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Journal articles on the topic 'Temperature induced dispersion'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

TAKEUCHI, Y., T. IDA, and K. KIMURA. "TEMPERATURE EFFECT ON GOLD NANODISPERSION IN ORGANIC LIQUIDS." Surface Review and Letters 03, no. 01 (1996): 1205–8. http://dx.doi.org/10.1142/s0218625x96002175.

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The temperature effect on gold nanodispersion in organic liquids was examined by optical absorption spectroscopy and transmission electron microscopy. It was found that the color of the dispersion changed from purple just after preparation under a low-temperature condition to reddish purple or pink with the elevation of temperature up to room temperature. The optical properties of this system strongly coupled with the state of dispersions such as isolation, coagulation, and coalescence to sediment. Heating the dispersion above room temperature induced the instability of the colloidal system wh

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2

Kawasaki, Hideya, Masahiko Miyahara, Mats Almgren, Göran Karlsson, and Hiroshi Maeda. "Temperature-induced sedimentation to dispersion of ionic vesicles." Journal of Colloid and Interface Science 284, no. 1 (2005): 349–53. http://dx.doi.org/10.1016/j.jcis.2004.09.078.

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3

Ivanov, Oleg V., Paulo Caldas, and Gaspar Rego. "High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings." Sensors 22, no. 19 (2022): 7119. http://dx.doi.org/10.3390/s22197119.

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In this paper, we investigated the evolution of the dispersion curves of long-period fiber gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced in the SMF28 fiber and in two B/Ge co-doped fibers. Computer simulations were performed based on previously published experimental data. We found that the dispersion curves belonging to the lowest-order cladding modes are the most affected by the temperature changes, but those changes are minute when considering cladding modes with dispersion turning points (DTP) in the telecommunication windows. The temperature sensit

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4

Borzycki, Krzysztof. "Temperature dependence of polarization mode dispersion in tight-buffered optical fibers." Journal of Telecommunications and Information Technology, no. 1 (June 25, 2023): 56–66. http://dx.doi.org/10.26636/jtit.2008.1.863.

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—Experiments and theoretical analysis of influence of temperature on polarization mode dispersion (PMD) in single mode optical fibers and cables are presented. Forces generated by contracting buffer create optical birefringence and increase fiber PMD at low temperatures. Single mode fiber (SMF) in 0.9 mm polymeric tight-buffer can exhibit an extra component of PMD exceeding 0.3 ps/√km in such conditions. On the other hand, tight-buffered spun nonzero dispersion-shifted fibers (NZDSF) and optical units with stranded single mode fibers have showed good stability of PMD over wide range of tempera

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5

Guo, Zhaofeng, Haotian Jia, Xiangen Liu, and Zhonghua Shen. "Inversion of temperature dependence of elastic constants using SAWS dispersion by Floquet-Bloch theory." Journal of Physics: Conference Series 2966, no. 1 (2025): 012004. https://doi.org/10.1088/1742-6596/2966/1/012004.

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Abstract In this paper, we propose a method grounded in Floquet-Bloch theory for calculating the SAW dispersion curve and invert temperature dependence of the elastic constant based on laser heating, where the temperature dependence is converted into a depth distribution. In our previous work, the computational method utilized perturbation theory, which becomes ineffective at high temperatures. We conduct a comparative analysis of SAW dispersion in TC4 with high surface temperatures and large temperature gradients induced by pulsed laser irradiation, utilizing both perturbation theory and Floq

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6

Alava, Cristina, and Brian R. Saunders. "Polymer stabilisers for temperature-induced dispersion gelation: Versatility and control." Journal of Colloid and Interface Science 293, no. 1 (2006): 93–100. http://dx.doi.org/10.1016/j.jcis.2005.06.027.

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7

Ashaduzzaman, Md, and Masashi Kunitake. "Aqueous Dispersion and Temperature Induced Reversible Fluorescence Properties of 1-Pyrenecarboxaldehyde." International Letters of Chemistry, Physics and Astronomy 6 (September 2013): 55–62. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.6.55.

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The fluorescence intensities for various vibronic fine structures in the 1-pyrenecarboxaldehyde (PyCHO) fluorescence show strong environment dependence. In aqueous solvent, the distribution of dye is highly depended on its concentration labels and varies from excimer to monomeric state. UV-Vis Spectroscopic analysis could not able to detect dye below 10-7M concentration, whereas a new monomeric peak at 342 nm was observed after heating and cooling treatment at above the concentration. At 10-8M concentration, only monomeric distribution of 1-PyCHO reveals a strong temperature (20-50 °C) induced

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8

Ashaduzzaman, Md, and Masashi Kunitake. "Aqueous Dispersion and Temperature Induced Reversible Fluorescence Properties of 1-Pyrenecarboxaldehyde." International Letters of Chemistry, Physics and Astronomy 6 (January 10, 2013): 55–62. http://dx.doi.org/10.56431/p-jqlhr1.

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The fluorescence intensities for various vibronic fine structures in the 1-pyrenecarboxaldehyde (PyCHO) fluorescence show strong environment dependence. In aqueous solvent, the distribution of dye is highly depended on its concentration labels and varies from excimer to monomeric state. UV-Vis Spectroscopic analysis could not able to detect dye below 10-7M concentration, whereas a new monomeric peak at 342 nm was observed after heating and cooling treatment at above the concentration. At 10-8M concentration, only monomeric distribution of 1-PyCHO reveals a strong temperature (20-50 °C) induced

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9

Hisham, Hisham K. "Low Dispersion Performance of Plastic Fiber Grating Using Genetic Algorithms." Al-Nahrain Journal for Engineering Sciences 21, no. 1 (2018): 45. http://dx.doi.org/10.29194/njes21010045.

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In this paper, we suppose a method for reducing the dispersion in the plastic optical fiber (POF) Bragg gratings based on optimizing the grating coupling-strength (ξ) using genetic algorithms. The effects of average refractive index (δn) and temperature (T) change on the dispersion properties are investigated numerically. It is found that the amplitude of the δn for low dispersion performance needs to be reduced at the cost of the design complexity of the POF Bragg gratings. Owing to the unusually large and negative thermo-optic coefficient of the POF, the dispersion due to the wavelength shif

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10

Pamungkas, Mauludi Ariesto, Ghozi Zhorif Althof, Farid Surya, Gancang Saroja, and Agus Dardiri. "Molecular Dynamics Simulations of Temperature-Induced Changes in Water Nanodroplet-Graphene Nanoribbon." Journal of Physics: Conference Series 2980, no. 1 (2025): 012034. https://doi.org/10.1088/1742-6596/2980/1/012034.

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Abstract Wettability is a critical factor in diverse fields such as oil recovery, microfluidics, and nanotechnology. The behavior of liquid droplets on solid surfaces, influenced by surface properties, has been extensively investigated. Understanding these interactions is essential for controlling droplet dispersion. This study investigates the impact of temperature on the interaction between water nanodroplets and graphene nanoribbons (GNRs) using molecular dynamics (MD) simulations. The results demonstrate that the potential energy, pressure, and enthalpy increase with the addition of 1-3 wa

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11

Pal, Debashis, and Suman Chakraborty. "New regimes of dispersion in microfluidics as mediated by travelling temperature waves." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2230 (2019): 20190382. http://dx.doi.org/10.1098/rspa.2019.0382.

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We unveil new regimes of dispersion in miniaturized fluidic devices, by considering fluid flow triggered by a travelling temperature wave. When a temperature wave travels along a channel wall, it alters the density and viscosity of the adjacent fluid periodically. Successive expansion–contraction of the fluid volume through a spatio-temporally evolving viscosity field generates a net fluidic current. Based on the temporal evolution of the axial dispersion coefficient, new regimes of dispersion—such as a short-time ‘oscillating regime’ and a large-time ‘stable regime’—have been identified, whic

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12

SINGH, PARAMPREET, and BANIBRATA MUKHOPADHYAY. "GRAVITATIONALLY INDUCED NEUTRINO ASYMMETRY." Modern Physics Letters A 18, no. 11 (2003): 779–85. http://dx.doi.org/10.1142/s0217732303009691.

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We study the propagation of Dirac neutrinos in gravitational backgrounds and show that the gravitational interaction can lead to neutrino asymmetry due to modifications in dispersion relation. We give some examples of spacetime geometries where such asymmetry can arise. This asymmetry would have contributed to the relic neutrino asymmetry through the interaction of neutrinos with primordial black holes before neutrinos decoupled. In the present epoch it may be generated in accretion around high temperature rotating black holes.

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13

Minakov, Alexander, and Christoph Schick. "Temperature Relaxation in Glass-Forming Materials under Local Fast Laser Excitations during Laser-Induced Microstructuring." Applied Sciences 14, no. 3 (2024): 1076. http://dx.doi.org/10.3390/app14031076.

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The ability to control the temperature distribution T(t,r) and the rate of temperature change Rt,r inside glasses is important for their microstructuring. The lattice temperature is considered at time t, exceeding the electron–phonon thermalization time, and at a distance r from the center of the model spherical heating zone. In order to describe thermal excitations, the heat capacity of glasses must be considered as a function of time due to its long-term relaxation. A method for the analytical calculation of T(t,r) and R(t,r) for glasses with dynamic heat capacity cdyn(t) is proposed. It is

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14

Debouzy, Jean-Claude, David Crouzier, Fréderic Bourbon, Malika Lahiani-Skiba, and Mohamed Skiba. "Interaction Study of an Amorphous Solid Dispersion of Cyclosporin A in Poly-Alpha-Cyclodextrin with Model Membranes by 1H-, 2H-, 31P-NMR and Electron Spin Resonance." Journal of Drug Delivery 2014 (May 5, 2014): 1–10. http://dx.doi.org/10.1155/2014/575719.

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The properties of an amorphous solid dispersion of cyclosporine A (ASD) prepared with the copolymer alpha cyclodextrin (POLYA) and cyclosporine A (CYSP) were investigated by 1H-NMR in solution and its membrane interactions were studied by 1H-NMR in small unilamellar vesicles and by 31P 2H NMR in phospholipidic dispersions of DMPC (dimyristoylphosphatidylcholine) in comparison with those of POLYA and CYSP alone. 1H-NMR chemical shift variations showed that CYSP really interacts with POLYA, with possible adduct formation, dispersion in the solid matrix of the POLYA, and also complex formation. A

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15

Ahmed, Md Shakil, and Ivan Glesk. "Mitigation of Temperature-Induced Dispersion in Optical Fiber on OCDMA Auto-Correlation." IEEE Photonics Technology Letters 29, no. 22 (2017): 1979–82. http://dx.doi.org/10.1109/lpt.2017.2758163.

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16

Fujii, Ichiro, Keisuke Yamato, Mikio Shimada, et al. "Relaxor Characteristics of BaTiO₃-Bi(Mg_1/2Ti_1/2)O₃ Ceramics." Key Engineering Materials 485 (July 2011): 31–34. http://dx.doi.org/10.4028/www.scientific.net/kem.485.31.

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Relaxor characteristics of (1-x)BaTiO3-xBi(Mg1/2Ti1/2)O3 (x=0.1–0.7) ceramics were investigated. Microstructural observation showed second phases and no domain structure for the sample with x=0.6. Deviation from the Curie-Weiss behavior was found in temperature dependence of the inverse permittivity for all the samples. The stronger dielectric dispersion was found for x=0.6 and 0.7 and they were described by the Vogel-Fulcher relationship. The temperature dependence of the remanent polarization and coercive field indicated the freezing temperature was 100~150°C for x=0.6. The strong dielectric

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17

Pandey, Pankaj Kumar, Priyanka Kaushik, Kamla Rawat, V. K. Aswal, and H. B. Bohidar. "Solvent hydrophobicity induced complex coacervation of dsDNA and in situ formed zein nanoparticles." Soft Matter 13, no. 38 (2017): 6784–91. http://dx.doi.org/10.1039/c7sm01222e.

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DNA binding to zein, a predominantly hydrophobic protein, was sustained as a stable dispersion in ethanol–water (80 : 20, % v/v) binary solvent at room temperature (25 °C) replacement of hydration sheath with ethanol–water interface.

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18

De La Vega, A., L. A. S. de A. Prado, J. Z. Kovacs, W. Bauhofer, and K. Schulte. "SWCNT as Cure-Induced Stress Sensors in Epoxy Nanocomposites." Solid State Phenomena 151 (April 2009): 48–53. http://dx.doi.org/10.4028/www.scientific.net/ssp.151.48.

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Given their unique set of properties, carbon nanotubes are rapidly gaining importance as stress/damage sensors in addition to as mere reinforcing elements in polymer composites. In this work, single-walled carbon nanotubes (SWCNT) are used to monitor internal stresses developing during the curing process of thermoset materials. SWCNT-epoxy composites with high dispersion quality were obtained via calandering. In situ Raman spectroscopy was used to identify chemical and thermal induced stresses by following the changes in the G’-band versus time and temperature. Thermal shrinkage prompts a pron

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19

Wang, Chuanxi, Kaili Jiang, Zhenzhu Xu, Huihui Lin, and Chi Zhang. "Glutathione modified carbon-dots: from aggregation-induced emission enhancement properties to a “turn-on” sensing of temperature/Fe3+ ions in cells." Inorganic Chemistry Frontiers 3, no. 4 (2016): 514–22. http://dx.doi.org/10.1039/c5qi00273g.

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Glutathione stabilized carbon dots show good dispersion, high fluorescence and aggregation-induced emission enhancement properties which could be used as a “turn-on” chemosensor for detecting temperature and Fe<sup>3+</sup> in aqueous solution and cells.

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20

Kim, Yoonyoung, Motonori Watanabe, Junko Matsuda, et al. "Chemo-mechanical strain effects on band engineering of the TiO2 photocatalyst for increasing the water splitting activity." Journal of Materials Chemistry A 8, no. 3 (2020): 1335–46. http://dx.doi.org/10.1039/c9ta11048h.

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Tensile strain induced by dispersion of Au particles is effective for stabilizing the anatase phase of TiO<sub>2</sub> at high temperature and also increasing the photocatalytic activity by an increase in the charge separation with band engineering.

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21

Verma, Sanjeev K., Anushri Gupta, Anita Kumari, and B. D. Indu. "Theory of renormalized phonon group velocity in high-temperature superconductors." Modern Physics Letters B 33, no. 27 (2019): 1950337. http://dx.doi.org/10.1142/s0217984919503378.

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The expressions for the renormalized phonon group velocity (RPGV) has been developed from renormalized phonon dispersion relations obtained with the help of impurity-induced anharmonic quantum dynamics of phonons via Green’s functions. It is observed that RPGV shows dependence on doping, phonon frequency, temperature, and anharmonicity. The [Formula: see text] superconductor has been taken for model calculations to successfully apply the new results of RPGV.

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22

Uchin, Ratchanon, Kittisak Suwannasang, and Adrian E. Flood. "Model of Temperature Cycle-Induced Deracemization via Differences in Crystal Growth Rate Dispersion." Chemical Engineering & Technology 40, no. 7 (2017): 1252–60. http://dx.doi.org/10.1002/ceat.201600746.

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23

Didrikas, Tomas, and Sture Hansson. "Effects of light intensity on activity and pelagic dispersion of fish: studies with a seabed-mounted echosounder." ICES Journal of Marine Science 66, no. 2 (2008): 388–95. http://dx.doi.org/10.1093/icesjms/fsn173.

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Abstract Didrikas, T., and Hansson, S. 2009. Effects of light intensity on activity and pelagic dispersion of fish: studies with a seabed-mounted echosounder. – ICES Journal of Marine Science, 66: 388–395. A seabed-mounted, upwards-pinging echosounder was used to study fish activity and pelagic dispersion in relation to fish size, light, and temperature. Four phases (day, dusk, night, dawn) in fish dispersion were distinguished over the diel cycle, and the swimming speed of fish varied among these phases. Notably, average swimming speed by day was twice as high as by night. For all phases comb

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24

Hempel, Nele-Johanna, Padryk Merkl, Matthias Manne Knopp, et al. "The Influence of Drug–Polymer Solubility on Laser-Induced In Situ Drug Amorphization Using Photothermal Plasmonic Nanoparticles." Pharmaceutics 13, no. 6 (2021): 917. http://dx.doi.org/10.3390/pharmaceutics13060917.

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In this study, laser-induced in situ amorphization (i.e., amorphization inside the final dosage form) of the model drug celecoxib (CCX) with six different polymers was investigated. The drug–polymer combinations were studied with regard to the influence of (i) the physicochemical properties of the polymer, e.g., the glass transition temperature (Tg) and (ii) the drug–polymer solubility on the rate and degree of in situ drug amorphization. Compacts were prepared containing 30 wt% CCX, 69.25 wt% polymer, 0.5 wt% lubricant, and 0.25 wt% plasmonic nanoparticles (PNs) and exposed to near-infrared l

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Qian, Xinlei, Xiaochao Wang, Xinghua Lu, Tianyu Zhang, and Wei Fan. "Suppression of Frequency Modulation to Amplitude Modulation Conversion with Modified Group Velocity Dispersion Compensation Device in the Front End of High-Power Lasers." Applied Sciences 12, no. 2 (2022): 884. http://dx.doi.org/10.3390/app12020884.

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The group velocity dispersion (GVD) occurring in the front end of high-power lasers is one of the primary factors leading to the conversion of frequency modulation (FM) to amplitude modulation (AM). In this paper, we propose a modified, active, closed-loop feedback compensation device for GVD-induced FM–AM conversion, using a two-dimensional, electric, adjustable mirror mount and parallel grating pair to improve the long-term stability, efficiency of adjustment, and accuracy of compensation. Experimental results of a 12 h FM–AM depth test revealed that the depth varied between 2.28% and 5.22%.

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26

Zhang, Hui, and Shaoqing Wang. "The structural stabilities of the intermetallics and the solid-state phase transformations induced by lattice vibration effects in the Al–Zr system by first-principles calculations." Journal of Materials Research 25, no. 9 (2010): 1689–94. http://dx.doi.org/10.1557/jmr.2010.0227.

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We investigated the structural stabilities of the intermetallics and the solid-state phase transformations induced by lattice vibration effects in the Al–Zr system by first-principles calculations. The calculated lattice parameters of all the phases and the phonon dispersion relations for pure Al and Zr are in good agreement with the experimental data. AlZr(oC8), Al4Zr5 (hP18), and Al3Zr5 (tI32) are predicted to be the high-temperature phases. To study the structural stabilities at high temperatures, the thermodynamic properties of the intermetallics are calculated via the linear response appr

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27

Salazar-Rodriguez, Roberto, Domingo Aliaga Guerra, Jean-Marc Greneche, et al. "Presence of Induced Weak Ferromagnetism in Fe-Substituted YFexCr1−xO3 Crystalline Compounds." Nanomaterials 12, no. 19 (2022): 3516. http://dx.doi.org/10.3390/nano12193516.

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Fe-substituted YFexCr1−xO3 crystalline compounds show promising magnetic and multiferroic properties. Here we report the synthesis and characterization of several compositions from this series. Using the autocombustion route, various compositions (x = 0.25, 0.50, 0.6, 0.75, 0.9, and 1) were synthesized as high-quality crystalline powders. In order to obtain microscopic and atomic information about their structure and magnetism, characterization was performed using room temperature X-ray diffraction and energy dispersion analysis as well as temperature-dependent neutron diffraction, magnetometr

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28

Ribis, Joël, Isabelle Mouton, Cédric Baumier, et al. "Nano-Structured Materials under Irradiation: Oxide Dispersion-Strengthened Steels." Nanomaterials 11, no. 10 (2021): 2590. http://dx.doi.org/10.3390/nano11102590.

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Oxide dispersion-strengthened materials are reinforced by a (Y, Ti, O) nano-oxide dispersion and thus can be considered as nanostructured materials. In this alloy, most of the nanoprecipitates are (Y, Ti, O) nano-oxides exhibiting a Y2Ti2O7 pyrochlore-like structure. However, the lattice structure of the smallest oxides is difficult to determine, but it is likely to be close to the atomic structure of the host matrix. Designed to serve in extreme environments—i.e., a nuclear power plant—the challenge for ODS steels is to preserve the nano-oxide dispersion under irradiation in order to maintain

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29

Reimers, Jeffrey R., Dwi Panduwinata, Johan Visser, et al. "A priori calculations of the free energy of formation from solution of polymorphic self-assembled monolayers." Proceedings of the National Academy of Sciences 112, no. 45 (2015): E6101—E6110. http://dx.doi.org/10.1073/pnas.1516984112.

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Modern quantum chemical electronic structure methods typically applied to localized chemical bonding are developed to predict atomic structures and free energies for meso-tetraalkylporphyrin self-assembled monolayer (SAM) polymorph formation from organic solution on highly ordered pyrolytic graphite surfaces. Large polymorph-dependent dispersion-induced substrate−molecule interactions (e.g., −100 kcal mol−1 to −150 kcal mol−1 for tetratrisdecylporphyrin) are found to drive SAM formation, opposed nearly completely by large polymorph-dependent dispersion-induced solvent interactions (70–110 kcal

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30

Moroni, M., and A. Cenedese. "Penetrative convection in stratified fluids: velocity and temperature measurements." Nonlinear Processes in Geophysics 13, no. 3 (2006): 353–63. http://dx.doi.org/10.5194/npg-13-353-2006.

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Abstract. The flux through the interface between a mixing layer and a stable layer plays a fundamental role in characterizing and forecasting the quality of water in stratified lakes and in the oceans, and the quality of air in the atmosphere. The evolution of the mixing layer in a stably stratified fluid body is simulated in the laboratory when "Penetrative Convection" occurs. The laboratory model consists of a tank filled with water and subjected to heating from below. The methods employed to detect the mixing layer growth were thermocouples for temperature data and two image analysis techni

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31

Liao, Po-Yu, Wen-Chung Liu, Chih-Hao Cheng, Yi-Hua Chiu, Ying-Yu Kung, and Shih-Lin Chang. "Temperature- and energy-dependent phase shifts of resonant multiple-beam X-ray diffraction in germanium crystals." Acta Crystallographica Section A Foundations and Advances 71, no. 4 (2015): 460–66. http://dx.doi.org/10.1107/s2053273315009006.

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This paper reports temperature- and energy-dependent phase shifts of resonant multiple-beam X-ray diffraction in germanium crystals, involving forbidden (002) and weak (222) reflections. Phase determination based on multiple-beam diffraction is employed to estimate phase shifts from (002)-based \{(002)(375)(37\overline{3})\} four-beam cases and (222)-based \{ (222)(\overline{5}3\overline{3})\} three-beam cases in the vicinity of the GeKedge for temperatures from 20 K up to 300 K. The forbidden/weak reflections enhance the sensitivity of measuring phases at resonance. At room temperature, the r

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Liu, Yuanliang, Yuting Zhang, Qiyong Zhang, Pengcheng Yang, and Xiaofei Lu. "Numerical investigation on the dispersion characteristics of cryogenic helium vapor cloud in confined space." IOP Conference Series: Materials Science and Engineering 1327, no. 1 (2025): 012185. https://doi.org/10.1088/1757-899x/1327/1/012185.

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Abstract Helium cryogenic systems have been widely used in large-scale scientific engineering fields utilizing superconducting technology. Once suffering from vacuum insulation failure, magnet quenching, material defect, mechanical fatigue, external impact, electrical joint failure, etc., the protective devices and key components of helium cryogenic system could rupture and fail. The cryogenic helium will then leak into surrounding environment, posing severe threat to the safety of personnel, equipment, and building. Previous studies mainly evaluated the potential hazards of extremely low temp

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33

Robertson, C., M. H. Mathon, B. K. Panigrahi, S. Amirthapandian, S. Sojak, and S. Santra. "Indentation response of model oxide dispersion strengthening alloys after ion irradiation up to 700 °C." Journal of Applied Physics 132, no. 17 (2022): 175107. http://dx.doi.org/10.1063/5.0092138.

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This paper presents an experimental investigation of irradiation-induced evolutions in three different oxide dispersion strengthening (ODS) alloys. High-dose, dual beam Ni–He ion irradiations are carried out up to 700 °C. The significant dose-dependent changes in the ODS particle size and number density are documented and interpreted in terms of specific point defect transport mechanisms, from small angle neutron scattering, TEM, and pulsed low-energy positron system measurements combined. The corresponding micro-mechanical changes in the alloys are evaluated based on the indentation response,

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34

Audureau, Nicolas, Fanny Coumes, Clémence Veith, et al. "Synthesis and Characterization of Temperature-Responsive N-Cyanomethylacrylamide-Containing Diblock Copolymer Assemblies in Water." Polymers 13, no. 24 (2021): 4424. http://dx.doi.org/10.3390/polym13244424.

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We have previously demonstrated that poly(N-cyanomethylacrylamide) (PCMAm) exhibits a typical upper-critical solution temperature (UCST)-type transition, as long as the molar mass of the polymer is limited, which was made possible through the use of reversible addition-fragmentation chain transfer (RAFT) radical polymerization. In this research article, we use for the first time N-cyanomethylacrylamide (CMAm) in a typical aqueous dispersion polymerization conducted in the presence of poly(N,N-dimethylacrylamide) (PDMAm) macroRAFT agents. After assessing that well-defined PDMAm-b-PCMAm diblock

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35

Quintino, Alessandro, Elisa Ricci, Emanuele Habib, and Massimo Corcione. "Buoyancy-induced convection of water-based nanofluids in differentially-heated horizontal semi-annuli." Thermal Science 21, no. 6 Part A (2017): 2643–60. http://dx.doi.org/10.2298/tsci170119136q.

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A two-phase model based on the double-diffusive approach is used to perform a numerical study on natural convection of water-based nanofluids in differentially-heated horizontal semi-annuli, assuming that Brownian diffusion and thermophoresis are the only slip mechanisms by which the solid phase can develop a significant relative velocity with respect to the liquid phase. The system of the governing equations of continuity, momentum, and energy for the nanofluid, and continuity for the nanoparticles, is solved by the way of a computational code which incorporates three empirical correlations f

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36

Ma, Hei-Lam, Xiaoqing Zhang, Kin-tak Lau, and San-qiang Shi. "Effect of nanoclay concentration on the lap joint shear performance of nanoclay/epoxy adhesive at cryogenic condition." Journal of Composite Materials 52, no. 18 (2017): 2477–82. http://dx.doi.org/10.1177/0021998317748202.

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Nanoclay has been a popular kind of nanofiller for polymer-based nanocomposites in industries since adding a small amount of it can effectively enhance the mechanical properties of polymer. In the present study, a suitable sonication time was first found for manufacturing nanoclay/epoxy adhesive. Then, the lap joint shear strengths of nanoclay/epoxy adhesives with different nanoclay content (0, 1, 3, 5 wt%) conditioned at both room temperature and cryogenic temperature environment were investigated. The main failure mechanism of all samples was interfacial failure between the first layer of gl

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Wang, Yong Liang, Bao Qiang Li, Yu Zhou, and De Chang Jia. "Mineralization of Magnetite Induced by Chitosan Hydrogel." Advanced Materials Research 105-106 (April 2010): 539–41. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.539.

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Mineralization is a powerful approach for fine inorganic minerals and organic/inorganic complexs with novel structure. The morphology of composites show the mineralized magnetite dispersed in chitosan hydrogel uniformly. The reason for uniform dispersion might be that the chitosan hydrogel restricted the moving ability of iron ions and the iron ions can only move to the nearest crystal nucleus. The magnetite content of magnetite/chitosan composite was approximately 12.6%. The mineralized magnetite have a significant interaction with chitosan which induced the magnetite/chitosan composite has a

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Tyutnev, Andrey, Vladimir Saenko, Ilshat Mullakhmetov, and Andrey Abrameshin. "Radiation-induced conductivity in polystyrene at extremely low (79 K) temperature." Journal of Applied Physics 132, no. 13 (2022): 135105. http://dx.doi.org/10.1063/5.0106159.

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Radiation-induced conductivity (RIC) of polystyrene has been studied experimentally and numerically in a broad time range from milliseconds to seconds at 79 K, which seems to have been done for the first time. It has been established that the hole dispersive transport is still operative but unlike the room temperature behavior it features an extremely small frequency factor (4 × 103 s−1) and accordingly low dispersion parameter (0.09). It has been shown that prompt conductivity per unit dose rate does not depend on temperature (290 or 79 K) and is equal to [Formula: see text] (±20%) at 4 × 107

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Ravensburg, Anna L., Philipp Keuter, Denis Music, Danilo J. Miljanovic, and Jochen M. Schneider. "Experimental and Theoretical Investigation of the Elastic Properties of HfV2O7." Crystals 10, no. 3 (2020): 172. http://dx.doi.org/10.3390/cryst10030172.

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We investigated the elastic properties of the HfV2O7 high-temperature phase, exhibiting negative thermal expansion, in a synergetic strategy of first-principle calculations and nanoindentation experiments performed on sputtered films. Self-consistent results were obtained for the measured elastic modulus (73 ± 14 GPa) and dispersion-corrected density functional theory calculations. The elastic properties of HfV2O7 are affected by long-range dispersion interaction, which may be induced by severe modification in the second-nearest neighbor O-O bond distance as obtained upon compression. HfV2O7 i

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Quintino, Alessandro, Marta Cianfrini, Paweł Ocłoń, Elisa Ricci, and M. Corcione. "Buoyancy-induced convection of water-based nanofluids from an enclosed heated cylinder." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 11 (2018): 2734–55. http://dx.doi.org/10.1108/hff-03-2018-0116.

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Purpose Laminar natural convection of nanofluids in a square cooled cavity enclosing a heated horizontal cylinder is studied numerically. This paper aims to investigate in what measure the nanoparticle size and average volume fraction, the cavity width, the cylinder diameter and position, the average temperature of the nanofluid and the temperature difference imposed between the cylinder and the cavity walls, affects the basic heat and fluid flow features, as well as the thermal performance of the nanofluid relative to that of the base liquid. Design/methodology/approach The four-equation syst

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Zhang, Jia, K. Q. Qiu, A. M. Wang, H. F. Zhang, M. X. Quan, and Z. Q. Hu. "Pressure-induced nanocrystallization of Zr55Al10Ni5Cu30 bulk metallic glass." Journal of Materials Research 17, no. 11 (2002): 2935–39. http://dx.doi.org/10.1557/jmr.2002.0425.

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The effect of pressure on the crystallization behavior of Zr55Al10Ni5Cu30 bulk metallic glass was investigated by differential scanning calorimetry, x-ray diffraction, and transmission electron microscopy. Although the crystallization products under high pressure were about the same as those under ambient pressure, the evident changes in the relative crystallization fraction of each phase were observed. The applied pressure enhanced the crystallization temperature. Pressure annealing of the bulk metallic glass produced a composite with dispersion of very fine nanocrystallites in the amorphous

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Saha, Nabarun, Arun Kumar, and Anurag Sharma. "Mode transition induced enhanced temperature sensitivity in long period waveguide gratings near dispersion turning point." Results in Optics 5 (December 2021): 100195. http://dx.doi.org/10.1016/j.rio.2021.100195.

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Rao, V. M., R. Balasubramaniam, and G. S. Upadhyaya. "High temperature oxidation and sulfate induced corrosion of an oxide dispersion strengthened Ni base superalloy." Materials at High Temperatures 13, no. 4 (1995): 175–79. http://dx.doi.org/10.1080/09603409.1995.11689516.

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Yan, Ming-Yuan, Yu Xing, Xiao-Yu Zhang, et al. "Structural distortion-induced low-temperature dielectric dispersion in lanthanide titanate pyrochlores." Applied Physics Letters 125, no. 10 (2024). http://dx.doi.org/10.1063/5.0223195.

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Rare-earth titanate pyrochlores have attracted significant attention for their unique magnetic frustration; however, research on the origin of low-temperature dielectric dispersion and the relationship between dielectric properties and structure lags far behind. Here, by systematically investigating the dielectric properties of representative rare-earth titanates R2Ti2O7 (R = La, Nd, Sm, Er, Yb, and Lu), we demonstrate that R2Ti2O7 with a cubic pyrochlore structure exhibits low-temperature dielectric dispersion behavior, while the other compounds with a monoclinic perovskite-like layered struc

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Laha, Apurba, S. Saha, and S. B. Krupanidhi. "Field Induced Dielectric Properties of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 Thin Films." MRS Proceedings 748 (2002). http://dx.doi.org/10.1557/proc-748-u14.11.

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ABSTRACTDC electric field induced dielectric properties of 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (PMN-PT) thin films were studied as a function of frequency at different temperatures. It was observed that the dielectric constant (ε) and dissipation factor (tanδ) were decreased in presence of bias field. The temperature of dielectric maxima was found to increase with increasing bias level. The low temperature (<Tm) frequency dispersion of dielectric permittivity was suppressed with the application of dc bias. After a certain bias voltage the relaxor property of films was disappeared i.e. the films e

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Ahmed, Md Shakil, and Ivan Glesk. "Mitigation of temperature induced dispersion in optical fiber on OCDMA auto-correlation." IEEE Photonics Technology Letters, September 29, 2017. https://doi.org/10.1109/LPT.2017.2758163.

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We have experimentally investigated the influence of temperature on the OCDMA auto-correlation recovered after transmission in an optical fiber link when exposed to different temperature settings. The OCDMA system uses two dimensional wavelength-hopping time-spreading (2D-WH/TS) codes based on picosecond multi-wavelength pulses. To the best of our knowledge, we have confirmed for the first time experimentally that a recovered OCDMA auto-correlation will be affected by transmission link temperature changes. Our simulation results are in good agreement with experimental observations. We have als

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Hisham, Hisham Kadhum. "Theory of Dispersion Reduction in Plastic Optical Gratings Fiber." Journal of Optical Communications, September 14, 2018. http://dx.doi.org/10.1515/joc-2018-0027.

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Abstract In this paper, we have proposed a way for reducing the dispersion level in plastic optical grating fiber by optimizing the grating-coupling strength (ξ) numerically. The effects of average refractive index (δn) and temperature (T) variation on the dispersion properties are investigated. Results show that, for reducing the dispersion level, the ξ parameter should be optimized and the amplitude of the δn needs to be reduced. Also results show that the dispersion due to the wavelength shift induced by the temperature variation will be eliminated by operating at high ξ value.

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Kumar, Sugam, and Vinod Kumar Aswal. "Evolution of Structure and Interaction in Surfactant-dependent Heat-Induced Gelation of Protein." Soft Matter, 2024. http://dx.doi.org/10.1039/d4sm00284a.

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Li, Rongtan, Xiaoyan Xu, Beien Zhu, et al. "In situ identification of the metallic state of Ag nanoclusters in oxidative dispersion." Nature Communications 12, no. 1 (2021). http://dx.doi.org/10.1038/s41467-021-21552-2.

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AbstractOxidative dispersion has been widely used in regeneration of sintered metal catalysts and fabrication of single atom catalysts, which is attributed to an oxidation-induced dispersion mechanism. However, the interplay of gas-metal-support interaction in the dispersion processes, especially the gas-metal interaction has not been well illustrated. Here, we show dynamic dispersion of silver nanostructures on silicon nitride surface under reducing/oxidizing conditions and during carbon monoxide oxidation reaction. Utilizing environmental scanning (transmission) electron microscopy and near-

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Xi, Chang, Xiangyu Zhang, Shiyin Wang та ін. "Controlling Noncovalent π–π Interactions in Dimers Toward Thermally Reversible Switching Between Monomer and Excimer Fluorescence". Advanced Functional Materials, 18 березня 2025. https://doi.org/10.1002/adfm.202502079.

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AbstractThermochromic fluorescent materials (TFMs) have garnered great attention due to their unique fluorescence transition responsive to temperature. However, the application of TFMs is limited due to defects such as low thermosensitivity and a high temperature‐responsive threshold value. In this case, this work explores a feasible strategy for designing TFMs. On the one hand, a sterically hindered unilateral tetraphenylethylene (TPE) substituent is introduced into pyrene chromophore in a meta‐linkage mode. This type of molecular architecture is aimed at the integration of both aggregation‐i

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