27 research outputs found
Effect of sputtering on the samples of iter-grade tungsten preliminarilly irradiated by tungsten ions: optical investigations
Effect of sputtering on the samples of iter-grade tungsten preliminarilly irradiated by tungsten ions: optical investigations
Effect of the grain size on the precipitate distribution of the dispersion-strengthened Π‘uΠ‘rZr alloy
Single trace terahertz spectroscopic ellipsometry
Β© 2019 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited"[EN] A new technique for terahertz time-domain ellipsometry is presented. Information of reflection coefficients of the sample in two orthogonal polarizations is encoded on the same terahertz trace by using a birefringent medium. This allows for single measurement refractive index extraction without the need for a moving analyzer. A comparison of the complex refractive index measurements of optical grade fused silica and non birefringent sapphire are carried out both in reflection ellipsometry and with a standard terahertz transmission spectrometer showing good agreement. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing AgreementMinisterio de Ciencia, InnovaciΓ³n y Universidades (TEC2016-80906-R).BΓ‘ez-Chorro, MΓ.; Vidal Rodriguez, B. (2019). Single trace terahertz spectroscopic ellipsometry. Optics Express. 27(24):35468-35474. https://doi.org/10.1364/OE.27.035468S35468354742724Bockelt, A., Palaci Lopez, J., & Vidal, B. (2015). All-Fiber Centralized Architecture for Parallel Terahertz Sensors. IEEE Transactions on Terahertz Science and Technology, 5(1), 137-144. doi:10.1109/tthz.2014.2373313Khazan, M., Meissner, R., & Wilke, I. (2001). Convertible transmission-reflection time-domain terahertz spectrometer. Review of Scientific Instruments, 72(8), 3427-3430. doi:10.1063/1.1384433Liu, H.-B., Chen, Y., Bastiaans, G. J., & Zhang, X.-C. (2006). Detection and identification of explosive RDX by THz diffuse reflection spectroscopy. Optics Express, 14(1), 415. doi:10.1364/opex.14.000415Sanjuan, F., Bockelt, A., & Vidal, B. (2014). Birefringence measurement in the terahertz range based on double Fourier analysis. Optics Letters, 39(4), 809. doi:10.1364/ol.39.000809Nagashima, T., & Hangyo, M. (2001). Measurement of complex optical constants of a highly doped Si wafer using terahertz ellipsometry. Applied Physics Letters, 79(24), 3917-3919. doi:10.1063/1.1426258Matsumoto, N., Hosokura, T., Nagashima, T., & Hangyo, M. (2011). Measurement of the dielectric constant of thin films by terahertz time-domain spectroscopic ellipsometry. Optics Letters, 36(2), 265. doi:10.1364/ol.36.000265Galuza, A. A., Kiseliov, V. K., Kolenov, I. V., Belyaeva, A. I., & Kuleshov, Y. M. (2016). Developments in THz-Range Ellipsometry: Quasi-Optical Ellipsometer. IEEE Transactions on Terahertz Science and Technology, 6(2), 183-190. doi:10.1109/tthz.2016.2525732Morris, C. M., Aguilar, R. V., Stier, A. V., & Armitage, N. P. (2012). Polarization modulation time-domain terahertz polarimetry. Optics Express, 20(11), 12303. doi:10.1364/oe.20.012303Iwata, T., Uemura, H., Mizutani, Y., & Yasui, T. (2014). Double-modulation reflection-type terahertz ellipsometer for measuring the thickness of a thin paint coating. Optics Express, 22(17), 20595. doi:10.1364/oe.22.020595Byrne, M. B., Shaukat, M. U., Cunningham, J. E., Linfield, E. H., & Davies, A. G. (2011). Simultaneous measurement of orthogonal components of polarization in a free-space propagating terahertz signal using electro-optic detection. Applied Physics Letters, 98(15), 151104. doi:10.1063/1.3579258Guo, Q., Zhang, Y., Lyu, Z., Zhang, D., Huang, Y., Meng, C., β¦ Yuan, J. (2019). THz Time-Domain Spectroscopic Ellipsometry With Simultaneous Measurements of Orthogonal Polarizations. IEEE Transactions on Terahertz Science and Technology, 9(4), 422-429. doi:10.1109/tthz.2019.2921200Pupeza, I., Wilk, R., & Koch, M. (2007). Highly accurate optical material parameter determination with THz time-domain spectroscopy. Optics Express, 15(7), 4335. doi:10.1364/oe.15.004335Grischkowsky, D., Keiding, S., van Exter, M., & Fattinger, C. (1990). Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors. Journal of the Optical Society of America B, 7(10), 2006. doi:10.1364/josab.7.002006Kim, Y., Yi, M., Kim, B. G., & Ahn, J. (2011). Investigation of THz birefringence measurement and calculation in Al_2O_3 and LiNbO_3. Applied Optics, 50(18), 2906. doi:10.1364/ao.50.002906Chen, X., Parrott, E. P. J., Huang, Z., Chan, H.-P., & Pickwell-MacPherson, E. (2018). Robust and accurate terahertz time-domain spectroscopic ellipsometry. Photonics Research, 6(8), 768. doi:10.1364/prj.6.000768Neshat, M., & Armitage, N. P. (2012). Terahertz time-domain spectroscopic ellipsometry: instrumentation and calibration. Optics Express, 20(27), 29063. doi:10.1364/oe.20.029063Van Exter, M., Fattinger, C., & Grischkowsky, D. (1989). Terahertz time-domain spectroscopy of water vapor. Optics Letters, 14(20), 1128. doi:10.1364/ol.14.00112
ΠΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠ°Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΡΡ ΡΠΏΠ»Π°Π²ΠΎΠ² Π½ΠΈΠΊΠ΅Π»ΡβΠΌΠ΅Π΄Ρ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ°Ρ ΡΠ»Π΅ΠΊΡΡΠΎΡ ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π° Π² ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΡΠ΅Π»ΠΎΡΠΈ ΠΈ ΡΠ΅Π»ΠΎΡΠ½ΠΎΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΡΡΠ°Π½ΠΎΠ»Π°
Ni93Cu and Ni82Cu (at%) alloys were synthesized by the method of combined chemical reduction of Ni(II) and Cu(II) with hydrazine hydrate. These alloys consist of crystalline phases of nickel, solid solution of copper in nickel. Determination by the βcapacitive methodβ of the electrochemically active surface area of working graphite electrodes with βcatalytic inksβ containing Ni93Cu and Ni82Cu powders showed that it is 4 and 20 % larger than for nickel powder, respectively. It was found that powder alloys Ni93Cu and Ni82Cu are applicable as catalysts for the electrochemical process of hydrogen evolution in alkaline solutions and alkaline ethanol solution. It was determined that the catalytic activity of Ni82Cu powder alloy in the process of hydrogen evolution in the alkaline ethanol solution is higher than for nickel and Ni93Cu powders. The catalytic ability of the Ni82Cu powder alloy during cycling for 25 cycles practically does not change, in contrast to Ni and Ni93Cu. Β ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ Ni(II) ΠΈ Cu(II) Π³ΠΈΠ΄ΡΠ°ΡΠΎΠΌ Π³ΠΈΠ΄ΡΠ°Π·ΠΈΠ½Π° ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Ρ ΡΠΏΠ»Π°Π²Ρ Ni93Cu ΠΈ Ni82Cu (Π°Ρ.%), ΡΠΎΡΡΠΎΡΡΠΈΠ΅ ΠΈΠ· ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ°Π· Π½ΠΈΠΊΠ΅Π»Ρ, ΡΠ²Π΅ΡΠ΄ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΠΌΠ΅Π΄ΠΈ Π² Π½ΠΈΠΊΠ΅Π»Π΅. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π΅ΠΌΠΊΠΎΡΡΠ½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΠΏΠ»ΠΎΡΠ°Π΄ΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΡΠ°Π±ΠΎΡΠΈΡ
Π³ΡΠ°ΡΠΈΡΠΎΠ²ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ΄ΠΎΠ² Ρ Β«ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠ΅ΡΠ½ΠΈΠ»Π°ΠΌΠΈΒ», ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΠΌΠΈ ΠΏΠΎΡΠΎΡΠΊΠΈ Ni93Cu ΠΈ Ni82Cu, ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ, ΡΡΠΎ ΠΎΠ½Π° Π½Π° 4 ΠΈ 20 % Π±ΠΎΠ»ΡΡΠ΅, ΡΠ΅ΠΌ Π΄Π»Ρ ΠΏΠΎΡΠΎΡΠΊΠ° Π½ΠΈΠΊΠ΅Π»Ρ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΡΠ΅ ΡΠΏΠ»Π°Π²Ρ Ni93Cu ΠΈ Ni82Cu ΠΏΡΠΈΠΌΠ΅Π½ΠΈΠΌΡ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠΎΠ² ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ° Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π° Π² ΡΠ°ΡΡΠ²ΠΎΡΠ°Ρ
ΡΠ΅Π»ΠΎΡΠ΅ΠΉ ΠΈ ΡΠ΅Π»ΠΎΡΠ½ΠΎΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΡΡΠ°Π½ΠΎΠ»Π°. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠ°Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΠΎΠ³ΠΎ ΡΠΏΠ»Π°Π²Π° Ni82Cu Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π° Π² ΡΠ΅Π»ΠΎΡΠ½ΠΎΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΡΡΠ°Π½ΠΎΠ»Π° Π²ΡΡΠ΅, ΡΠ΅ΠΌ Π΄Π»Ρ ΠΏΠΎΡΠΎΡΠΊΠΎΠ² Π½ΠΈΠΊΠ΅Π»Ρ ΠΈ Ni93Cu. ΠΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΡ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΠΎΠ³ΠΎ ΡΠΏΠ»Π°Π²Π° Ni82Cu ΠΏΡΠΈ ΡΠΈΠΊΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 25 ΡΠΈΠΊΠ»ΠΎΠ² ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π½Π΅ ΠΌΠ΅Π½ΡΠ΅ΡΡΡ Π² ΠΎΡΠ»ΠΈΡΠΈΠ΅ ΠΎΡ Ni ΠΈ Ni93Cu.
ΠΠΎΠ»ΡΡΠ΅Π½ΠΈΠ΅ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΡΡ ΡΠΏΠ»Π°Π²ΠΎΠ² ΡΠΎ ΡΡΡΡΠΊΡΡΡΠΎΠΉ ΡΠ°ΡΡΠΈΡ ΡΠ΄ΡΠΎ-ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠ° Π±Π΅Π·ΡΠ»Π΅ΠΊΡΡΠΎΠ»ΠΈΠ·Π½ΡΠΌ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ ΠΈΠ· ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ²
Methods of binary and ternary powdery alloys (Cu-Sn, Cu-Zn, Ni-Cu-Zn, Ni-Sn-Zn, Cu-Fe, Ni-Cu-Fe, Ni-Cu, Ni-Cu-Al) preparation with core-shell particles structure have been developed using the processes either of copper, nickel, tin ions cementation from solutions with tin, zinc, iron powders or nickel chemical deposition from hypophosphite solutions on the mixtures of copper and aluminum powders. Metals quota in the powdery products can be controlled by varying the duration of cementation or chemical deposition, the ratio of reagents quantities, pH and concentration of solutions. The possibility of simultaneous reduction of nickel(II) and tin(II) ions with zinc powder or copper(II) and nickel(II) ions with iron powder with the formation of ternary alloys has been revealed. Low-temperature formation of intermetallic phases in Cu-Sn, Ni-Sn-Zn systems and solid solutions in Ni-Cu-Zn, Cu-Fe, Ni-Cu-Fe systems has been shown to occur during the cementation. The particles of the initial powders (Al, Cu) are coated with loose and more or less sealed shells during nickel chemical reduction from solutions. Spherical particles, flower-type compact aggregates or dendrites, depending on the nature of metals and processes duration, are formed during the cementation. The powders obtained by cementation andchemical deposition from solutions can be used in the manufacture of products for structural and instrumental (Cu-Sn, Cu-Zn, Ni-Cu-Zn, Ni-Sn-Zn, Cu-Fe, Ni-Cu, Ni-Cu-Al), antifriction (Ni-Cu-Fe, Ni-Cu) and electrical (Ni-Cu, Ni-Cu-Zn) applications, as well as solders (Cu-Zn, Ni-Sn-Zn).Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΏΠΎΡΠΎΡΠΊΠΎΠ² Π΄Π²ΠΎΠΉΠ½ΡΡ
ΠΈ ΡΡΠΎΠΉΠ½ΡΡ
ΡΠΏΠ»Π°Π²ΠΎΠ² ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² (Cu-Sn, Cu-Zn, Ni-Cu-Zn, Ni-Sn-Zn, Cu-Fe, Ni-Cu-Fe, Ni-Cu, Ni-Cu-Al) ΡΠΎ ΡΡΡΡΠΊΡΡΡΠΎΠΉ ΡΠ°ΡΡΠΈΡ ΡΠ΄ΡΠΎ-ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠ° Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π»ΠΈΠ±ΠΎ ΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΠΎΠ³ΠΎ Π²ΡΡΠ΅ΡΠ½Π΅Π½ΠΈΡ (ΠΠ) ΠΈΠ· ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ² ΠΈΠΎΠ½ΠΎΠ² ΠΌΠ΅Π΄ΠΈ, Π½ΠΈΠΊΠ΅Π»Ρ, ΠΎΠ»ΠΎΠ²Π° ΠΏΠΎΡΠΎΡΠΊΠ°ΠΌΠΈ ΠΎΠ»ΠΎΠ²Π°, ΡΠΈΠ½ΠΊΠ°, ΠΆΠ΅Π»Π΅Π·Π°, Π»ΠΈΠ±ΠΎ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ (Π₯Π) Π½ΠΈΠΊΠ΅Π»Ρ ΠΈΠ· Π³ΠΈΠΏΠΎΡΠΎΡΡΠΈΡΠ½ΡΡ
ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ² Π½Π° ΡΠΌΠ΅ΡΠΈ ΠΏΠΎΡΠΎΡΠΊΠΎΠ² ΠΌΠ΅Π΄ΠΈ ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ. ΠΠ»Ρ ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΠΈΠ· ΠΈΠ·ΡΡΠ΅Π½Π½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ Π²ΡΡΠ²Π»Π΅Π½Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΡ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² Π² ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΡΡ
ΠΏΡΠΎΠ΄ΡΠΊΡΠ°Ρ
. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΎ, ΡΡΠΎ Π΄ΠΎΠ»Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² Π² ΠΏΠΎΡΠΎΡΠΊΠ°Ρ
ΠΌΠΎΠΆΠ½ΠΎ ΡΠ΅Π³ΡΠ»ΠΈΡΠΎΠ²Π°ΡΡ, Π²Π°ΡΡΠΈΡΡΡ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡ ΠΠ ΠΈΠ»ΠΈ Π₯Π, ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ² ΡΠ΅Π°Π³Π΅Π½ΡΠΎΠ², ΡΠ ΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ². ΠΡΡΠ²Π»Π΅Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠΎΠ²ΠΌΠ΅ΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ ΠΈΠΎΠ½ΠΎΠ² Π½ΠΈ-ΠΊΠ΅Π»Ρ(Π© ΠΈ ΠΎΠ»ΠΎΠ²Π°(Π© ΠΏΠΎΡΠΎΡΠΊΠΎΠΌ ΡΠΈΠ½ΠΊΠ° ΠΈΠ»ΠΈ ΠΌΠ΅Π΄ΠΈ(11) ΠΈ Π½ΠΈΠΊΠ΅Π»Ρ(11) ΠΏΠΎΡΠΎΡΠΊΠΎΠΌ ΠΆΠ΅Π»Π΅Π·Π° Ρ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΡΠΎΠΉΠ½ΡΡ
ΡΠΏΠ»Π°Π²ΠΎΠ². ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΏΡΠΎΡΠ΅ΠΊΠ°Π½ΠΈΠΈ ΠΠ ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ Π½ΠΈΠ·ΠΊΠΎΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠ΅ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈΠ½ΡΠ΅ΡΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ°Π· (ΡΠΈΡΡΠ΅ΠΌΡ Cu-Sn, Ni-Sn-Zn) ΠΈ ΡΠ²Π΅ΡΠ΄ΡΡ
ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ² (ΡΠΈΡΡΠ΅ΠΌΡ Ni-Cu-Zn, Cu-Fe, Ni-Cu-Fe). Π ΠΏΡΠΎΡΠ΅ΡΡΠ΅ Π₯Π Π½ΠΈΠΊΠ΅Π»Ρ ΠΈΠ· ΡΠ°ΡΡΠ²ΠΎΡΠΎΠ² ΡΠ°ΡΡΠΈΡΡ ΠΈΡΡ
ΠΎΠ΄Π½ΡΡ
ΠΏΠΎΡΠΎΡΠΊΠΎΠ² ΠΏΠΎΠΊΡΡΠ²Π°ΡΡΡΡ ΡΡΡ
Π»ΡΠΌΠΈ ΠΈΠ»ΠΈ Π±ΠΎΠ»Π΅Π΅-ΠΌΠ΅Π½Π΅Π΅ Π³Π΅ΡΠΌΠ΅ΡΠΈΡΠ½ΡΠΌΠΈ ΠΎΠ±ΠΎΠ»ΠΎΡΠΊΠ°ΠΌΠΈ. ΠΡΠΈ ΠΠ Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ ΠΏΡΠΈΡΠΎΠ΄Ρ ΠΌΠ΅ΡΠ°Π»Π»ΠΎΠ² ΠΈ Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΎΠ±ΡΠ°Π·ΡΡΡΡΡ ΡΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ°ΡΡΠΈΡΡ, ΠΊΠΎΠΌΠΏΠ°ΠΊΡΠ½ΡΠ΅ Π°Π³ΡΠ΅Π³Π°ΡΡ Π² ΡΠΎΡΠΌΠ΅ ΡΠΎΠ·Π΅ΡΠΎΠΊ ΠΈΠ»ΠΈ Π΄Π΅Π½Π΄ΡΠΈΡΡ. ΠΠΎΡΠΎΡΠΊΠΈ, ΠΏΠΎΠ»ΡΡΠ°Π΅ΠΌΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΠΠ ΠΈ Π₯Π, ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π΄Π»Ρ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΡ ΠΈΠ·Π΄Π΅Π»ΠΈΠΉ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΈ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ (Cu-Sn, Cu-Zn, Ni-Cu-Zn, Ni-Sn-Zn, Cu-Fe, Ni-Cu, Ni-Cu-Al), Π°Π½ΡΠΈΡΡΠΈΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ (Ni-Cu-Fe, Ni-Cu) ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ (Ni-Cu, Ni-Cu-Zn) Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ²Π΅ΡΠ΄ΡΡ
ΠΏΡΠΈΠΏΠΎΠ΅Π² (Cu-Zn, Ni-Sn-Zn)
Time Characteristics of an Electromagnetic Pulse in a Homogeneous Absorbing Diffusion Medium*
Synthesis of optimal multilayer periodic systems: multicriterial approach and realization of synthesized system
A novel effective approach to formulation and solving of a multilayer system synthesis problem has been developed. The main characteristics of the system spectrum are used as quality criteria to formulate the multicriteria optimization problem. The preliminary analysis of a specific system has been shown to simplify the optimization procedure essentially and to obtain a unique solution of the problem. A set of examples illustates the efficiency of the developed approach. Physical reasons for deviations of experimentally realized system from the synthesized one have been formulated