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Huang J, Liu T, Zhang Y, Zhan C, Xie X, Yu Q, Yi D. Smartphone-Based Optical Fiber Fluorescence Temperature Sensor. SENSORS (BASEL, SWITZERLAND) 2022; 22:9605. [PMID: 36559974 PMCID: PMC9786135 DOI: 10.3390/s22249605] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/10/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Optical fiber sensors are one preferred solution for temperature sensing, especially for their capability of real-time monitoring and remote detection. However, many of them still suffer from a huge sensing system and complicated signal demodulate process. In order to solve these problems, we propose a smartphone-based optical fiber fluorescence temperature sensor. All the components, including the laser, filter, fiber coupler, batteries, and smartphone, are integrated into a 3D-printed shell, on the side of which there is a fiber flange used for the sensing probe connection. The fluorescence signal of the rhodamine B solution encapsulated in the sensing probe can be captured by the smartphone camera and extracted into the R value and G value by a self-developed smartphone application. The temperature can be quantitatively measured by the calibrated G/R-temperature relation, which can be unified using the same linear relationship in all solid-liquid-gas environments. The performance verifications prove that the sensor can measure temperature in high accuracy, good stability and repeatability, and has a long conservation time for at least 3 months. The proposed sensor not only can measure the temperature for remote and real-time detection needs, but it is also handheld with a small size of 167 mm × 85 mm × 75 mm supporting on-site applications. It is a potential tool in the temperature sensing field.
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Investigation of AOT/isooctane/water reverse microemulsion system with the presence of different mass ratios of SDS: Conductivity and water solubilization. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Guo Q, Yin L, Wang X, Yuan J, Zhang Q. An Environmentally Friendly Inverse Microemulsion Method to Synthesize Polyacrylamide. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15175927. [PMID: 36079308 PMCID: PMC9457084 DOI: 10.3390/ma15175927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/11/2022] [Accepted: 08/18/2022] [Indexed: 05/20/2023]
Abstract
Polyacrylamide (PAM) was prepared by a new method of inverse microemulsion polymerization, with (NH4)2S2O8-Na2SO3 as initiator and liquid paraffin/Span80-Op10/AM-H2O-NaAc as polymerization system in this paper. The effects of initiator dosage, emulsifier dosage, monomer concentration, oil-water ratio, and temperature on molecular weight, electrical conductivity, particle size distribution, and monomer conversion were studied as well. The results indicate that that the more stable Polyacrylamide (PAM) polymer was prepared under the conditions of initiator dosage of 0.4~0.5%, emulsifier dosage of 55~60%, temperature of 40~45 °C, hydrophile-lipophile balance (HLB) value of 8.0~8.2, and NaAc concentration of 3%.
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Affiliation(s)
- Qing Guo
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan 243002, China
- Department of Civil Engineering, Tongling University, Tongling 244000, China
| | - Longlong Yin
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan 243002, China
| | - Xiao Wang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan 243002, China
| | - Jing Yuan
- Department of Civil Engineering, Tongling University, Tongling 244000, China
- Donadeo Innovation Centre of Engineering, University of Alberta, 9211-116 Street NW, Edmonton, AB T6G 1H9, Canada
- Correspondence: or
| | - Qianfeng Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan 243002, China
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Salimi A, Sharif Makhmal Zadeh B, Godazgari S, Rahdar A. Development and Evaluation of Azelaic Acid-Loaded Microemulsion for Transfollicular Drug Delivery Through Guinea Pig Skin: A Mechanistic Study. Adv Pharm Bull 2020; 10:239-246. [PMID: 32373492 PMCID: PMC7191225 DOI: 10.34172/apb.2020.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 10/18/2019] [Accepted: 11/09/2019] [Indexed: 11/26/2022] Open
Abstract
Purpose: Azelaic acid is a natural keratolytic, comedolytic, and antibacterial drug that is used to treat acne. The topical application of azelaic acid is associated with problems such as irritation and low permeability. For dissolving, the problem is that microemulsion (ME) is used as a drug carrier. The aim of this study was to increase the azelaic acid affinity in the follicular pathway through ME.
Methods: Azelaic acid-loaded MEs were prepared by the water titration method. The properties of the MEs included formulation stability, particle size, drug release profile, thermal behavior of MEs, the diffusion coefficient of the MEs and skin permeability in the non-hairy ear skin and hairy abdominal skin of guinea pig were studied in situ.
Results: The MEs demonstrated a mean droplet size between 5 to 150 nm. In the higher ratios of surfactant/co-surfactant, a more extensive ME zone was found. All MEs increased the azelaic acid flux through both hairy and non-hairy skin compared with an aqueous solution of azelaic acid as a control. This effect of the ME was mainly dependent on the droplet diffusion coefficient and hydrodynamic radius. MEs with a higher diffusion coefficient demonstrated higher azelaic acid flux through hairy and non-hairy skin. Drug flux through both skins was affected by the surfactant/co-surfactant ratio in that the higher ratio increased the azelaic acid affinity into the follicular pathway.
Conclusion: Finally, the ME with the highest droplet diffusion coefficient and the lowest surfactant/co-surfactant ratio was the best ME for azelaic acid delivery into the follicular pathway.
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Affiliation(s)
- Anayatollah Salimi
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Pharmaceutics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Behzad Sharif Makhmal Zadeh
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Pharmaceutics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Salar Godazgari
- Department of Pharmaceutics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol, Iran
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Zhang L, Moralejo C, Anderson WA. A review of the influence of humidity on photocatalytic decomposition of gaseous pollutants on TiO
2
‐based catalysts. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23652] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lianfeng Zhang
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
- Laboratory of Ecological and Environmental ProtectionResearch Institute of Tsinghua University in Shenzhen Shenzhen China
| | - Carol Moralejo
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
| | - William A. Anderson
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
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Rahdar A, Aliahmad M, Kor AM, Sahoo D. Probing the reverse micelle environment with a cationic dye by varying oil and water content of micelles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:165-170. [PMID: 30453192 DOI: 10.1016/j.saa.2018.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/27/2018] [Accepted: 11/11/2018] [Indexed: 06/09/2023]
Abstract
In the present work, spectroscopic properties of crystal violet (CV) within water-in-hexane sodium base (2-ethyl hexyl) sulfosuccinate (AOT) reverse micellar environment was investigated as a function of water contents (W = [H2O]/[AOT] = 6,10) in AOT and also function of mass fraction of nanodroplet (MFD = 0.01, 0.04, 0.07, and 0.1) by using UV/visible, and fluorescence techniques. A deviation in the absorption spectra of crystal violet at the high CV concentration (0.002 M) was observed in the AOT reversed micelles. The Quenching in the emission intensity of crystal violet at high CV concentration and blue shift in λmax of fluorescence of dye was observed as a function of MFD in AOT RMs. At high concentration of dye, molecules of CV can be reside interfacial region but near core of AOT. At low dye concentration, the CV molecules also can be in interfacial region but far from core. The Stokes shift of CV at high concentration decreased with mass fraction of nano-droplet (MFD), whereas at the low CV concentration, its variation often increased. The ratio of ground state to the excited state dipole moment of crystal violet dye also affected by the change in W values and MFD values. The change in dipole moment and stokes shift indicates the different environment around CV for different W and MFD values.
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Affiliation(s)
- Abbas Rahdar
- Department of Physics, University of Zabol, Zabol, P. O. Box. 35856-98613, Islamic Republic of Iran.
| | - Mousa Aliahmad
- Department of Physics, University of Sistan and Baluchestan, Zahedan, P. O. Box. 35856-98613, Islamic Republic of Iran
| | - Adeleh Moradi Kor
- Department of Physics, University of Sistan and Baluchestan, Zahedan, P. O. Box. 35856-98613, Islamic Republic of Iran
| | - Dibakar Sahoo
- School of Physics, Sambalpur University Jyoti Vihar, Burla, Odisha 768019, India.
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Olsen R, Kvamme B. Effects of glycol on adsorption dynamics of idealized water droplets on LTA‐3A zeolite surfaces. AIChE J 2019. [DOI: 10.1002/aic.16567] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Richard Olsen
- University of BergenDept. of Physics and Technology Bergen Norway
| | - Bjørn Kvamme
- University of BergenDept. of Physics and Technology Bergen Norway
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Rahdar A, Almasi-Kashi M, Khan AM, Aliahmad M, Salimi A, Guettari M, Kohne HEG. Effect of ion exchange in NaAOT surfactant on droplet size and location of dye within Rhodamine B (RhB)-containing microemulsion at low dye concentration. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sharifi S, Alizadeh K, Shavakandi SM. Comments on “Photophysics of rhodamine B in the nanosized water droplets: A concentration dependence study”. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.11.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rahdar A, Almasi-Kashi M, Aliahmad M. Effect of chain length of oil on location of dye within AOT nanometer-sized droplet microemulsions at constant water content. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rahdar A, Almasi-Kashi M. Dynamic and spectroscopic studies of nano-micelles comprising dye in water/ dioctyl sodium sulfosuccinate /decane droplet microemulsion at constant water content. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rahdar A, Almasi-Kashi M, Mohamed N. Light scattering and optic studies of Rhodamine B-comprising cylindrical-like AOT reversed micelles. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rahdar A, Almasi-Kashi M. Dynamic light scattering of xanthan gum biopolymer in colloidal dispersion. J Adv Res 2016; 7:635-41. [PMID: 27489730 PMCID: PMC4950164 DOI: 10.1016/j.jare.2016.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 11/25/2022] Open
Abstract
The dynamical properties of nanogels of xanthan gum (XG) with hydrodynamic radius controlled in a size range from 5 nm to 35 nm, were studied at the different XG concentrations in water/sodium bis-2-ethylhexyl-sulfosuccinate (AOT)/decane reverse micelles (RMs) vs. mass fraction of nano-droplet (MFD) at W = 40, using dynamic light scattering (DLS). The diffusion study of nanometer-sized droplets by DLS technique indicated that enhancing concentration of the XG polysaccharide resulted in exchanging the attractive interaction between nano-gels to repulsive interaction, as the mass fraction of nano-droplets increased. The reorientation time (τr ) of water nanodroplets decreased with MFD for water-in-oil AOT micro-emulsion comprising high concentration (0.0000625) of XG. On the other hand, decreasing concentration of biopolymer led to increasing the rotational correlation time of water nanodroplets with MFD. In conclusion, a single relaxation curve was observed for AOT inverse microemulsions containing different XG concentrations. Furthermore, the interaction between nanogels was changed from attractive to repulsive versus concentration of XG in the AOT RMs.
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Affiliation(s)
- Abbas Rahdar
- Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, P.O. Box 87317-51167, Islamic Republic of Iran; Department of Physics, University of Zabol, Zabol, P.O. Box 35856-98613, Islamic Republic of Iran
| | - Mohammad Almasi-Kashi
- Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, P.O. Box 87317-51167, Islamic Republic of Iran; Department of Physics, University of Kashan, Kashan, P.O. Box 87317-51167, Islamic Republic of Iran
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