The structural and optical properties of neodymium doped lithium niobate and yttrium aluminum garnet single crystals by Zainal Abidin Sham, Nurul Wahidah

“…In addition, a band in the range of 801 cm-1 - 803 cm-1 is assigned to Y – O bonds which have strong metal-oxygen stretching vibrations in tetrahedral arrangement. The IR peaks at 3290 cm-1 - 3369 cm-1 show the fundamental stretching of OH groups. …”
Get full text

Structural, luminescence properties and Judd-Ofelt analysis of rare-earth doped calcium-sulfoborophosphate and barium-sulfoborophosphate glasses by Yamusa, Yamusa Abdullahi

“…The infrared spectral measurements revealed the presence of vibrational groups of P-O linkage, BO3, BO4, P-O-P, O-P-O, S-O-B (sulfoborate network) groups and the bending B-O-B units in sulfoborophosphate structural network of glass samples. …”
Get full text

Synthesis and characterizations of dysprosium doped zinc-sodium-tellurite glass by Badamasi, Suleiman

“…Fourier transformed infrared spectra exhibited bonding vibrations at the wavenumber of 590-615 cm-1 and 772-817 cm-1 which are assigned to [TeO4] and [TeO3] glass network structural units, respectively. …”
Get full text

Absolute Absorption Cross-Section of the Ã←<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover accent="true"><mi>X</mi><mo>˜</mo></m... by Cuihong Zhang, Mirna Shamas, Mohamed Assali, Xiaofeng Tang, Weijun Zhang, Laure Pillier, Coralie Schoemaecker, Christa Fittschen

“…Two methods have been applied for the determination of the C₂H₅O₂ absorption cross-section: (i) based on Cl-atoms being converted alternatively to either C₂H₅O₂ by adding C₂H₆ or to hydro peroxy radicals, HO₂, by adding CH₃OH to the mixture, whereby HO₂ was reliably quantified on the second CRDS path in the 2ν₁ vibrational overtone at 6638.2 cm⁻¹ (ii) based on the reaction of C₂H₅O₂ with HO₂, measured under either excess HO₂ or under excess C₂H₅O₂ concentration. …”
Get full text

Effects of Fe, Mn Individual Doping and (Fe, Mn) Co-Doping on Ferromagnetic Properties of Co₂Si Powders by Jiang Zou, Lifeng Wang, Juan He, Bo Wu, Quan Xie

“…Their crystal structures, electrical conductivity, and magnetic properties were investigated via the X-ray diffraction analysis and by using a resistivity tester, vibrating sample magnetometer, and vector network analyser. …”
Get full text

Photophysical Study on the Rigid Pt(II) Complex [Pt(naphen)(Cl)] (Hnaphen = Naphtho[1,2-<i>b</i>][1,10]Phenanthroline and Derivatives by Maren Krause, Iván Maisuls, Stefan Buss, Cristian A. Strassert, Andreas Winter, Ulrich S. Schubert, Shruthi S. Nair, Benjamin Dietzek-Ivanšić, Axel Klein

“…The bdq complex showed a pronounced vibrational structure and an emission maximum at 586 nm. …”
Get full text

Optical and Structural Properties of Composites Based on Poly(urethane) and TiO₂ Nanowires by Malvina Stroe, Teodora Burlanescu, Mirela Paraschiv, Adam Lőrinczi, Elena Matei, Romeo Ciobanu, Mihaela Baibarac

“…The decrease in the ratio of the intensity of the Raman lines peaked at 658 cm⁻¹ and 635 cm⁻¹, which were assigned to the vibrational modes E_g in TiO₂ A and E_g in H₂Ti₃O₇ (I_TiO2-A/I_H2Ti3O7), respectively, from 3.45 in TiO₂ NWs to 0.94–0.96 in the TPU–TiO₂ NW composites, which indicates that the adsorption of TPU onto TiO₂ NWs involves an exchange reaction of TPU in the presence of TiO₂ NWs, followed by the formation of new hydrogen bonds between the -NH- of the amide group and the oxygen atoms of Ti_xO_2x-mn, Ti₂O₃, and Ti_0.91O. …”
Get full text

Boost the Crystal Installation and Magnetic Features of Cobalt Ferrite/M-Type Strontium Ferrite Nanocomposites Double Substituted by La³⁺ and Sm³⁺ Ions (2CoFe... by Mahmoud M. Hessien, Ali Omar Turky, Abdullah K. Alanazi, Mohammed Alsawat, Mohamed H. H. Mahmoud, Nader El-Bagoury, Mohamed M. Rashad

“…Spinel cobalt ferrite/hexagonal strontium hexaferrite (2CoFe₂O₄/SrFe_12−2xSm<i>_x</i>La<i>_x</i>O₁₉; <i>x</i> = 0.2, 0.5, 1.0, 1.5) nanocomposites were fabricated using the tartaric acid precursor pathway, and the effects of La³⁺–Sm³⁺ double substitution on the formation, structure, and magnetic properties of CoFe₂O₄/SrFe_12−2xSm<i>_x</i>La<i>_x</i>O₁₉ nanocomposite at different annealing temperatures were assayed through X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry. A pure 2CoFe₂O₄/SrFe₁₂O₁₉ nanocomposite was obtained from the tartrate precursor complex annealed at 1100 °C for 2 h. …”
Get full text

Discussion on Electron Temperature of Gas-Discharge Plasma with Non-Maxwellian Electron Energy Distribution Function Based on Entropy and Statistical Physics by Hiroshi Akatsuka, Yoshinori Tanaka

“…When the Boltzmann equation is solved, chemical kinetic equations are also simultaneously solved to determine essential excited species for the oxygen plasma, while vibrationally excited populations are solved for the nitrogen plasma, since the EEDF should be self-consistently found with the densities of collision counterparts of electrons. …”
Get full text

Triplet Emitting C^N^C Cyclometalated Dibenzo[c,h]Acridine Pt(II) Complexes by Joshua Friedel, Maren Krause, Rose Jordan, Iván Maisuls, Dana Brünink, Dominik Schwab, Nikos L. Doltsinis, Cristian A. Strassert, Axel Klein

“…All four complexes show in part vibrationally structured long-wavelength absorption bands peaking at around 530 nm. …”
Get full text

Bi₂Te₃ Thin Films Deposited by the Combination of Bi and Te Plasmas in a PLD Process by Laura A. Reyes-Verdugo, C. D. Gutiérrez-Lazos, J. Santos-Cruz, A. Chávez-Chávez, J. G. Quiñones-Galván

“…Likewise, Raman spectra exhibited the presence of signals that correspond to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi mathvariant="normal">E</mi><mi mathvariant="normal">g</mi><mn>2</mn></msubsup></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi mathvariant="normal">A</mi><mrow><mn>1</mn><mi mathvariant="normal">u</mi></mrow><mn>2</mn></msubsup></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi mathvariant="normal">A</mi><mrow><mn>1</mn><mi mathvariant="normal">g</mi></mrow><mn>2</mn></msubsup></mrow></semantics></math></inline-formula>(LO) vibrational modes of the same rhombohedral phase of Bi₂Te₃. …”
Get full text

Piezoelectric Ceramics with High d₃₃ Constants and Their Application to Film Speakers by Sowon Kim, Heechul Lee

“…Finite element analysis revealed that the use of a PEEK film and a smaller silicone–rubber film as a composite in the diaphragm realized optimal frequency-response characteristics; the vibrations generated by the piezoelectric element were amplified. …”
Get full text

Non-Covalent Forces in Naphthazarin—Cooperativity or Competition in the Light of Theoretical Approaches by Aneta Jezierska, Kacper Błaziak, Sebastian Klahm, Arne Lüchow, Jarosław J. Panek

“…In comparison, the solid state computed IR spectra revealed the environmental influence on the vibrational features. For each of them absorption regions were found between 2700–3100 cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula> and 2400–2850 cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula> at 60 K and 2300–3300 cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula> and 2300–3200 cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula> at 300 K respectively. …”
Get full text

Identificação de aspectos ambientais relacionados à produção de embalagens de perfumaria: contribuição para projetos sustentáveis Identification of environmental aspects associated... by Izabel Cristina Riegel, Daiana Staudt, Doriana Daroit

“…The growth of the Cosmetic, Toiletry, and Perfumery segment and increased product consumption have resulted in environmental impacts caused by packaging production, which generates solid residues, liquid effluents, atmospheric emissions, noise, and vibrations. This study has identified and organized the main environmental aspects related to the production process of packaging for the perfumery segment including materials and process selection and transformation. …”
Get full text

Spectra of Internal Friction in Polyethylene by Viktor A. Lomovskoy, Svetlana A. Shatokhina, Anatoly E. Chalykh, Vladimir V. Matveev

“…The theoretical analysis of the relationship between the anomalous changes of the vibrational process frequency <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ν</mi><mo>=</mo><mi>f</mi><mfenced open="(" close=")"><mi>T</mi></mfenced></mrow></semantics></math></inline-formula> and the shift modulus defect <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>G</mi><mo>=</mo><mi>f</mi><mfenced open="(" close=")"><mi>T</mi></mfenced></mrow></semantics></math></inline-formula> and the internal friction mechanisms for each of the dissipative loss processes detected on the spectrum <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>λ</mi><mo>=</mo><mi>f</mi><mfenced open="(" close=")"><mi>T</mi></mfenced></mrow></semantics></math></inline-formula> is carried out. …”
Get full text

An experimental study and modeling of Transformer-Coupled Toroidal Plasma processing of materials by Bai, Bo, Ph. D. Massachusetts Institute of Technology

Get full text
Get full text

Hydrogen bond rearrangements and the motion of charge defects in water viewed using multidimensional ultrafast infrared spectroscopy by Roberts, Sean T. (Sean Thomas)

Get full text

Digitally-assisted power converter system for solar energy harvesting applications by Bui, Anh Khoa

“…There are plenty of ambient energy sources ranging from the most common sources such as thermal energy, solar energy, and mechanical vibrations to new-developed sources like RF microwave, bioenergy, etc. …”
Get full text
Get full text

Collisional and photoexcitation of transition metal clusters by Parry, I

“…These features correspond to single-photon dissociation of Cu₃ to produce metastable D-states of the copper atom and vibrationally excited Cu₂. One series of features implies a previously-unobserved state of either Cu₂ or Cu₃.…”

Preparation, and electrical, magnetic and thermal investigation of polypyrrole-chitosan composite and polypyrrole-chitosan-iron oxide polymer nanocomposite by Amin, Jamileh

“…The reduced size of PPy−CHI and PPy−CHI−Fe3O4 particles was explained by the effect of Chitosan and iron oxide, the steric stabilization effect of CHI and a core-shell structure for PPy−CHI−Fe3O4 nancomposite which was confirmed by SEM and TEM. The results of Vibrating Sample Magnetometer (VSM) revealed the magnetic properties for various PPy−CHI− Fe3O4 nanocomposites strongly depended on the concentration loading of Fe3O4. …”
Get full text