13 research outputs found

    Laser-induced Interaction of Multilevel Quantum Dots

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    A theoretical model is developed for describing the laser-induced interaction of a pair of multilevel semi- conductor quantum dots. Spectral dependencies of interaction energy are calculated in dipole-dipole ap- proximation for a pair of CdSe quantum dots in a quasi-resonant laser field, for cases of two identical quantum dots and those with differing transition wavelengths. Interaction energy of pair of multilevel quantum dots in the long-wavelength potential well is much higher than that of pair of two-level quan- tum dots. The increase of difference of resonance wavelengths of two interacting quantum dots leads to decrease of the potential well depth

    Laser-induced Interaction of Multilevel Quantum Dots

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    A theoretical model is developed for describing the laser-induced interaction of a pair of multilevel semi- conductor quantum dots. Spectral dependencies of interaction energy are calculated in dipole-dipole ap- proximation for a pair of CdSe quantum dots in a quasi-resonant laser field, for cases of two identical quantum dots and those with differing transition wavelengths. Interaction energy of pair of multilevel quantum dots in the long-wavelength potential well is much higher than that of pair of two-level quan- tum dots. The increase of difference of resonance wavelengths of two interacting quantum dots leads to decrease of the potential well depth

    Бамоорганизация наночастиц, контролируСмая рСзонансным Π»Π°Π·Π΅Ρ€Π½Ρ‹ΠΌ ΠΏΠΎΠ»Π΅ΠΌ

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    The paper presents theoretical justification for the possibility of formation of nanoparticle structures with the predefined configuration. The process of formation is the self-organized aggregation of nanoparticles under the action of external resonant laser field. The formation of various nanostructures that contain metallic and semiconducting nanoparticles with resonances in the visible spectrum is considered in the dipole-dipole approximationВСорСтичСски ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ формирования структур ΠΈΠ· наночастиц с Π·Π°Ρ€Π°Π½Π΅Π΅ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΠΊΠΎΠ½Ρ„ΠΈΠ³ΡƒΡ€Π°Ρ†ΠΈΠ΅ΠΉ. Π­Ρ‚ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ благодаря явлСнию самоорганизации наночастиц ΠΏΠΎΠ΄ дСйствиСм внСшнСго рСзонансного поля Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ излучСния. Π€ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… наноструктур, содСр- ΠΆΠ°Ρ‰ΠΈΡ… мСталличСскиС ΠΈ ΠΏΠΎΠ»ΡƒΠΏΡ€ΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²Ρ‹Π΅ наночастицы с рСзонансной Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ Π² Π²ΠΈΠ΄ΠΈΠΌΠΎΠΉ области, ΡΡ‡ΠΈΡ‚Π°Π»ΠΎΡΡŒ Π² диполь-дипольном ΠΏΡ€ΠΈΠ±Π»ΠΈΠΆΠ΅Π½ΠΈ

    Бамосборка структур, состоящих ΠΈΠ· Ρ‚Ρ€Π΅Ρ… наночастиц, с Π·Π°Ρ€Π°Π½Π΅Π΅ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠ΅ΠΉ ΠΏΠΎΠ΄ дСйствиСм квазирСзонансного Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ излучСния

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    In the paper a dynamic model of self-assembly of nanoparticles under laser field is proposed for research the possibility of a step-by-step assembly of a structure consisting of three particles with different form. The possibility of forming such structures with a predetermined geometry from a preformed pair of par- ticles is consideredΠ’ Ρ€Π°ΠΌΠΊΠ°Ρ… Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° динамичСская модСль самосборки наночастиц Π² ΠΏΠΎΠ»Π΅ Π»Π°Π·Π΅Ρ€- Π½ΠΎΠ³ΠΎ излучСния с Ρ†Π΅Π»ΡŒΡŽ исслСдования возмоТности поэтапной сборки структуры, состоящСй ΠΈΠ· Ρ‚Ρ€Π΅Ρ… частиц, с Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠΉ Ρ„ΠΎΡ€ΠΌΠΎΠΉ. РассмотрСн процСсс формирования Ρ‚Π°ΠΊΠΈΡ… структур с Π·Π°Π΄Π°Π½Π½ΠΎΠΉ Π³Π΅ΠΎΠΌΠ΅Ρ‚Ρ€ΠΈΠ΅ΠΉ Π² Π²Π°Ρ€ΠΈΠ°Π½Ρ‚Π΅ присоСдинСния ΠΊ Π·Π°Ρ€Π°Π½Π΅Π΅ сформированной ΠΏΠ°Ρ€Π΅ частиц Ρ‚Ρ€Π΅Ρ‚ΡŒΠ΅ΠΉ частиц

    Бамоорганизация наночастиц, контролируСмая рСзонансным Π»Π°Π·Π΅Ρ€Π½Ρ‹ΠΌ ΠΏΠΎΠ»Π΅ΠΌ

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    The paper presents theoretical justification for the possibility of formation of nanoparticle structures with the predefined configuration. The process of formation is the self-organized aggregation of nanoparticles under the action of external resonant laser field. The formation of various nanostructures that contain metallic and semiconducting nanoparticles with resonances in the visible spectrum is considered in the dipole-dipole approximationВСорСтичСски ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ формирования структур ΠΈΠ· наночастиц с Π·Π°Ρ€Π°Π½Π΅Π΅ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΠΊΠΎΠ½Ρ„ΠΈΠ³ΡƒΡ€Π°Ρ†ΠΈΠ΅ΠΉ. Π­Ρ‚ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎ благодаря явлСнию самоорганизации наночастиц ΠΏΠΎΠ΄ дСйствиСм внСшнСго рСзонансного поля Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ излучСния. Π€ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… наноструктур, содСр- ΠΆΠ°Ρ‰ΠΈΡ… мСталличСскиС ΠΈ ΠΏΠΎΠ»ΡƒΠΏΡ€ΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠΎΠ²Ρ‹Π΅ наночастицы с рСзонансной Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ‹ Π² Π²ΠΈΠ΄ΠΈΠΌΠΎΠΉ области, ΡΡ‡ΠΈΡ‚Π°Π»ΠΎΡΡŒ Π² диполь-дипольном ΠΏΡ€ΠΈΠ±Π»ΠΈΠΆΠ΅Π½ΠΈ

    ΠœΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠΉ систСмы Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ зондрования для обнаруТСния Π½ΠΈΠ·ΠΊΠΈΡ… ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΉ ΠΌΠ΅Ρ‚Π°Π½Π° Π² ΠΏΡ€ΠΈΠ·Π΅ΠΌΠ½ΠΎΠΌ слоС

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    The relevance of research is due to the need for remote monitoring of the atmosphere for the presence of suspended matter. The application of this method for exploration in geo-prospecting will make it possible to identify areas with an increased content of suspended solids in the atmosphere, which will make it possible to record local outputs of natural gas, as well as observe the spatial dynamics of surface leaks in real time, carry out topographic referencing of prospective fields, etc. In addition, detection leaks and increased concentration of methane will allow early implementation of a set of measures aimed at preventing environmental disastersΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ исслСдований обусловлСна Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎΡΡ‚ΡŒΡŽ дистанционного ΠΌΠΎΠ½ΠΈΡ‚ΠΎΡ€ΠΈΠ½Π³Π° атмосфСры Π½Π° Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ Π²Π·Π²Π΅ΡˆΠ΅Π½Π½Ρ‹Ρ… вСщСств. ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ этого ΠΌΠ΅Ρ‚ΠΎΠ΄Π° Π³Π΅ΠΎΠ»ΠΎΠ³ΠΎΡ€Π°Π·Π²Π΅Π΄ΠΎΡ‡Π½Ρ‹Ρ… Ρ€Π°Π±ΠΎΡ‚ ΠΏΡ€ΠΈ Π³Π΅ΠΎΠ»ΠΎΠ³ΠΎΡ€Π°Π·Π²Π΅Π΄ΠΊΠ΅ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚ Π²Ρ‹ΡΠ²ΠΈΡ‚ΡŒ участки с ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½Ρ‹ΠΌ содСрТаниСм Π²Π·Π²Π΅ΡˆΠ΅Π½Π½Ρ‹Ρ… вСщСств Π² атмосфСрС, даст Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ Ρ€Π΅Π³ΠΈΡΡ‚Ρ€ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π»ΠΎΠΊΠ°Π»ΡŒΠ½Ρ‹Π΅ Π²Ρ‹Ρ…ΠΎΠ΄Ρ‹ ΠΏΡ€ΠΈΡ€ΠΎΠ΄Π½ΠΎΠ³ΠΎ Π³Π°Π·Π°, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π½Π°Π±Π»ΡŽΠ΄Π°Ρ‚ΡŒ ΠΏΡ€ΠΎΡΡ‚Ρ€Π°Π½ΡΡ‚Π²Π΅Π½Π½ΡƒΡŽ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΡƒ повСрхностных ΡƒΡ‚Π΅Ρ‡Π΅ΠΊ Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ, ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΡ‚ΡŒ Ρ‚ΠΎΠΏΠΎΠ³Ρ€Π°Ρ„ΠΈΡ‡Π΅ΡΠΊΡƒΡŽ привязку пСрспСктивных мСстороТдСний ΠΈ Ρ‚.Π΄. ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΈΠ΅ ΡƒΡ‚Π΅Ρ‡Π΅ΠΊ ΠΈ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½Π½ΠΎΠΉ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ†ΠΈΠΈ ΠΌΠ΅Ρ‚Π°Π½Π° ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚ Π·Π°Π±Π»Π°Π³ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎ Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Ρ‚ΡŒ комплСкс мСроприятий, Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½Π½Ρ‹Ρ… Π½Π° ΠΏΡ€Π΅Π΄ΠΎΡ‚Π²Ρ€Π°Ρ‰Π΅Π½ΠΈΠ΅ экологичСских катастро
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