1
|
Naidji B, Hallez L, Et Taouil A, Rebetez M, Hihn JY. Effect of cavitation intensity control on self-assembling of alkanethiols on gold in room temperature ionic liquids. Ultrason Sonochem 2021; 75:105610. [PMID: 34087756 PMCID: PMC8184662 DOI: 10.1016/j.ultsonch.2021.105610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/14/2021] [Accepted: 05/25/2021] [Indexed: 05/14/2023]
Abstract
This study investigates the effect of cavitation intensity on self-assembling of alkanethiol molecules on gold in room temperature ionic liquids (RTILs) under low frequency ultrasound irradiation (20 kHz). The use of RTILs, with low vapor pressure, enabled cavitation activity to be controlled up to quenching through pressure decrease within an argon-saturated atmosphere. This control possibility was used to acquire deeper insights into the role of cavitation on self-assembling processes. It was shown by electrochemical, contact angles and Polarization Modulation - Infrared Reflection Absorption Spectroscopy (PM-IRRAS) measurements that cavitation activates orientation and organization of self-assembled monolayers (SAM). X-ray Photoelectron Spectroscopy (XPS) revealed that, even if chemical adsorption of molecules is highly activated under ultrasound irradiation, it is not dependent on acoustic cavitation intensity.
Collapse
Affiliation(s)
- B Naidji
- Institut UTINAM, UMR 6213 CNRS, Univ. Bourgogne-Franche-Comte, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - L Hallez
- Institut UTINAM, UMR 6213 CNRS, Univ. Bourgogne-Franche-Comte, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - A Et Taouil
- Institut UTINAM, UMR 6213 CNRS, Univ. Bourgogne-Franche-Comte, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - M Rebetez
- Institut UTINAM, UMR 6213 CNRS, Univ. Bourgogne-Franche-Comte, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - J-Y Hihn
- Institut UTINAM, UMR 6213 CNRS, Univ. Bourgogne-Franche-Comte, 30 Avenue de Observatoire, 25009 Cedex Besançon, France.
| |
Collapse
|
2
|
Naidji B, Hallez L, Taouil AE, Rebetez M, Hihn JY. Influence of pressure on ultrasonic cavitation activity in room temperature ionic liquids: An electrochemical study. Ultrason Sonochem 2019; 54:129-134. [PMID: 30773492 DOI: 10.1016/j.ultsonch.2019.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 02/03/2019] [Accepted: 02/09/2019] [Indexed: 06/09/2023]
Abstract
This paper provides proofs of the respective contributions of dissolved gases and solvent vapor on cavitation activity in sonoreactors. This activity can be detected by electrochemistry because the fluctuating events measured at the electrode surface are only linked to physical effects of cavitation. As ionic liquids present very low volatilities, their vaporization is reduced, and cavitation bubbles only depend on the presence of gases. Then, cavitation activity may be trigged by reactor atmosphere control. Applying severe depression within an irradiated ionic liquid medium contributes to removing dissolved gases, thus quenching cavitation activity. A specific sonoelectrochemical cell was developed for this purpose. These first results show, through electrochemical experiments, that cavitation activity markedly decreases from atmospheric pressure down to 26 kPa. Below 26 kPa, it remains very low and stable. The same experiments were carried out in acetonitrile as a witness. As expected, no depression effect is observed on cavitation activity as it is supported by the volatile solvent contribution.
Collapse
Affiliation(s)
- B Naidji
- Institut UTINAM, UMR 6213 CNRS, Université de Bourgogne Franche-Comté, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - L Hallez
- Institut UTINAM, UMR 6213 CNRS, Université de Bourgogne Franche-Comté, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - A Et Taouil
- Institut UTINAM, UMR 6213 CNRS, Université de Bourgogne Franche-Comté, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - M Rebetez
- Institut UTINAM, UMR 6213 CNRS, Université de Bourgogne Franche-Comté, 30 Avenue de Observatoire, 25009 Cedex Besançon, France
| | - J-Y Hihn
- Institut UTINAM, UMR 6213 CNRS, Université de Bourgogne Franche-Comté, 30 Avenue de Observatoire, 25009 Cedex Besançon, France.
| |
Collapse
|
3
|
Rossi-Mossuti F, Fisch U, Rebetez M, Schoettker P, Gugliotta M, Kothbauer K, Morard M, Schucht P, Levivier M, Walder B, Fandino J. Standards for Surgical Treatment of Severe Traumatic Brain Injury in Switzerland: Results of a Nationwide Study. J Neurol Surg A Cent Eur Neurosurg 2014. [DOI: 10.1055/s-0034-1383796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
4
|
Altarev I, Baker CA, Ban G, Bison G, Bodek K, Daum M, Fierlinger P, Geltenbort P, Green K, van der Grinten MGD, Gutsmiedl E, Harris PG, Heil W, Henneck R, Horras M, Iaydjiev P, Ivanov SN, Khomutov N, Kirch K, Kistryn S, Knecht A, Knowles P, Kozela A, Kuchler F, Kuźniak M, Lauer T, Lauss B, Lefort T, Mtchedlishvili A, Naviliat-Cuncic O, Pazgalev A, Pendlebury JM, Petzoldt G, Pierre E, Pignol G, Quéméner G, Rebetez M, Rebreyend D, Roccia S, Rogel G, Severijns N, Shiers D, Sobolev Y, Weis A, Zejma J, Zsigmond G. Test of Lorentz invariance with spin precession of ultracold neutrons. Phys Rev Lett 2009; 103:081602. [PMID: 19792714 DOI: 10.1103/physrevlett.103.081602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Indexed: 05/28/2023]
Abstract
A clock comparison experiment, analyzing the ratio of spin precession frequencies of stored ultracold neutrons and 199Hg atoms, is reported. No daily variation of this ratio could be found, from which is set an upper limit on the Lorentz invariance violating cosmic anisotropy field b perpendicular < 2 x 10(-20) eV (95% C.L.). This is the first limit for the free neutron. This result is also interpreted as a direct limit on the gravitational dipole moment of the neutron |gn| < 0.3 eV/c2 m from a spin-dependent interaction with the Sun. Analyzing the gravitational interaction with the Earth, based on previous data, yields a more stringent limit |gn| < 3 x 10(-4) eV/c2 m.
Collapse
Affiliation(s)
- I Altarev
- Technische Universität München, D-85748 Garching, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Ban G, Bodek K, Daum M, Henneck R, Heule S, Kasprzak M, Khomutov N, Kirch K, Kistryn S, Knecht A, Knowles P, Kuźniak M, Lefort T, Mtchedlishvili A, Naviliat-Cuncic O, Plonka C, Quéméner G, Rebetez M, Rebreyend D, Roccia S, Rogel G, Tur M, Weis A, Zejma J, Zsigmond G. Direct experimental limit on neutron-mirror-neutron oscillations. Phys Rev Lett 2007; 99:161603. [PMID: 17995237 DOI: 10.1103/physrevlett.99.161603] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Indexed: 05/25/2023]
Abstract
In case a mirror world with a copy of our ordinary particle spectrum would exist, the neutron n and its degenerate partner, the mirror neutron n', could potentially mix and undergo nn' oscillations. The interaction of an ordinary magnetic field with the ordinary neutron would lift the degeneracy between the mirror partners, diminish the n' amplitude in the n wave function and, thus, suppress its observability. We report an experimental comparison of ultracold neutron storage in a trap with and without superimposed magnetic field. No influence of the magnetic field is found and, assuming negligible mirror magnetic fields, a limit on the oscillation time taunn' > 103 s (95% C.L.) is derived.
Collapse
Affiliation(s)
- G Ban
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Perelygin V, Abdullaev I, Knyazeva G, Kravets L, Petrova R, Brandt R, Ensinger W, Vater P, Fleischer R, Bondar Y, Rebetez M. On search and identification of tracks due to short-lived SHE nuclei in extraterrestrial crystals. RADIAT MEAS 2003. [DOI: 10.1016/s1350-4487(03)00135-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
7
|
Perelygin VP, Petrova RI, Stetsenko SG, Brandt R, Vater P, Rebetez M, Spohr R, Vetter J, Perron C. Study of fossil tracks due to 50 < or = Z < or = 92 galactic cosmic ray nuclei in meteoritic crystals: results and perspectives. RADIAT MEAS 1999; 31:609-14. [PMID: 12025846 DOI: 10.1016/s1350-4487(99)00193-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A new approach to the problem of investigation of charge and energy spectra of ultra heavy Galactic cosmic ray nuclei, based on fossil track study of extraterrestrial olivine crystals has been developed. The results of an investigation of ultra heavy Galactic cosmic ray nuclei (Z=50-92) in meteoritic olivine crystals are presented. The technique was based on calibration of olivine crystals with accelerated Xe, Au, Pb and U ions and well-controlled partial annealing of "fresh" and "fossil" tracks. It allows us to determine the charge spectra and abundances of cosmic ray nuclei based on fossil track length study in meteoritic and Moon crystals. The comparative studies of the spectra of "fossil' tracks and tracks due to 208Pb and 238U nuclei have shown that the group of 210 micrometers "fossil" tracks, first observed in 1980 at JINR is due to Th-U nuclei-products of recent r-process nucleosynthesis in our Galaxy. The method in principle allows one to resolve Pt-Pb peaks in fossil tracks, to establish the upper limit of the abundance of Z>110 nuclei in the Galactic cosmic rays at the level < or = 10(-3) to the abundance of actinide nuclei and to get information on the history of Z>50 cosmic ray nuclei in time interval up to 220 M.Y.
Collapse
|
8
|
Villa F, Grivet M, Rebetez M, Dubois C, Chambaudet A, Chevarier A, Martin P, Brossard F, Blondiaux G, Sauvage T, Toulemonde M. Damage morphology of Kr ion tracks in apatite: dependence on dE/dX. RADIAT MEAS 1999. [DOI: 10.1016/s1350-4487(99)00081-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
9
|
Igli H, Miellou J, Chambaudet A, Rebetez M, Grivet M, Radid A. Fission track annealing: Laslett and Carlson's laws formulated link bertagnolli's. RADIAT MEAS 1999. [DOI: 10.1016/s1350-4487(99)00164-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
10
|
Villa F, Grivet M, Rebetez M, Dubois C, Chambaudet A. Modeling the fission track etching process in apatite: Segmentation or crystallography influence. RADIAT MEAS 1995. [DOI: 10.1016/1350-4487(95)00098-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
|
12
|
Grivet M, Rebetez M, Chambaudet A, Ben Ghouma N. Electron microscopy analysis of krypton ion tracks induced in durango apatite. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0969-8078(93)90176-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|