contained within the minimal surface energy shape provide by the sphere. When a catastrophic event occurs to break the interfacial surface, an aperture allows flow of the trapped matter (dark matter?) to the vacuum of space. The matter interacts to form galaxies that coalesce based on their gravitational attraction. In this experiment, the ink drops slowly arrange themselves into larger clusters and massive objects because of the interaction of surface potential between drops at a distance(ie minimization of the interfacial surface energy). This may be preposterous but it is still worthwhile to visualize academically...the more you replay it, the more you see the complexity....check out videophysics.com
Dynamic interfacial debonding ahead of a main incident crack
Before a vertical incident crack approaches the interface (a thin horizontal line), interfacial crack suddenly initiates and propagates to left and right ends.© Dr. LR Xu (Vanderbilt University) and Dr. AJ Rosakis (California Institute of Technology)
Exp. 03 Tension Interfacial del Agua
La superficie del agua se comporta como una tela flexible. Esta tela "estira" a la gota de aceite tanto como puede. Pero observar que aquí la gota de aceite se "resiste" a ser estirada y "tira" hacia adentro tratando de mantenerse "chiquita", tanto como le es posible. Al final se llega a una situación de equilibrio entre estas dos tendencias representada en la figura de la izquierda. El detergente tiene la propiedad de disminuir la tensión interfacial del agua, es decir, cuando agregamos detergente la tela se debilita y ya no puede estirar tanto como al principio. Ahora bien, la gota de aceite sigue tirando hacia adentro igual que antes por que el detergente no le hace nada y por lo tanto en esta condición puede achicarse un poco, como se representa en la figura de la derecha.
Fenômeno Interfacial Turbulento entre Éster e Água
Quando uma gota de acetato de etila é depositada na superfície da água um estranho processo ocorre: as bordas da gota movem-se de maneira turbulenta, como se estivessem vivas. Vídeo produzido pela Equipe do Canal Fala Química.
Droplet pairs in a confluence channel meet and fuse under interfacial tension
Video related to research article appearing in Lab on a Chip "Microvalve-actuated precise control of individual droplets in microfluidic devices" Shaojiang Zeng, Bowei Li, Xiaoou Su, Jianhua Qin and Bingcheng Lin Read the article at: xlink.rsc.org
pop art interfacial / ipainteveryday 222 / ottograph
www.ipainteveryday.com This painting looks like al lot of facials looking at you. multilayered multimedia baby! Vandaag schilder ik een schilderij met allemaal gezichten door elkaar. By Ottograph
Nylon Rope Trick
This is a demonstration of an interfacial polymerization reaction. One reagent is dissolved in the aqueous phase (on the bottom) and the other in the organic phase on the top. The reagents diffuse to the interface to form a polymer film. As the film is lifted from the interface, more reagent molecules diffuse to the interface, and regenerate the film.
Mach3 with Smooth Stepper USB Interface Driving Servo CNC
This is my first test of the Beta version of Smooth Stepper. Compared the LPT port I have increased rapids from 370 IPM to 1100 IPM. And increased the rate of acceleration by 5X... These parts are being cut @ 150 IPM.
Flex Youtube Interface
I got an official statement from youtube that my youtube app does not confirm to the youtube terms of use. So i made a camtasia record to show it here. I think this app shows well how Flex and Zinc can be combined for rapid application development and it`sa nice example of an occasionally connected client. I hope that the same type of applications will also be possible with apollo. Here a the key feautures: - Search Youtube - Display Videos in a Custom (not Youtube) Player. - Save Videos Offline - Organize downloaded Videos in categories - Export downloaded Videos to ordinary AVI files and save them on your machine. more Info here: www.richapps.de
Attension Sigma Force Tensiometer Demonstration
www.attension.com Sigma is the highly accurate force tensiometer for surface tension measurements. Interfacial tension, dynamic contact angle and fully automatic CMC measurements can also be performed. In this video, we demonstrate how Sigma can be used for surface tension, critical micelle concentration, interfacial tension, sedimentation and powder wettability studies.
Faraday instability in a miscible interface
Authors: William Batson, Farzam Zoueshtiagh, Sakir Amiroudine, Ranga Narayanan, "Immiscible interface vs. miscible interface in Faraday instability," ArXiv, 14 Oct 2010: arxiv.org The video depicts the dynamics of a Faraday instability for both a miscible and an immiscible interface. The instability occurs when the system is subject to vibrations of sufficient amplitude at a given frequency. If the amplitude exceeds a critical value, a deflection of the interface appears and grows in time. In the miscible case presented here, water is carefully placed on top of brine and is shaken at a frequency of 3 hz with an amplitude of 40 mm. With surface tension absent, the instability is driven by the density difference of the two phases. In the immiscible case, a 10 cSt silicone oil is placed on top of a uorinated compound called FC 70, and is shaken at a frequency of 7 hz and an amplitude of 3 mm. While the inclusion of surface tension can help stabilize the deflection to a steady, standing wave pattern, this video shows the shaking can still be violent enough to induce mixing.
Lagrangian Vortex Sheets for Animating Fluids, SIGGRAPH 2012 Paper
Tobias Pfaff, Nils Thuerey, and Markus Gross Buoyant turbulent smoke plumes with a sharp smoke-air interface, such as volcanic plumes, are notoriously hard to simulate. The surface clearly shows small-scale turbulent structures which are costly to resolve. In addition, the turbulence onset is directly visible at the interface, and is not captured by commonly used turbulence models. We present a novel approach that employs a triangle mesh as a high-resolution surface representation combined with a coarse Eulerian solver. On the mesh, we solve the interfacial vortex sheet equations, which allows us to accurately simulate buoyancy induced turbulence. For complex boundary conditions we propose an orthogonal turbulence model that handles vortices caused by obstacle interaction. In addition, we demonstrate a re-sampling scheme to remove surfaces that are hidden inside the bulk volume. In this way we are able to achieve highly detailed simulations of turbulent plumes efficiently.
Nylon 6,10
The preparation of nylon 6,10 by an interfacial polycondensation reaction is demonstrated. The monomers are a 6-carbons diamine (hexamethylenediamine) and a 10-carbons diacid dichloride (sebacoyl chloride): the two reagents dissolved in separate phases polymerize at the interface. The rinsed thread of nylon thus obtained is very similar to the raw material prepared on industrial scale.
Dynamic evolution of gently deposited silicone oil on a solid substrate
This video shows the spreading of a silicone droplet deposited on a solid, conducting and grounded substrate in the presence of corona discharge. The corona discharge was established between a 15g hypodermic needle spaced 40 mm from a mirror finished stainless steel isothermal substrate. The initial size of the oil droplet was 3.78 mm. The silicone droplet is gently deposited on the surface. The oil droplet spreads over the substrate due to its own weight. The typical spreading diameter 30 seconds after deposition appears in the first frame was measured to be 16.4 30 seconds after droplet deposition, a step DC voltage is applied, which generates electric corona discharge, and the dynamic droplet evolution is recorded at the rate of 30 fps using a digital camera (SONY DCR-SX43). After applying the high voltage of 15 kV, it takes less than 100 milliseconds to accumulate the required surface charge on the interface for the evolution process to start. At the initial stage of the evolution (t less than 200 ms), the interface is flattened and the equilibrium contact angle increases to the advancing contact angle, while the position of contact line remains unchanged. For t greater than 400 ms, the spreading process is initiated and radial axisymmetric spreading occurs. At the beginning of the spreading process (t less than 5 sec), the contact line velocity is remarkably high (in the order of 10mm/s), but decreases by about two orders of magnitude with the elapsed time. As an ...
Crude Oil - Boil Over Explosion
A typical boilover process can be divided into three phases, ie a quasi-steady period, premonitory period and boilover period. Boilover is generally considered as one of the most important factors leading to the occurrence of boilover. Experimental examinations have demonstrated that boilover only happens after the fuel/water interfacial temperature has reached the boiling point of water, and that it was the violent seething of water at the interface which brought about boilover. The emission of micro-explosion noise, one of the most prominent premonitory phenomena of boilover has been examined in detail and found to be a result of the water boiling. The investigation on the premonitory micro-explosion noise of boilover illustrated that it is a possible means for early and remote detection of the occurrence of boilover in liquid pool fires. However, in a real fire situation, the micro-explosion is always contaminated by the environmental noise. Hence, pattern recognition techniques should be used to differentiate the micro-explosion noise from the unwanted background noise, and a predictive model should be used to evaluate the status of oil burning and predict the occurrence of boilover. A set of noise features and a practical model have been presented for these purposes.
movieAg3.avi
pubs.acs.org Crystalline silicon thin film with adsorbed silver nano-cluster experiences thermal lattice vibrations, for details see J. Phys. Chem. Lett. 1 (2010) 1073; DS Kilin, DA Micha, "Relaxation of photoexcited electrons at a nanostructured Si(111) surface" Relaxation pathways of photoinduced electronic redistribution at nanostructured semiconductor surfaces are obtained from time-dependent density matrix and ab initio electronic structure methods, giving electronic changes in energy and space over time. Tags: Thin film semiconductor metal interface silver nanocluster "vienna ab initio simulation package" "nonadiabatic dynamics" "nonadiabatic coupling" "ab initio nonadiabatic molecular dynamics"
DST60 - Automatic Digital Surface Tension Analyzer
This video is a tutorial of the DST60 Automatic Digital Surface Tension Analyzer. The tutorial provides basic information about surface tension and the operation of the DST60 Automatic Digital Surface Tension Analyzer.
Silicone oil droplet response at below and onset of the corona discharge
This video shows the behaviour of a silicone oil droplet at different applied voltages. By increasing the applied voltage from 0 to 9 kV, no recordable change in interface or contact line position is observed. Following a slight increase in the applied voltage to 9.2 kV, the corona discharge is initiated and corona current less than 1 µA was detected. The droplet interface is flattened and the equilibrium contact angle changes to the advancing contact angle after 700 ms elapsed time. Since the ion injection strength at the onset of corona discharge is significantly weaker than that at 15 kV, the required charge accumulation time for changing the contact line position is almost twice as long. As it is expected, at the onset of corona discharge, the contact line velocity is smaller than that at 15 kV applied voltage due to the weaker ion injection. This observation confirms that the corona discharge is responsible for spreading process. This research was published in the journal Proceedings of the Royal Society A in the paper: Spreading of a dielectric droplet through an interfacial electric pressure by Seyed Reza Mahmoudi, Kazimierz Adamiak and GS Peter Castle. The doi link for the article is rspa.royalsocietypublishing.org
Food Emulsion: Preparation and size distribution
Web Lecture _30-Nov-2011: Topics covered: Droplet size distribution of emulsion, definition of surface tension and interfacial tension, emulsion preparation. This is the first ever live lecture I conducted online with my students using Blackboard Collaborate, a component in Coursesites (the free version of Blackboard for educators). The live lecture went on quite smoothly. I recorded the whole session and did some editing before uploading it to YouTube. The recorded lecture is posted here solely for the purpose of education and in the spirit of sharing.
Cenco DuNOUY 70545 Tensiometer
This video is a tutorial. The tutorial provides basic information about how to remove the Tensiometer from it's packing container and an overview of the units basic operation.
Attension Theta Optical Tensiometer Demonstration
www.attension.com Theta is the advanced and versatile optical tensiometer for highly accurate measurements of contact angle, surface tension and interfacial tension. This video shows 3 measurement examples contact angle measurement, pendant drop measurement and meniscus measurement.
colloids1part3
Part three of lecture 1. Introduction to colloidal matter. Interfacial tension, Laplace pressure, Shape of colloidal particles. A complete set of lecture slides in pdf format can be downloaded from Google Docs at goo.gl
Discovery in 'pop' science reveals the elegant, complex way bubbles burst
Full story: www.labspaces.net This is the original movie of the bubble dynamics shown in Fig. 1E-G. The interfacial bubble ruptures, uncovering a dimple on the water surface. The high curvature of this dimple causes a jet to form; since this jet does not have enough kinetic energy to be propelled into the atmosphere it returns to the interface. Yet, around the jet, there is a ring of smaller bubbles formed during the film retraction. One of these daughter bubbles ruptures at 56 ms (left side of movie) Credit: Courtesy of Harvard School of Engineering and Applied Sciences
Surface Tensiometer: TRACKER Instrument
Measure all surface properties with automated tensiometer: Tracker. Surface (gas/liquid), interfacial (liquid/liquid) tensions, and contact angle (liquid/solid) are calculated by drop shape analysis through pictures taken by camera. Complete In-house software controls a motor and allows you to study surface properties and rheology in real time. More information: www.teclis.fr
The Most Powerful Air Turbo NoteBook PC Laptop Cooler
Greetings, We have the pleasure to introduce our new item - AirTurbo Cooler for Notebook PC and also for All- Cooling Purpose！！ Origin of Invention：: After 3 years of development and improvement, the world's first cross-flow notebook PC cooler has received multiple patents from the United States, China, Taiwan and other countries and is now ready for mass production. How to choose and buy a NB cooler: It is important to purchase a NB cooler that can cool all heat sources, which is a cross-flow cooler that can chill adapter, LCD screen, battery, hard drive, video card, CPU, DRAM, and CD-ROM drive, to extend the life of the your beloved NB! Many commercially available NB coolers are useless! Because it does not have sufficient air volume and speed, so the heat cannot be dispersed, instead it is circulated underneath!!! Cyan-Storm ！！ ● It assumes hydromechanics revolutionary design and high-precision undertone Cross-Flow Fan to blow strong interfacial airstream. The wind is meticulous, average and wide-spreading. It can resolve the cooling problem of multi-core CPU or multi-GPU Notebooks PC/ Laptop. ● Functioning theorem: the cooling pad drag in the air in vertical direction. With this direction, the air can cool down the LCD equipment first, and then eject wide-spreading interfacial airstream from the outlet in two directions which cools down the CPU, graphics card or DVD- ROM, Hard Disk on the back of NB. This is very versatile and is suitable for the heavy users ...
New Materials for a New Battery
Associate Professor Illona Kretzschmar's work in the area of interfacial engineering could lead to cheaper, more efficient batteries that will "allow a house to be self-sufficient" in energy production.
OK EPSCOR 2012 State Conference--3rd Place, Student Hybrid Poster Competition, Paula Zapata, OU.mp4
University of Oklahoma student Paula Zapata received 3rd place in the Oklahoma EPSCoR State Conference student hybrid poster competition. Zapata represented the OU School of Chemical, Biological and Material Engineering and the Center for Interfacial Reaction Engineering in the competition. Zapata's research was titled "Hydrophobic Zeolites for Biofuel Updgrading Reactions at the Liquid-Liquid Interface in Water/Oil Emulsions." Her faculty mentor was EPSCoR researcher Daniel Resasco.
mansingh survismeter in Nepal.flv
on 2 April 2010, Dr. Ajaya Bhattarai, Asst Professor, MMAMC-Tribhuvan University, Biratnagar, Nepal, visited Central University of Gujarat, for installation of survismeter at Tribhuvan University, for use for science students for research and experimenets. The survismeter measures surface tension, interfacial tension, wewtting coefficient and viscosity. Mr. Mukesh Chavda, Mr. Bharat B. Rathod coordinated the event of the discussion and Mr. Mayur Parmar documented the digitalized the event
Test: Marker Level Set
A not-so-interesting implementation of MLS-2 [1]. (I will probably have to tune some parameters.) Early tests seem to show that only one reinitialization iteration is required every 3 (possibly more) time steps. Note the reinitialization is applied only in a tubular neighborhood near the interface. The level set itself is moved using semi-Lagrangian advection, the particles are moved using second-order Runge-Kutta and a fast PDE-based reinitialization [2]. This first version runs in the CPU. The Zalesak's disk is defined by a radius of 60, slot width of 20 and slot height of 100. The grid size is 256 x 256. Similar (read: better) tests can be found in Enright's PhD thesis [3], which is illustrative and easy to read. [1] Mihalef et al., The Marker Level Set method: a new approach to computing accurate interfacial dynamics, Journal of Computational Physics, 2007. A copy can be downloaded from www.research.rutgers.edu [2] Peng et al., A PDE-Based Fast Local Level Set Method, Journal of Computational Physics, 1999. Can be downloaded from www.math.uci.edu [3] Enright, DP, Use of the Particle Level Set Method For Enhanced Resolution of Free Surface Flows. PhD thesis, Stanford University, 2002. Can be found in www.stanford.edu
An intercalation wave in LiFePo4 interacts with a crack
A particle is discharged at constant current, and a crack in a particle blocks the phase transformation wave and causes a temporary voltage drop. The interfacial energy is anisotropic, causing the interface to align vertically.
Binary Fluidization - Interface 1
This is a closeup of the interface between a mixed size phase (bottom half) and a small bead phase (upper half). This is in a Fluidized Bed.
Artist rendering of Bragg resonance in a 2-layer density stratified fluid
If appropriate (the so called Bragg) resonance condition is satisfied, surface waves, interfacial waves and bottom ripples can form triad and quartet resonance groups via which energy can flow from free surface to the interface or vice versa. For more information see: web.mit.edu
Beszélgetés Kaptay Györggyel [1/4]
Kaptay György, Dr. habil, tudomány doktora Születési hely, idõ: Tatabánya, 1960-03-02 Alapvégzettség: okleveles kohómérnök (1984) Nyelvismeret: angol , német , orosz Legfontosabb tudományos munkák, szabadalmak, publikációk: 1. 150 nyomtatott cikk (fele folyóirat, fele konferenciakiadvány, 4 könyvfejezet), 160 független hivatkozás 2. Kaptay G. On surface properties of molten aluminum alloys of oxidized surface - Materials Science Forum Vol.77 (1991) pp.315-330 3. Kaptay Gy.: Kerámiával erõsített fémmátrixú kompozitok gyártásának határfelületi vonatkozásai. I. rész. A határfelületi kritériumok levezetése. BKL, Kohászat, 130 (1997) No 5-6, 201-208 4. G.Kaptay, SAKuznetsov: Electrochemical synthesis of refractory borides from molten salts -- Review paper -- Plasmas & Ions, 2 (1999) 45-56. 5. G.Kaptay, E.Báder, L.Bolyán: Interfacial Forces and Energies Relevant to Production of Metal Matrix Composites -- Materials Science Forum, vols. 329-330 (2000) 151-156. 6. G.Kaptay: Interfacial criteria for stabilization of liquid foams by solid particles -- Colloids and Surfaces, A: Physicochemical and Engineering Aspects, 2004, vol.230, pp.67-80
Beszélgetés Kaptay Györggyel [2/4]
Kaptay György, Dr. habil, tudomány doktora Születési hely, idõ: Tatabánya, 1960-03-02 Alapvégzettség: okleveles kohómérnök (1984) Nyelvismeret: angol , német , orosz Legfontosabb tudományos munkák, szabadalmak, publikációk: 1. 150 nyomtatott cikk (fele folyóirat, fele konferenciakiadvány, 4 könyvfejezet), 160 független hivatkozás 2. Kaptay G. On surface properties of molten aluminum alloys of oxidized surface - Materials Science Forum Vol.77 (1991) pp.315-330 3. Kaptay Gy.: Kerámiával erõsített fémmátrixú kompozitok gyártásának határfelületi vonatkozásai. I. rész. A határfelületi kritériumok levezetése. BKL, Kohászat, 130 (1997) No 5-6, 201-208 4. G.Kaptay, SAKuznetsov: Electrochemical synthesis of refractory borides from molten salts -- Review paper -- Plasmas & Ions, 2 (1999) 45-56. 5. G.Kaptay, E.Báder, L.Bolyán: Interfacial Forces and Energies Relevant to Production of Metal Matrix Composites -- Materials Science Forum, vols. 329-330 (2000) 151-156. 6. G.Kaptay: Interfacial criteria for stabilization of liquid foams by solid particles -- Colloids and Surfaces, A: Physicochemical and Engineering Aspects, 2004, vol.230, pp.67-80
OK EPSCOR 2012 State Conference--Student Hybrid Poster Competition Awards Ceremony.mp4
Students from the University of Oklahoma and Oklahoma State University took the top prizes in a hybrid poster competition held recently during the Oklahoma EPSCoR Annual State Conference in Stillwater. Students who had performed research under the current OK EPSCoR Cellulosic Bioenergy RII Award were qualified to participate in the contest, which consisted of three-minute oral presentations and a formal scientific poster session. Each portion of the hybrid competition was competitively judged by an independent panel of judges made up of EPSCoR External Advisory Board members. Taiwo Omotoso, a student representing the University of Oklahoma's School of Chemical, Biological and Materials Engineering, received first place in the competition. OK EPSCoR researcher Steven Crossley served as Omotoso's mentor on the bioenergy project, which was titled "Influence of Ruthenium Titania Catalyst Pretreatment Conditions on the Upgrading of Biomass Fast-Pyrolysis Oil Vapors." Second place in the competition was awarded to Xin Zeng, representing Oklahoma State University's Department of Biochemistry and Molecular Biology. Zeng's faculty mentor on the project, which explored gene networks associated with tillering traits in switchgrass, was OK EPSCoR researcher Ramamurthy Mahalingam. Runners-up in the competition were: University of Oklahoma Botany and Microbiology student David Ponder presented research that investigated cell wall changes during grass lateral root emergence. Ponder's ...
Nylon production
Using microscale interfacial polymerization. We used sebacoyl chloride dissolved in dimethyl chloride and hexane-1,6-diamine in water for the two layers
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