Determination of zeta potential by means of a rotating disk: planar, particulate, and porous samples!
|
|
|
- Francis Wade
- 5 years ago
- Views:
Transcription
1 Determination of zeta potential by means of a rotating disk: planar, particulate, and porous samples! Paul J Sides! Zetametrix Inc! 5821 Kentucky Avenue! Pittsburgh, PA 15232! 1!
2 ZetaSpin: universal tool for determining zeta potential?! particles?! many applications! porous samples?! filters! "pcmp brushes! "CMP pads! fibrous samples! planar samples! (classic ZetaSpin)! 2!
3 What is zeta potential?! Diffuse Layer! Bulk Solution! Potential! 0! IHP! Plane of shear! OHP! Debye length! Distance! Zeta potential: electric potential at the plane of shear! 3!
4 Zeta potential: a message from the nano-world at the interface! Macroscopic data (streaming potential/current)! Surface Charge: Dissociation, Adsorption, Valence!!" 4!
5 Zeta potential and surface charge density! For a 1:1 electrolyte! q =!2!RT F" sinh " F # % $ ' # 2RT &!! zeta potential, volts (usually quoted on mv)! q!surface excess charge density (coul/m 2 ) in the diffuse layer! #!Debye length, m! $!permittivity of the liquid 78.3 x x coul/v!m! F!Faraday's constant, coul/equivalent! 5!
6 Consequences of zeta potential/charge at the interface! Electrostatic repulsion between particles in a dispersion! If! > kt e If! < kt e (Stability of dispersions such as paints, pigments, )! 6!
7 Consequences of zeta potential/charge at the interface! Electrostatic repulsion or attraction between a particle and the surface of another material depends on the zeta potential! If! > kt/e! Opposite charge leads to adsorption/ deposition! If! < kt/e! (irreversible adsorption of colloids and bioparticles on membranes, filtration )! 7!
8 Use of shear flow to measure zeta! #! -! Streaming potential! voltmeter! Liquid velocity! + Conducted bulk charge! Convected diffuse layer charge! # % 10 nm for a 1 mm of 1:1 salt in water! 8!
9 ZetaSpin: A rotating disk generates streaming potential! z! r! a! 9!
10 Streaming potential, surface current, and bulk current! Transition from surface current to bulk current Surface current!" # r$ " # $3 % Bulk current, at the surface 2"# $ 10!
11 The electric circuit near a rotating disk! surface current! return current (ohmic)! 11!
12 Uniform accessibility of the rotating disk! For electrokinetics:! i =1.020!3! "# For mass transfer:! N A = 0.620D A! 1/2! 1/2 Sc1/3 C A," Uniform accessibility in both cases!! flux of neutral species or ions 12!
13 Streaming potential and return current near the disk! equipotentials! electric field! 13!
14 ZetaSpin: apparatus and theory for flat samples! 2a! z! 1. Sensors! 2. Sample & support! 3. Liquid! 4. Motor! f ( z ) =! = f ( z ) 1.96!! s a! 1+ z 2!! 3 1" 2z 1+ z 2 + 2z 2 where z # & = conductivity! ' = kinematic viscosity! a = radius! $ = permittivity! z a 14!
15 Apparatus! 15!
16 Acquisition of streaming potential! ! ! Rotation: on! off! Streaming Potential (V)! ! ! ! ! Drift! ! 0! 10! 20! 30! 40! 50! Time(s)! Streaming potential! 16!
17 Sample types! 1. Originally developed for planar surfaces! 2. Can be used for studying particles and particle deposition! 3. Can be used for porous materials with open structures.! 17!
18 Zeta potential of a mineral: e.g. mica, silica, alumina! Scales et. al. data Nishimura et.al. data ZetaSpin; [KCl]=1mM 0! -20! Zeta Potential (mv) -40! -60! -80! -100! -120! -140! -160! [KCl] =1mM 2! 3! 4! 5! 6! 7! 8! 9! 10! ph 18!
19 Zeta potential of metals: gold, platinum, stainless steels! Potassium nitrate solution, approx. 1 mm! 19!
20 Zeta potential of CMP pads! Zeta Potential (mv)! 160! 120! 80! 40! 0! -40! -80! -120! -160! -200! -240! Flat Black Pad! Note values more negative than flat version of same material! Grooved Soft Black Pad (not subjeced to CMP)! Hard Grooved Pad P24!!"#$ % &'()*+,-. 2! 3! 4! 5! 6! 7! 8! 9! 10! ph! 20!
21 ZetaSpin: all purpose tool for determining zeta potential?! ZetaSpin works for planar surfaces.!! Can it make measurement on particles?!! Yes.! 21!
22 Adsorption/desorption of alumina nanoparticles on mica! 22!
23 Alumina nanoparticles on mica, effect of concentration! 23!
24 Adsorption of nanoparticles, effect of rotation rate: none?! 100! 60! #-potential (mv)! 20! -20! -60! -100! -140! 1000 rpm! 2000 rpm! 3000 rpm! 4000 rpm! -180! 0:00:00! 0:04:19! 0:08:38! 0:12:58! 0:17:17! 0:21:36! 0:25:55! 0:30:14! Time (h:m:s)! 24!
25 Initial adsorption, effect of rotation rate: 4000 rpm! just after! just before! 25!
26 Initial adsorption: 1000 rpm! 26!
27 Effect of rotation rate on initial measurements! 4000 rpm! 1000 rpm! 27!
28 AFM image of particles! Forward scan! Reverse scan! 28!
29 Silica on sapphire! Zeta Potential(mV)! 30! 20! 10! 0! -10! -20! -30! -40! -50! Silica (80nm) on sapphire!! 4000 RPM! [KNO 3 ]=0.25mM! ph ~ 3.65!!! 0! 100! 200! 300! 400! 500! Time(minutes)! 29!
30 TiO 2 on ITO for dye sensitized solar cells! ITO! TiO 2 particles! Zeta potential, mv! Panella et al. Rapid Deposition of Titania Nanoparticles for Dye Solar Cells! ph! 30!
31 Titration of ITO with and without adsorbed TiO 2! Zeta potential, mv! ITO! TiO 2 on ITO*! Panella, Ydstie, Prieve, Rapid Deposition of Titania Nanoparticles for Dye Solar Cells! ph! *adsorbed at ph = 5, then titrated!! 31!
32 Porous samples! Recently developed theory for measurements on porous samples.! 32!
33 Brushes for post cmp cleaning of wafers!? 33!
34 the Velcro experiment! (.!""#$%&'%()&%#(*+%&',#-(./01( /+((. /0(((. /0+((. /*(((. /*+((. (. () ) (./81( 34!
35 Theory for rotated porous samples! Inside the porous layer: v r (r)! Outside porous layer: v r (r,z)! 35!
36 Joseph model of flow into a rotating porous matrix! Darcy equation + rotational forces*! v =! k ( µ "p! F ) where ( )!F = 2!! # v +!! #! # r and! $!e z, r = re r + ze z v r =! k #"p µ "r! 2! v & % "#!! r# 2 ( $ ' v " =! k µ Rev r v z =! k "p µ "z Re! 2k! " ( ) p(z) = z z + 2h!" 2 1+ Re +!"µp 0 2 ( ) * Coriolis and central force arising from rotation about an axis! D. D. Joseph, Q. J. Mech. Appl. Math (1965).! z! r! 36!
37 Theoretical results! Equation for streaming potential! (Based on flow theory)!! s = a"#h $% & k 2 & 2 % 2 1 = "# 1! s! a$% h & + 4k2 " 2 a$% h# "#$! 2 slope = 4k 2!! 2 + "# " s "a!"h!"#! a!"h slope intercept intercept linear with inverse square of rotation "slope gives! h! intercept gives k! emphasizes! h! linear with square of rotation! slope gives k! "intercept gives! h! emphasizes higher rotation rates! 37!
38 Experimental verification:! Test sample: quartz frits!! Porosity:!50%! Pore size:! µm!!! µm!!! µm! Diameter:!25 mm! Thickness:!" 4 mm! 38!
39 Analysis for!h! Slope = 1! Log(-( 1 )! 4 different pore diameters! 1 = "# 1! s! a$% h & + 4k2 " 2 a$% h# "#$ slope intercept Log() -2 )! 39!
40 Experimental data: zeta potential of quartz (too low)! 0!! = -21 mv (low)! -0.5! -1! -1.5! y = x ! R$ = ! 1 1/phi!! s -2! -2.5! -3! -3.5! -4! -4.5! 0.E+00! 1.E-04! 2.E-04! 3.E-04! 4.E-04! 5.E-04! 6.E-04! 1/! 2 1/omega^2! 0.3 mm KCl! ph = 5.6! 25 mm diam! 5.34 mm thick! 51% porous! µm pores!! 40!
41 Analysis for the Darcy coefficient, reasonable values! fine frit k = 0.2!10-9 m 2!! 2 " coarse frit k = 1.2!10-9 m 2!! 2 41!
42 Missing effect for zeta: conductivity of porous layer! drain! current! source! current! leak current! 42!
43 Missing effect: result! Correction for sample conductivity sigma*! * "! h p! e a! s = a!"h!" # k 2! 2 " 2 g( z,! *) g( 0,! *) porosity = 50%! h = 5.3 mm! a = 12.5 mm! Quartz samples: g(z/a, "*) = 0.681! # = -30 mv! 43!
44 After analysis! Sample!!zeta, mv!k, m 2!!pore size, µm!! Quartz 00!!-24 ± 5!! ! ! Quartz 0S!!-28 ± 5!! ! ! Quartz 01!!-30 ± 5!! !90-150! Quartz 02!!-29 ± 5! !40-90! Literature values for quartz mv! One obtains the zeta potential and the Darcy coefficient of the as-is sample.! 44!
45 Test brushes for post cmp cleaning of wafers?! Singh et al., Entegris: Levitronix Conference, Feb , 2009, Santa Clara! 45!
46 Brush data, treated and untreated brushes! Zeta potential, normalized to Planarcore! at ph = 11! 0! -0.5! -1! -1.5! -2! -2.5! Lines are meant to guide the eye, only.! NZP Singh et al.! Untreated Planarcore AMAT Singh et al.! NZP ZetaSpin! Untreated Planarcore AMAT ZetaSpin! 2! 3! 4! 5! 6! 7! 8! 9! 10! 11! 12! ph! 46!
47 Summary! 1. The ZetaSpin can be used to determine the zeta potential of planar samples.! 2. The Zeta Spin can be used to determine the zeta potential of particles.!! 3. Adsorption of nanoparticles can be detected in real time.! 4. The Zeta Spin can be used to study the zeta potential of porous samples.!! 47!
Module 8: "Stability of Colloids" Lecture 38: "" The Lecture Contains: Calculation for CCC (n c )
The Lecture Contains: Calculation for CCC (n c ) Relation between surface charge and electrostatic potential Extensions to DLVO theory file:///e /courses/colloid_interface_science/lecture38/38_1.htm[6/16/2012
The CMP Slurry Monitor - Background
The CMP Slurry Monitor - Background Abstract The CMP slurry monitor uses electroacoustic and ultrasonic attenuation measurements to determine the size and zeta potential of slurry particles. The article
Electrostatic Forces & The Electrical Double Layer
Electrostatic Forces & The Electrical Double Layer Dry Clay Swollen Clay Repulsive electrostatics control swelling of clays in water LiquidSolid Interface; Colloids Separation techniques such as : column
Measuring sub-50nm particle retention of UPW filters
Measuring sub-50nm particle retention of UPW filters Don Grant and Gary Van Schooneveld 7121 Shady Oak Road, Eden Prairie, MN 55344 May 2, 2011 CTA 1286 2519 1 Introduction The critical feature size of
An Overview of the Concept, Measurement, Use and Application of Zeta Potential. David Fairhurst, Ph.D. Colloid Consultants, Ltd
An Overview of the Concept, Measurement, Use and Application of Zeta Potential David Fairhurst, Ph.D. Colloid Consultants, Ltd Fundamental Parameters that control the Nature and Behavior of all Particulate
SurPASS. Electrokinetic Analyzer for Solid Samples. ::: Innovation in Materials Science
SurPASS Electrokinetic Analyzer for Solid Samples ::: Innovation in Materials Science SurPASS For Solid Surface Analysis The SurPASS electrokinetic analyzer helps material scientists to improve surface
Particle Characterization Laboratories, Inc.
Analytical services Particle size analysis Dynamic Light Scattering Static Light Scattering Sedimentation Diffraction Zeta Potential Analysis Single Point Titration Isoelectric point determination Aqueous
Dispersion-Flocculation Behavior of Fine Lead Particles in an Organic Solvent
Materials Transactions, Vol. 49, No. 9 (2) pp. 2119 to 2123 #2 The Mining and Materials Processing Institute of Japan Dispersion-Flocculation Behavior of Fine Lead Particles in an Organic Solvent Masami
Supplementary Information
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2015 Supplementary Information Visualization of equilibrium position of colloidal particles at fluid-water
The Utility of Zeta Potential Measurements in the Characterization of CMP Slurries David Fairhurst, Ph.D. Colloid Consultants, Ltd
The Utility of Zeta Potential Measurements in the Characterization of CMP Slurries David Fairhurst, Ph.D. Colloid Consultants, Ltd HORIBA Scientific Webinar June 12 th 2013 Dispersed Systems An interface
*blood and bones contain colloids. *milk is a good example of a colloidal dispersion.
Chap. 3. Colloids 3.1. Introduction - Simple definition of a colloid: a macroscopically heterogeneous system where one component has dimensions in between molecules and macroscopic particles like sand
Lecture 3 Charged interfaces
Lecture 3 Charged interfaces rigin of Surface Charge Immersion of some materials in an electrolyte solution. Two mechanisms can operate. (1) Dissociation of surface sites. H H H H H M M M +H () Adsorption
Lecture 12: Electroanalytical Chemistry (I)
Lecture 12: Electroanalytical Chemistry (I) 1 Electrochemistry Electrochemical processes are oxidation-reduction reactions in which: Chemical energy of a spontaneous reaction is converted to electricity
Supporting Information
Supporting Information Retention and Release of Graphene Oxide in Structured Heterogeneous Porous Media under Saturated and Unsaturated Conditions Shunan Dong 1, Xiaoqing Shi 1, Bin Gao 3, Jianfeng Wu
Electrophoretic Deposition. - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode
Electrophoretic Deposition - process in which particles, suspended in a liquid medium, migrate in an electric field and deposit on an electrode no redox differs from electrolytic in several ways deposit
ISO Colloidal systems Methods for zetapotential. Part 1: Electroacoustic and electrokinetic phenomena
INTERNATIONAL STANDARD ISO 13099-1 First edition 2012-06-15 Colloidal systems Methods for zetapotential determination Part 1: Electroacoustic and electrokinetic phenomena Systèmes colloïdaux Méthodes de
Fundamental molecular electrochemistry - potential sweep voltammetry
Fundamental molecular electrochemistry - potential sweep voltammetry Potential (aka voltammetric) sweep methods are the most common electrochemical methods in use by chemists today They provide an efficient
Electrical double layer
Electrical double layer Márta Berka és István Bányai, University of Debrecen Dept of Colloid and Environmental Chemistry http://dragon.unideb.hu/~kolloid/ 7. lecture Adsorption of strong electrolytes from
Electrostatic Double Layer Force: Part III
NPTEL Chemical Engineering Interfacial Engineering Module 3: Lecture 4 Electrostatic Double Layer Force: Part III Dr. Pallab Ghosh Associate Professor Department of Chemical Engineering IIT Guwahati, Guwahati
Stability of colloidal systems
Stability of colloidal systems Colloidal stability DLVO theory Electric double layer in colloidal systems Processes to induce charges at surfaces Key parameters for electric forces (ζ-potential, Debye
Review: ISO Colloidal systems Methods for zeta potential determination
Review: ISO 13099 Colloidal systems Methods for zeta potential determination Mark Bumiller mark.bumiller@horiba.com www.horiba.com/particle New ISO Standards www.iso.org Outline ISO standards Zeta potential
ELECTROCHEMICAL SYSTEMS
ELECTROCHEMICAL SYSTEMS Third Edition JOHN NEWMAN and KAREN E. THOMAS-ALYEA University of California, Berkeley ELECTROCHEMICAL SOCIETY SERIES WILEY- INTERSCIENCE A JOHN WILEY & SONS, INC PUBLICATION PREFACE
Multimedia : Boundary Lubrication Podcast, Briscoe, et al. Nature , ( )
3.05 Nanomechanics of Materials and Biomaterials Thursday 04/05/07 Prof. C. Ortiz, MITDMSE I LECTURE 14: TE ELECTRICAL DOUBLE LAYER (EDL) Outline : REVIEW LECTURE #11 : INTRODUCTION TO TE ELECTRICAL DOUBLE
QUANTIFICATION OF PARTICLE AGGLOMERATION DURING CHEMICAL MECHANICAL POLISHING OF METALS AND DIELECTRICS
QUANTIFICATION OF PARTICLE AGGLOMERATION DURING CHEMICAL MECHANICAL POLISHING OF METALS AND DIELECTRICS Slurry Loop Shear Flow Agglomeration Inter-particle Force Aniruddh J. Khanna, Rajiv K. Singh Materials
International Journal of Engineering & Technology IJET-IJENS Vol:18 No:03 1
International Journal of Engineering & Technology IJET-IJENS Vol:18 No:03 1 Analytical Derivation of Diffusio-osmosis Electric Potential and Velocity Distribution of an Electrolyte in a Fine Capillary
Porous Media Induced Aggregation of Protein- Stabilized Gold Nanoparticles
Supporting Information 3 Porous Media Induced Aggregation of Protein- Stabilized Gold Nanoparticles 4 Matthew Y. Chan, and Peter J. Vikesland* Department of Civil and Environmental Engineering, Virginia
Surfactant-free exfoliation of graphite in aqueous solutions
Surfactant-free exfoliation of graphite in aqueous solutions Karen B. Ricardo, Anne Sendecki, and Haitao Liu * Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, U.S.A 1. Materials
Recap: Introduction 12/1/2015. EVE 402 Air Pollution Generation and Control. Adsorption
EVE 402 Air Pollution Generation and Control Chapter #6 Lectures Adsorption Recap: Solubility: the extent of absorption into the bulk liquid after the gas has diffused through the interface An internal
Dependence of Potential and Ion Distribution on Electrokinetic Radius in Infinite and Finite-length Nano-channels
Presented at the COMSOL Conference 2008 Boston Dependence of Potential and Ion Distribution on Electrokinetic Radius in Infinite and Finite-length Nano-channels Jarrod Schiffbauer *,1, Josh Fernandez 2,
Post Tungsten CMP Cleaner Development with Improved Organic and Particle Residue Removal on Silicon Nitride and Excellent Tungsten Compatibility
Post Tungsten CMP Cleaner Development with Improved Organic and Particle Residue Removal on Silicon Nitride and Excellent Tungsten Compatibility Ching-Hsun Chao, Chi Yen, Ping Hsu, Eugene Lee, Paul Bernatis
Supplementary Figure 1. Characterization of the effectiveness of ion transport in CNT aerogel sheets. (a)
Supplementary Figures Supplementary Figure 1. Characterization of the effectiveness of ion transport in CNT aerogel sheets. (a) Schematic drawing of experimental setup for measuring mass transfer coefficient.
Surface interactions part 1: Van der Waals Forces
CHEM-E150 Interfacial Phenomena in Biobased Systems Surface interactions part 1: Van der Waals Forces Monika Österberg Spring 018 Content Colloidal stability van der Waals Forces Surface Forces and their
Introduction to Zeta Potential Measurement with the SZ-100
Introduction to Zeta Potential Measurement with the SZ100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific www.horiba.com/us/particle What is Zeta Potential? Zeta potential is the charge on a particle at the
Single action pressing (from top)
www.komage.de Single action pressing (from top) Double action pressing with fixed die Typical course of the pressure during pressing and ejection (Single action) Upper punch Pressure Lower punch Time Green
Effect of sodium dodecyl sulfate on flow and electrokinetic properties of Na-activated bentonite dispersions
Bull. Mater. Sci., Vol. 27, No. 3, June 24, pp. 317 322. Indian Academy of Sciences. Effect of sodium dodecyl sulfate on flow and electrokinetic properties of Na-activated bentonite dispersions E GÜN STER,
Holographic Characterization of Agglomerates in CMP Slurries
Holographic Characterization of Agglomerates in CMP Slurries Total Holographic Characterization (THC) Comparison of THC to other technologies Dynamic Light Scattering (DLS) Scanning Electron Microscopy
Membrane Performance Forecast
Membrane Performance Forecast Interested in Membranes? Liquid Selectivity in s ea cr Zeta potential analysis with SurPASS 3 from Anton Paar opens up new possibilities in the characterization of membranes
Aggregation and Deposition Behavior of Carbon-Based Nanomaterials in Aquatic Environments
Aggregation and Deposition Behavior of Carbon-Based Nanomaterials in Aquatic Environments Menachem Elimelech Department of Chemical Engineering Environmental Engineering Program Yale University 2007 NSF
MEGASONIC CLEANING OF WAFERS IN ELECTROLYTE SOLUTIONS: POSSIBLE ROLE OF ELECTRO-ACOUSTIC AND CAVITATION EFFECTS. The University of Arizona, Tucson
MEGASONIC CLEANING OF WAFERS IN ELECTROLYTE SOLUTIONS: POSSIBLE ROLE OF ELECTRO-ACOUSTIC AND CAVITATION EFFECTS Manish Keswani 1, Srini Raghavan 1, Pierre Deymier 1 and Steven Verhaverbeke 2 1 The University
957 Lecture #13 of 18
Lecture #13 of 18 957 958 Q: What was in this set of lectures? A: B&F Chapter 2 main concepts: Section 2.1 : Section 2.3: Salt; Activity; Underpotential deposition Transference numbers; Liquid junction
Physics and Chemistry of Interfaces
Hans Jürgen Butt, Karlheinz Graf, and Michael Kappl Physics and Chemistry of Interfaces Second, Revised and Enlarged Edition WILEY- VCH WILEY-VCH Verlag GmbH & Co. KGaA Contents Preface XI 1 Introduction
Supporting Information. Single Particle Detection by Area Amplification Single Wall Carbon Nanotube Attachment to a Nanoelectrode
Supporting Information Single Particle Detection by Area Amplification Single Wall Carbon Nanotube Attachment to a Nanoelectrode Jun Hui Park, Scott N. Thorgaard, Bo Zhang, Allen J. Bard * Center for Electrochemistry,
Part II: Self Potential Method and Induced Polarization (IP)
Part II: Self Potential Method and Induced Polarization (IP) Self-potential method (passive) Self-potential mechanism Measurement of self potentials and interpretation Induced polarization method (active)
Cyclic Voltammetry. Objective: To learn the basics of cyclic voltammetry with a well-behaved echem system
Cyclic Voltammetry Objective: To learn the basics of cyclic voltammetry with a well-behaved echem system Introduction Cyclic voltammetry (CV) is a popular electroanalytical technique for its relative simplicity
Colloid Chemistry. La chimica moderna e la sua comunicazione Silvia Gross.
Colloid Chemistry La chimica moderna e la sua comunicazione Silvia Gross Istituto Dipartimento di Scienze di e Scienze Tecnologie Chimiche Molecolari ISTM-CNR, Università Università degli Studi degli Studi
In a typical routine, the pristine CNT (purchased from Bill Nanotechnology, Inc.) were
Supplementary Information Pd induced Pt(Ⅳ) reduction to form Pd@Pt/CNT core-shell catalyst for a more complete oxygen reduction Preparation of SH- functionalized CNT In a typical routine, the pristine
UvA-DARE (Digital Academic Repository) Electrokinetics in porous media Luong, D.T. Link to publication
UvA-DARE (Digital Academic Repository) Electrokinetics in porous media Luong, D.T. Link to publication Citation for published version (APA): Luong, D. T. (2014). Electrokinetics in porous media General
Initial position, x p (0)/L
.4 ) xp().2 ) ( 2L 2 xp Dc ( Displacement, /L.2.4.5.5 Initial position, x p ()/L Supplementary Figure Computed displacements of (red) positively- and (blue) negatively-charged particles at several CO 2
Electrokinetic Flow in a Nanochannel with an Overlapped Electrical Double Layer
Utah State University DigitalCommons@USU All Graduate Theses and Dissertations Graduate Studies 2015 Electrokinetic Flow in a Nanochannel with an Overlapped Electrical Double Layer Zhuorui Song Follow
Effect of Bacterial Polysaccharide Colonizing Environmental Surface on the Affinity and Deposition of Nanoparticles
Effect of Bacterial Polysaccharide Colonizing Environmental Surface on the Affinity and Deposition of Nanoparticles Yuliya Dzumedzey, J. Labille, C. Santaella, B.Cathala, C. Moreau CEREGE, Aix-Marseille
Copyright SOIL STRUCTURE and CLAY MINERALS
SOIL STRUCTURE and CLAY MINERALS Soil Structure Structure of a soil may be defined as the mode of arrangement of soil grains relative to each other and the forces acting between them to hold them in their
Colloidal Materials: Part III
NPTEL Chemical Engineering Interfacial Engineering Module 1: Lecture 4 Colloidal Materials: Part III Dr. Pallab Ghosh Associate Professor Department of Chemical Engineering IIT Guwahati, Guwahati 781039
SOLUTIONS TO CHAPTER 5: COLLOIDS AND FINE PARTICLES
SOLUTIONS TO CHAPTER 5: COLLOIDS AND FINE PARTICLES EXERCISE 5.1: Colloidal particles may be either dispersed or aggregated. (a) What causes the difference between these two cases? Answer in terms of interparticle
Particle Tracking on. Exosomes. ZetaView. Multiparameter NTA sizing, counting and zeta potential. C. Helmbrecht and H. Wachernig
Particle Tracking on Exosomes ZetaView Multiparameter NTA sizing, counting and zeta potential C. Helmbrecht and H. Wachernig Visual inspection of video 20130429_0009_269Exo9h_Dil10000 Agglomerates Approx.
Specific ion effects on the interaction of. hydrophobic and hydrophilic self assembled
Supporting Information Specific ion effects on the interaction of hydrophobic and hydrophilic self assembled monolayers T. Rios-Carvajal*, N. R. Pedersen, N. Bovet, S.L.S. Stipp, T. Hassenkam. Nano-Science
Understanding ph Troubleshooting and Diagnostic information
Understanding ph Troubleshooting and Diagnostic information The desire is to achieve an accurate, reliable measurement with a reasonable electrode life expectancy while minimizing frequency or complexity
Zeta Potential Analysis using Z-NTA
Zeta Potential Analysis using Z-NTA Summary Zeta Potential Nanoparticle Tracking Analysis (Z-NTA) adds measurements of electrostatic potential to simultaneous reporting of nanoparticle size, light scattering
Electrophoretic Light Scattering Overview
Electrophoretic Light Scattering Overview When an electric field is applied across an electrolytic solution, charged particles suspended in the electrolyte are attracted towards the electrode of opposite
Supporting Information
Copyright WILEY-VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2018. Supporting Information for Small, DOI: 10.1002/smll.201801523 Ultrasensitive Surface-Enhanced Raman Spectroscopy Detection Based
Light-Induced Atom Desorption in Alkali Vapor Cells
Fundamental Physics Using Atoms, 2010/08/09, Osaka Light-Induced Atom Desorption in Alkali Vapor Cells A. Hatakeyama (Tokyo Univ. Agr. Tech.) K. Hosumi K. Kitagami Alkali vapor cells UHV cell for laser
Reconciling DLVO and non-dlvo forces and their implications for ion rejection by a polyamide membrane
Supporting Information: Reconciling DLVO and non-dlvo forces and their implications for ion rejection by a polyamide membrane Yijue Diao, Mengwei Han, Josue A. Lopez-Berganza, Lauren Valentino, Benito
Experimental and Analytical Study of Submicrometer Particle Removal from Deep Trenches
0013-4651/2006/153 9 /C603/5/$20.00 The Electrochemical Society Experimental and Analytical Study of Submicrometer Particle Removal from Deep Trenches Kaveh Bakhtari, a Rasim O. Guldiken, a Ahmed A. Busnaina,
Nanoparticle Technology. Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting April 9 10, 2008 New Orleans
Nanoparticle Technology Dispersions in liquids: suspensions, emulsions, and foams ACS National Meeting April 9 10, 2008 New Orleans Wetting in nano ACS National Meeting April 9 10, 2008 New Orleans 10
GENERAL ENGINEERING AND RESEARCH. Nano Capsule CMP Slurries: Enabling Localized Control of Chemical Exposure
GENERAL ENGINEERING AND RESEARCH National Science Foundation SBIR Phase II Nano Capsule CMP Slurries: Enabling Localized Control of Chemical Exposure Robin V. Ihnfeldt, Ph.D. July 11, 2016 Outline Introduction
Supplementary Information for: Controlling Cellular Uptake of Nanoparticles with ph-sensitive Polymers
Supplementary Information for: Controlling Cellular Uptake of Nanoparticles with ph-sensitive Polymers Hong-ming Ding 1 & Yu-qiang Ma 1,2, 1 National Laboratory of Solid State Microstructures and Department
Correlation between rheological parameters and some colloidal properties of anatase dispersions
ANNUAL TRANSACTIONS OF THE NORDIC RHEOLOGY SOCIETY, VOL. 15, 7 Correlation between rheological parameters and some colloidal properties of anatase dispersions A.I. Gómez-Merino, F. J. Rubio-Hernández,
Fundamentals of the Metal Oxide Semiconductor Field-Effect Transistor
Triode Working FET Fundamentals of the Metal Oxide Semiconductor Field-Effect Transistor The characteristics of energy bands as a function of applied voltage. Surface inversion. The expression for the
Secondary Ag/AgCl Pseudo-Reference Electrode on Silicon Substrate
Secondary Ag/AgCl Pseudo-Reference Electrode on Silicon Substrate F. L. Almeida a, M. B. A. Fontes b, C. Jimenez c and I. Burdallo c a Laboratório de Sistema Integráveis LSI, University of São Paulo, São
Sanitary Engineering. Coagulation and Flocculation. Week 3
Sanitary Engineering Coagulation and Flocculation Week 3 1 Coagulation and Flocculation Colloidal particles are too small to be removed by sedimentation or by sand filtration processes. Coagulation: Destabilization
Overview. Lecture 5 Colloidal Dispersions
Physical Pharmacy Lecture 5 Colloidal Dispersions Assistant Lecturer in Pharmaceutics Overview Dispersed Systems Classification Colloidal Systems Properties of Colloids Optical Properties Kinetic Properties
Colloid stability. Lyophobic sols. Stabilization of colloids.
Colloid stability. Lyophobic sols. Stabilization of colloids. Lyophilic and lyophobic sols Sols (lyosols) are dispersed colloidal size particles in a liquid medium (=solid/liquid dispersions) These sols
Charging and Transport Dynamics of a Flow-
Charging and Transport Dynamics of a Flow- Through Electrode Capacitive Deionization System Supporting information Yatian Qu, a,b Patrick G. Campbell, b Ali Hemmatifar, a Jennifer M. Knipe, b Colin K.
Effect of physicochemical conditions on crossflow microfiltration of mineral dispersions using ceramic
Proceedings of European Congress of Chemical Engineering (ECCE-6) Copenhagen, 16- September 7 Effect of physicochemical conditions on crossflow microfiltration of mineral dispersions using ceramic P. Mikulášek,
István Bányai, University of Debrecen Dept of Colloid and Environmental Chemistry
Colloid stability István Bányai, University of Debrecen Dept of Colloid and Environmental Chemistry www.kolloid.unideb.hu (Stability of lyophilic colloids see: macromolecular solutions) Stabilities 1.
Nanotechnology in Biological Engineering II
Nanotechnology in Biological Engineering II THE EFFECT OF ELECTRICAL DOUBLE LAYER ON THE ELECTROCHEMICAL PROCESSES OF NANOMETER INTERDIGITATED ELECTRODES Xiaoling Yang 1 and Guigen Zhang 1,2,3 1 Micro/Nano
A simple on-plastic/paper inkjet-printed solid-state Ag/AgCl pseudoreference
Supporting Information A simple on-plastic/paper inkjet-printed solid-state Ag/AgCl pseudoreference electrode Everson Thiago Santos Gerôncio da Silva,, Sandrine Miserere, Lauro Tatsuo Kubota and Arben
MODELING OF SURFACE-FLUID ELECTROKINETIC COUPLING ON THE LAMINAR FLOW FRICTION FACTOR IN MICROTUBES
First International Conference on Microchannels and Minichannels April 24-25 2003, Rochester, New York, USA ICMM2003-1044 MODELING OF SURFACE-FLUID ELECTROKINETIC COUPLING ON THE LAMINAR FLOW FRICTION
Methods for charge and size characterization colloidal systems
Methods for charge and size characterization colloidal systems Content General Basics Stabino Measurement basics Applications NANO-flex Measurement basics Applications Nanoparticles Bulkphase of gold gold
Measure mass, thickness and structural properties of molecular layers Automated and fully integrated turn-key system
Product Information Q-Sense Omega Auto Real-time interface characterization Measure mass, thickness and structural properties of molecular layers Automated and fully integrated turn-key system 30 µl sample
Research and Development on European Cleaning Solutions for Radioactive Applications. Clean air solutions
Research and Development on European Cleaning Solutions for Radioactive Applications Dipl. Ing. Axel Mahler, R&D Director Europe, Camfil AB, Sweden 19.03.2014 Your speaker: Axel Mahler, R&D Director Europe
COLLOIDAL DISPERSIONS
COLLOIDAL DISPERSIONS Marlyn D. Laksitorini Lab. of Physical Pharmacy and Biopharmaceutics Dept.Pharmaceutics Gadjah Mada School of Pharmacy References Overview 1. Type of Dispersion 2. Example of Colloidal
Physical properties of porous membranes. Membranes D f S BET [m 2 /g] d peak [nm]
![Physical properties of porous membranes. Membranes D f S BET [m 2 /g] d peak [nm]](/thumbs/79/80072104.jpg "Physical properties of porous membranes. Membranes D f S BET [m 2 /g] d peak [nm]")
The Sol-Gel Preparation and Characterization of Nanoporous Silica Membrane with Controlled Pore Size T. Fujii, T. Izumi, Dept. of Food Sci., Niigata Univ. of Pharm. & Appl. Life Sci., Niitsu, Niigata 956-8603,
Rights statement Post print of work supplied. Link to Publisher's website supplied in Alternative Location.
Yield stress-zeta potential relationship of oxide dispersions with adsorbed polyacrylate: Steric effect and zeta potential at the flocculated-dispersed transition state Ong, B. C., Leong, Y-K., & Chen,
1044 Lecture #14 of 18
Lecture #14 of 18 1044 1045 Q: What s in this set of lectures? A: B&F Chapter 13 main concepts: Section 1.2.3: Diffuse double layer structure Sections 13.1 & 13.2: Gibbs adsorption isotherm; Electrocapillary
Hydrodynamic and Electro-Osmotic Studies on Transport through Nylon-66 Membrane Using Aqueous Aluminium Nitrate as Permeant
ISSN 2278 0211 (Online) Hydrodynamic and Electro-Osmotic Studies on Transport through Nylon-66 Membrane Using Aqueous Aluminium Nitrate as Permeant Manoj Kumar Ph.D. Scholar, Department of Chemistry, Centre
Principles of Electrochemistry Second Edition
Principles of Electrochemistry Second Edition Jiri Koryta Institute of Physiology, Czechoslovak Academy of Sciences, Prague HKJin Dvorak Department of Physical Chemistry, Faculty of Science, Charles University,
DLVO Theory and Non-DLVO Forces
NPTEL Chemical Engineering Interfacial Engineering Module 3: Lecture 5 DLVO Theory and Non-DLVO Forces Dr. Pallab Ghosh Associate Professor Department of Chemical Engineering IIT Guwahati, Guwahati 781039
Contents. Preface XI Symbols and Abbreviations XIII. 1 Introduction 1
V Contents Preface XI Symbols and Abbreviations XIII 1 Introduction 1 2 Van der Waals Forces 5 2.1 Van der Waals Forces Between Molecules 5 2.1.1 Coulomb Interaction 5 2.1.2 Monopole Dipole Interaction
Electrolyte Concentration Dependence of Ion Transport through Nanochannels
Electrolyte Concentration Dependence of Ion Transport through Nanochannels Murat Bakirci mbaki001@odu.edu Yunus Erkaya yerka001@odu.edu ABSTRACT The magnitude of current through a conical nanochannel filled
Next layer is called diffuse layer----ions not held tightly----thickness is > 1000 angstroms-- exact distance depends on ionic strength of soln
What does double layer of IPE look like?-see Fig.1.2.3 Also called Electrified Inteface At no external E appl -- inner Stern layer or Inner Helmholz plane (IHP) contains mostly solvent solvent molecules
1. Chemisorption is highly specific in nature. It occurs only if there is a possibility of chemical bonding between the adsorbent and the adsorbate.
Question 5.1: Write any two characteristics of Chemisorption. 1. Chemisorption is highly specific in nature. It occurs only if there is a possibility of chemical bonding between the adsorbent and the adsorbate.
CHAPTER 4 CHEMICAL MODIFICATION OF ACTIVATED CARBON CLOTH FOR POTENTIAL USE AS ELECTRODES IN CAPACITIVE DEIONIZATION PROCESS
CHAPTER 4 CHEMICAL MODIFICATION OF ACTIVATED CARBON CLOTH FOR POTENTIAL USE AS ELECTRODES IN CAPACITIVE DEIONIZATION PROCESS 4.1 INTRODUCTION Capacitive deionization (CDI) is one of the promising energy
It is the size of the
Chapter 2: Literature Review (Note: A modified form of this chapter will be published as Rheology and Colloidal Stability in Paints and Coatings, Proceedings of the Association of Formulation Chemists,
YOUR PARTNER IN PARTICLE CHARACTERIZATION
YOUR PARTNER IN PARTICLE CHARACTERIZATION SERVICES escubed limited provides comprehensive analytical and research and development services in colloidal, particulate and powder technology to customers across
IV. Transport Phenomena. Lecture 23: Ion Concentration Polarization
IV. Transport Phenomena Lecture 23: Ion Concentration Polarization MIT Student (and MZB) Ion concentration polarization in electrolytes refers to the additional voltage drop (or internal resistance ) across
PARTICLE ADHESION AND REMOVAL IN POST-CMP APPLICATIONS
PARTICLE ADHESION AND REMOVAL IN POST-CMP APPLICATIONS George Adams, Ahmed A. Busnaina and Sinan Muftu the oratory Mechanical, Industrial, and Manufacturing Eng. Department Northeastern University, Boston,
Number of pages in the question paper : 05 Number of questions in the question paper : 48 Modeling Transport Phenomena of Micro-particles Note: Follow the notations used in the lectures. Symbols have their
The effect of surface dipoles and of the field generated by a polarization gradient on the repulsive force
Journal of Colloid and Interface Science 263 (2003) 156 161 www.elsevier.com/locate/jcis The effect of surface dipoles and of the field generated by a polarization gradient on the repulsive force Haohao
Chapter 3 Membrane Processes for Water Production
Chapter 3 Membrane Processes for Water Production Application of Membrane Processes in Water Environment Fusion Tech Hydrology Molecular biology Surface Chem Nano particles Biofilm CFD Catalyst Space station
ELECTROKINETIC GROUNDWATER EXPLORATION: A NEW GEOPHYSICAL TECHNIQUE
181 ELECTROKINETIC GROUNDWATER EXPLORATION: A NEW GEOPHYSICAL TECHNIQUE Sukhyoun Kim, Graham Heinson & John Joseph CRC LEME, School of Earth and Environment Sciences, University of Adelaide, SA, 5005 ABSTRACT