Complex refractive index in the infrared for NaCl, NaNO_3, and NaHCO_3 in water*

Querry, Marvin R.; Holland, Wayne E.; Waring, Richard C.

doi:10.1364/josa.66.000830

Cited by 16 publications

(7 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2), we note that the intensity is proportional to |L y L y L z | 2 . Frequency and concentration dependent refractive data for NaCl solutions in the visible and midinfrared [68][69][70] show that the real part of the refractive index increases with increasing salt concentration [ Fig. 5(a)] and the imaginary part of the refractive index decreases with increasing salt concentration [ Fig.…”

Section: A the Effect Of Bulk Solution Conditions On The Interfacialmentioning

confidence: 99%

Ions, metabolites, and cells: Water as a reporter of surface conditions during bacterial growth

Jarisz

Lane

Gozdzialski

et al. 2018

The Journal of Chemical Physics

View full text Add to dashboard Cite

Surface-specific nonlinear vibrational spectroscopy, combined with bulk solution measurements and imaging, is used to study the surface conditions during the growth of E. coli. As a result of the silica high surface charge density, the water structure at the silica-aqueous interface is known to be especially sensitive to pH and ionic strength, and surface concentration profiles develop that can be appreciably different from the bulk solution conditions. We illustrate that, in the presence of growing cells, a unique surface micro-environment is established as a result of metabolites accumulating on the silica surface. Even in the subsequent absence of the cells, this surface layer works to reduce the interfacial ionic strength as revealed by the enhanced signal from surface water molecules. In the presence of growing cells, an additional boost in surface water signal is attributed to a local pH that is higher than that of the bulk solution.

show abstract

Section: A the Effect Of Bulk Solution Conditions On The Interfacialmentioning

confidence: 99%

Ions, metabolites, and cells: Water as a reporter of surface conditions during bacterial growth

Jarisz

Lane

Gozdzialski

et al. 2018

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…The current refractive index data for dry sea salt is based on this Volz (1972) data, after it has been extended up to 50000 cm −1 (0.2 µm) by Shettle and Fenn (1979) using data compiled by Dorsey (1940). While additional measurements have been made on bulk solutions of NaCl (Querry et al, 1976;Yunus, 1992;Weis and Ewing, 1999;Neto et al, 2004), these may not be directly applicable to sea salt aerosol which contains additional compounds other than NaCl. Additionally, Weis and Ewing (1999) made measurements of NaCl droplets under controlled RH ranging from 15 to 95%.…”

Section: Introductionmentioning

confidence: 99%

Laboratory measurements of the optical properties of sea salt aerosol

Irshad¹,

Grainger²,

Peters³

et al. 2008

Preprint

View full text Add to dashboard Cite

Abstract. The extinction spectra of laboratory generated sea salt aerosols have been measured from 1 μm to 20 μm using a Bruker 66v/S FTIR spectrometer. Concomitant measurements include temperature, pressure, relative humidity and the aerosol size distribution. The refractive indices of the sea salt have been determined using a simple harmonic oscillator band model (Thomas et al., 2004) for aerosol with relative humidities between 0.1% to 100% sea salt. The resulting refractive index spectra show significant discrepancies when compared to existing sea salt refractive indices.

show abstract

“…35, for all concentrations. 42 The calculated A H values according to the above parameters are provided in Table 1.…”

Section: ■ Resultsmentioning

confidence: 97%

“…The dielectric constants of NaNO 3 solution depending on ion concentration were obtained by using the method from previous studies which shows the linear relationship between the salt concentration and dielectric constant which ranges from ε 3 ∼ 80 at 0 mM to ε 3 ∼ 60 at 2,000 mM . In addition, the refractive index of NaNO 3 solution ( n 3 ) was taken as ∼1.35, for all concentrations . The calculated A H values according to the above parameters are provided in Table .…”

Section: Resultsmentioning

confidence: 99%

In-Depth Study of the Interaction Mechanism between the Lignin Nanofilms: Toward a Renewable and Organic Solvent-Free Binder

Song

Park

Lim

et al. 2019

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Lignin is an abundant biorenewable resource with an annual production of 50 million metric tons. Despite the abundance and high potential for applications, only ∼2% of the produced lignin was used for industrial applications. One of the main reasons for the low applicability is the lack of fundamental studies. In particular, the molecular binding mechanism of lignin is a key for the development and design of lignin into higher-value products. In this study, the interaction forces between homogeneous lignin nanofilms as thin as a phenylpropane unit monolayer (∼11 Å) are directly measured using a surface forces apparatus (SFA) at various concentrations of intervening electrolyte solution. The measured adhesion force decreases with increasing electrolyte concentration, the inverse of what would be expected according to the electric double layer theory. These findings, along with detailed analyses using Derjaguin–Landau–Verwey–Overbeek (DLVO) and hydrophobic theories, strongly indicate that hydrophobic interaction accounts for a large proportion of the interaction forces. Additional measurements between methyl-terminated self-assembled monolayer and lignin film confirm that hydrophobic interactions dominated the overall interaction potential of lignin films. Furthermore, lignin-supplemented activated carbon composites show enhanced compressive strength, which indicates the potential use of lignin as an ecofriendly reinforcing binder.

show abstract

Complex refractive index in the infrared for NaCl, NaNO_3, and NaHCO_3 in water*

Cited by 16 publications

References 8 publications

Ions, metabolites, and cells: Water as a reporter of surface conditions during bacterial growth

Ions, metabolites, and cells: Water as a reporter of surface conditions during bacterial growth

Laboratory measurements of the optical properties of sea salt aerosol

In-Depth Study of the Interaction Mechanism between the Lignin Nanofilms: Toward a Renewable and Organic Solvent-Free Binder

Contact Info

Product

Resources

About