51
|
Mestres P, Martinez IA, Ortiz-Ambriz A, Rica RA, Roldan E. Realization of nonequilibrium thermodynamic processes using external colored noise. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2014; 90:032116. [PMID: 25314404 DOI: 10.1103/physreve.90.032116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 06/04/2023]
Abstract
We investigate the dynamics of single microparticles immersed in water that are driven out of equilibrium in the presence of an additional external colored noise. As a case study, we trap a single polystyrene particle in water with optical tweezers and apply an external electric field with flat spectrum but a finite bandwidth of the order of kHz. The intensity of the external noise controls the amplitude of the fluctuations of the position of the particle and therefore of its effective temperature. Here we show, in two different nonequilibrium experiments, that the fluctuations of the work done on the particle obey the Crooks fluctuation theorem at the equilibrium effective temperature, given that the sampling frequency and the noise cutoff frequency are properly chosen.
Collapse
Affiliation(s)
- Pau Mestres
- Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain
| | - Ignacio A Martinez
- Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain
| | - Antonio Ortiz-Ambriz
- Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain and Photonics and Mathematical Optics Group, Tecnológico de Monterrey, 64849 Mexico
| | - Raul A Rica
- Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain
| | - Edgar Roldan
- Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain and Grupo Interdisciplinar de Sistemas Complejos (GISC), Madrid, Spain
| |
Collapse
|
52
|
Wang J, Zhao K, Wu L. Electrical transport properties and interaction of heteropolyacid in N,N-dimethylformamide by dielectric spectroscopy. J Chem Phys 2014; 141:054502. [PMID: 25106592 DOI: 10.1063/1.4891722] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We present a dielectric spectroscopy study on binary electrolyte solutions composed of N,N-Dimethylformamide (DMF) and heteropolyacid (HPA). The HPA is composed of H(+) and Keggin polyoxometalate anion, [XW12O40](n-)(X = P, Si, with n = 3, 4). Conductivity was used to calculate the transport parameters such as diffusion coefficient and hydrodynamic radius of polyoxometalate (POM) anions. The hydrodynamic radius of P12W40(3-) and Si12W40(4-) are 5.552 Å and 5.526 Å, respectively, indicating that these POM anions remain unsolvated in DMF. The temperature dependences of conductivity obeyed the Arrhenius equation, suggesting that the activation energy of proton conduction process is independent with temperature. The calculated activation energy shows that the conduction process follows Grotthuss mechanism, i.e., proton is transported by hydrogen bond between DMF molecules. One dielectric relaxation observed around 10 MHz is considered to be associated with the POM-DMFH(+) ion-pairs formed by POM and protonated DMF. The interaction between anion and cation in POM-DMFH(+) ion-pairs are explained theoretically based on the Bruggeman's mixture theories and dipole rotation model. From this, the distance between POM and DMFH(+) are estimated as about 1.1 nm.
Collapse
Affiliation(s)
- Juan Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Kongshuang Zhao
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
| |
Collapse
|
53
|
Low-frequency dielectric dispersion of bacterial cell suspensions. Colloids Surf B Biointerfaces 2014; 119:1-5. [DOI: 10.1016/j.colsurfb.2014.04.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 03/26/2014] [Accepted: 04/23/2014] [Indexed: 11/23/2022]
|
54
|
Fan X, Zhao K. Aggregation behavior and electrical properties of amphiphilic pyrrole-tailed ionic liquids in water, from the viewpoint of dielectric relaxation spectroscopy. SOFT MATTER 2014; 10:3259-3270. [PMID: 24626335 DOI: 10.1039/c3sm53143k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The self-aggregation behavior of amphiphilic pyrrole-tailed imidazolium ionic liquids (Py(CH₂)₁₂mim⁺Br⁻: Py = pyrrole, mim = methylimidazolium) in water is investigated by dielectric spectroscopy from 40 Hz to 110 MHz. Dielectric determination shows that the critical micelle concentration (CMC) is 8.5 mM, which is lower than that for traditional ionic surfactants. The thermodynamic parameter of the micellization, the Gibbs free energy ΔG, was calculated for Py(CH₂)₁₂mim⁺Br⁻ and compared to those of the corresponding C(n)mim⁺Br⁻ (n = 12, 14). It was found that the main driven forces of the Py(CH₂)₁₂mim⁺Br⁻ aggregation were hydrophobic interaction and π-π interactions among the adjacent Py groups. Further, the structure of aggregation was speculated theoretically that Py groups partially insert into the alkyl chains and the staggered arrangement in micelles is formed. When the concentration of Py(CH₂)₁₂mim⁺Br⁻ is higher than CMC, two remarkable relaxations which originated from diffusion of counterions and interfacial polarization between the micelles and solution, were observed at about 1.3 MHz and 55 MHz. The relaxation parameters representing the real properties of the whole system were obtained by fitting the experimental data with Cole-Cole equation. A dielectric model characterizing the structure and electrical properties of spherical micelles was proposed by which the conductivity, permittivity and the volume fraction of micelles as well as electrical properties of solution were calculated from the relaxation parameters. An intriguingly high permittivity of about 150 for the micelle was found to be a direct consequence of the strong orientational order of water molecules inside the core of micelle, and essentially is attributed to the special structure of the micelle. Furthermore, the calculation of the interfacial electrokinetic parameters of the micelles, i.e., the surface conductivity, surface charge density and zeta potential, were also achieved based on the relaxation parameters and phase parameters from higher frequency relaxation. On the basis of the results obtained, the aggregation behaviours and interfacial electrokinetic properties of the special micelles are discussed.
Collapse
Affiliation(s)
- Xiaoqing Fan
- College of Chemistry, Beijing Normal University, Beijing, China.
| | | |
Collapse
|
55
|
Merlin J, Duval JFL. Electrodynamics of soft multilayered particles dispersions: dielectric permittivity and dynamic mobility. Phys Chem Chem Phys 2014; 16:15173-88. [DOI: 10.1039/c4cp01674b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A theory is presented for the electrodynamics of dispersions of spherical soft multilayered (bio)particles consisting of a hard core surrounded by step-function or diffuse-like polymeric layers with distinct electrohydrodynamic and structural features.
Collapse
Affiliation(s)
- Jenny Merlin
- Université de Lorraine
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC)
- Vandœuvre-lès-Nancy, France
- CNRS
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC)
| | - Jérôme F. L. Duval
- Université de Lorraine
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC)
- Vandœuvre-lès-Nancy, France
- CNRS
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC)
| |
Collapse
|
56
|
Beltramo PJ, Roa R, Carrique F, Furst EM. Dielectric spectroscopy of concentrated colloidal suspensions. J Colloid Interface Sci 2013; 408:54-8. [DOI: 10.1016/j.jcis.2013.07.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/15/2013] [Accepted: 07/16/2013] [Indexed: 10/26/2022]
|
57
|
Ilyas A, Persson M, van Praagh M. Dielectric properties of MSWI bottom ash for non-invasive monitoring of moisture. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:7053-7063. [PMID: 23344627 DOI: 10.1007/s10661-013-3085-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 01/07/2013] [Indexed: 06/01/2023]
Abstract
The dielectric procperties of MSWI bottom ash as a function of volumetric water content (VWC) are reported in this paper. The objective was to aid the development of microwave based non-invasive emission monitoring and control system for various bottom ash applications. The dielectric measurements were made, on a 1.5-year-old bottom ash, with an electrical network analyzer in microwave range (300 MHz-1.5 GHz). The VWC of the samples ranged between 0.05 and 0.40 m(3) m(-3). The relationship between the dielectric permittivity and the VWC was modeled with an empirical model and a physically based Birchak model (BM). The results showed that a linear relationship existed between the permittivity and the VWC at higher water contents (>0.25 m(3) m(-3)). However, at lower water contents (<0.25 m(3) m(-3)), the relationship between the permittivity and the WVC was affected by the composition of the bottom ash. The permittivity measurement, with the current method, was not affected by high salt concentrations (10 and 20 dS/m). The empirical model, as compared to BM, provided the best fit between the actual and the predicted water content. The root mean square error (RMSE) values were 0.008-0.010 and 0.06-0.09 m(3) m(-3) for the empirical and the Birchak model, respectively.
Collapse
Affiliation(s)
- Aamir Ilyas
- Department of Water Resources Engineering, Lund University, Box 118, 22100, Lund, Sweden.
| | | | | |
Collapse
|
58
|
Dielectric properties of dipicrylamine-doped erythrocytes, cultured cells and lipid vesicles. Bioelectrochemistry 2013; 92:14-21. [DOI: 10.1016/j.bioelechem.2013.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 02/14/2013] [Accepted: 02/25/2013] [Indexed: 11/23/2022]
|
59
|
|
60
|
Grosse C, Delgado A. Corrigendum to “Dielectric dispersion in aqueous colloidal systems” [Curr Opin Colloid Interface Sci (2010) 145–159]. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.02.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
61
|
Hollingsworth AD. Remarks on the determination of low-frequency measurements of the dielectric response of colloidal suspensions. Curr Opin Colloid Interface Sci 2013. [DOI: 10.1016/j.cocis.2013.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
62
|
Adams TNG, Leonard KM, Minerick AR. Frequency sweep rate dependence on the dielectrophoretic response of polystyrene beads and red blood cells. BIOMICROFLUIDICS 2013; 7:64114. [PMID: 24396548 PMCID: PMC3874050 DOI: 10.1063/1.4833095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 11/11/2013] [Indexed: 05/12/2023]
Abstract
Alternating current (AC) dielectrophoresis (DEP) experiments for biological particles in microdevices are typically done at a fixed frequency. Reconstructing the DEP response curve from static frequency experiments is laborious, but essential to ascertain differences in dielectric properties of biological particles. Our lab explored the concept of sweeping the frequency as a function of time to rapidly determine the DEP response curve from fewer experiments. For the purpose of determining an ideal sweep rate, homogeneous 6.08 μm polystyrene (PS) beads were used as a model system. Translatability of the sweep rate approach to ∼7 μm red blood cells (RBC) was then verified. An Au/Ti quadrapole electrode microfluidic device was used to separately subject particles and cells to 10Vpp AC electric fields at frequencies ranging from 0.010 to 2.0 MHz over sweep rates from 0.00080 to 0.17 MHz/s. PS beads exhibited negative DEP assembly over the frequencies explored due to Maxwell-Wagner interfacial polarizations. Results demonstrate that frequency sweep rates must be slower than particle polarization timescales to achieve reliable incremental polarizations; sweep rates near 0.00080 MHz/s yielded DEP behaviors very consistent with static frequency DEP responses for both PS beads and RBCs.
Collapse
Affiliation(s)
- T N G Adams
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| | - K M Leonard
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| | - A R Minerick
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| |
Collapse
|
63
|
Li D, Jung YS, Kim HK, Chen J, Geller DA, Shuba MV, Maksimenko SA, Patch S, Forati E, Hanson GW. The effect of sample holder geometry on electromagnetic heating of nanoparticle and NaCl solutions at 13.56 MHz. IEEE Trans Biomed Eng 2012; 59:3468-74. [PMID: 22997262 DOI: 10.1109/tbme.2012.2219049] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Electromagnetic absorption and subsequent heating of nanoparticle solutions and simple NaCl ionic solutions is examined for biomedical applications in the radiofrequency range at 13.56 MHz. It is shown via both theory and experiment that for in vitro measurements the shape of the solution container plays a major role in absorption and heating.
Collapse
Affiliation(s)
- Dongxiao Li
- Department of Electrical and Computer Engineering, Petersen Institute of NanoScience and Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
64
|
Beltramo PJ, Furst EM. Dielectric spectroscopy of bidisperse colloidal suspensions. J Colloid Interface Sci 2012; 380:34-41. [DOI: 10.1016/j.jcis.2012.04.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 04/20/2012] [Accepted: 04/26/2012] [Indexed: 11/30/2022]
|
65
|
Beltramo PJ, Furst EM. Transition from dilute to concentrated electrokinetic behavior in the dielectric spectra of a colloidal suspension. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10703-10712. [PMID: 22725847 DOI: 10.1021/la301876w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dielectric spectroscopy is used to measure the complex permittivity of 200 and 100 nm diameter polystyrene latex suspended in potassium chloride (KCl) solutions over the frequency range 10(4)-10(7) Hz as a function of particle volume fraction (ϕ) and ionic strength. Dilute suspension dielectric spectra are in excellent agreement with electrokinetic theory. A volume fraction dependence of the dielectric increment is observed for low electrolyte concentrations (0.01, 0.05, and 0.1 mM) above ϕ ≈ 0.02. This deviation from the dilute theory occurs at a critical frequency ω* that is a function of volume fraction, particle size, and ionic strength. The dielectric increment of suspensions at the highest salt concentration (1 mM) shows no volume fraction dependence up to ϕ = 0.09. Values of ω* are collapsed onto a master curve that accounts for the length and time scales of ion migration between neighboring particles. The measured conductivity increment is independent of volume fraction and agrees with theory after accounting for added counterions and nonspecific adsorption.
Collapse
Affiliation(s)
- Peter J Beltramo
- Department of Chemical and Biomolecular Engineering and Center for Molecular and Engineering Thermodynamics, University of Delaware, 150 Academy St., Newark, Delaware 19716, United States
| | | |
Collapse
|
66
|
Zhou J, Wei J, Ngai T, Wang L, Zhu D, Shen J. Correlation between Dielectric/Electric Properties and Cross-Linking/Charge Density Distributions of Thermally Sensitive Spherical PNIPAM Microgels. Macromolecules 2012. [DOI: 10.1021/ma300454h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jianfeng Zhou
- Hefei National Laboratory for Physical Sciences at
the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P.
R. China
| | - Jingjing Wei
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Li Wang
- Hefei National Laboratory for Physical Sciences at
the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P.
R. China
| | - Dan Zhu
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Material Science, Nanjing Normal University, Nanjing 210097, P. R. China
| | - Jian Shen
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Material Science, Nanjing Normal University, Nanjing 210097, P. R. China
| |
Collapse
|
67
|
Merlin J, Duval JFL. Metal speciation in a complexing soft film layer: a theoretical dielectric relaxation study of coupled chemodynamic and electrodynamic interfacial processes. Phys Chem Chem Phys 2012; 14:4491-504. [DOI: 10.1039/c2cp23611g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
68
|
Rong Z, Feng Q. How Insoluble Particles Affect the Solutions’ Conductivity: A Theory and the Test in NaCl and Chitosan Solutions. J Phys Chem B 2011; 115:12816-21. [DOI: 10.1021/jp202432u] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ziqin Rong
- Laboratory of Advanced Material, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Qingling Feng
- Laboratory of Advanced Material, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, P.R. China
| |
Collapse
|
69
|
Nair T, Symanowski JT, Gach HM. Comparison of complex permittivities of isotonic colloids containing single-wall carbon nanotubes of varying chirality. Bioelectromagnetics 2011; 33:134-46. [DOI: 10.1002/bem.20689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Accepted: 06/16/2011] [Indexed: 11/11/2022]
|
70
|
|
71
|
Ohshima H. Electrophoretic mobility of a highly charged soft particle: Relaxation effect. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.09.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
72
|
Wazawa T, Miyazaki T, Sambongi Y, Suzuki M. Hydration analysis of Pseudomonas aeruginosa cytochrome c551 upon acid unfolding by dielectric relaxation spectroscopy. Biophys Chem 2010; 151:160-9. [DOI: 10.1016/j.bpc.2010.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 06/21/2010] [Accepted: 06/22/2010] [Indexed: 10/19/2022]
|
73
|
|