55 research outputs found
Ohmic and space-sΠ½arge limited conductivity Ρn dihydrodibenzotetraaza[14]annulene thin films
The electrophysical properties of thermally deposited thin films of dihydrodibenzotetraaza[14]-annulene were investigated applying ohmic gold electrodes to them. The volt-ampere characteristic of planar thin films symmetric structure Au β dihydrodibenzotetraaza[14]annulene β Au under dark condition was measured. The direct current conductivity in this structure at room temperature and at a small applied voltage was ohmic, carried out by thermally generated carriers, and the conductivity, limited by space charges carried out by the injected carriers, was observed at a higher applied voltage. The transition from ohmic conductivity to conductivity limited by space charges occurred at an electric field strength in a thin film of Π ~ 4 Γ 10β΄ V/m.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π»ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΈ Π½Π°Π½Π΅ΡΠ΅Π½Π½ΡΡ
ΡΠΎΠ½ΠΊΠΈΡ
ΠΏΠ»Π΅Π½ΠΎΠΊ Π΄ΠΈΠ³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ±Π΅Π½Π·ΠΎΡΠ΅ΡΡΠ°Π°Π·Π°[14]Π°Π½Π½ΡΠ»Π΅Π½Π° Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π·ΠΎΠ»ΠΎΡΡΡ
ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΊΠΎΠ½ΡΠ°ΠΊΡΠΎΠ² ΠΊ Π½ΠΈΠΌ. ΠΠ·ΠΌΠ΅ΡΡΠ»ΠΈ ΡΠ΅ΠΌΠ½ΠΎΠ²ΡΡ Π²ΠΎΠ»ΡΡ-Π°ΠΌΠΏΠ΅ΡΠ½ΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΡ ΠΏΠ»Π°Π½Π°ΡΠ½ΠΎΠΉ ΡΠΎΠ½ΠΊΠΎΠΏΠ»Π΅Π½ΠΎΡΠ½ΠΎΠΉ ΡΡΡΡΠΊΡΡΡΡ Au β Π΄ΠΈΠ³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ±Π΅Π½Π·ΠΎΡΠ΅ΡΡΠ°Π°Π·Π°[ 14]Π°Π½Π½ΡΠ»Π΅Π½ β Au. ΠΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ Π² ΡΡΠΎΠΉ ΡΡΡΡΠΊΡΡΡΠ΅ Π½Π° ΠΏΠΎΡΡΠΎΡΠ½Π½ΠΎΠΌ ΡΠΎΠΊΠ΅ ΠΏΡΠΈ ΠΊΠΎΠΌΠ½Π°ΡΠ½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΠΈ ΠΏΡΠΈ Π½Π΅Π±ΠΎΠ»ΡΡΠΎΠΌ ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΠΌ Π½Π°ΠΏΡΡΠΆΠ΅Π½ΠΈΠΈ Π±ΡΠ»Π° ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ, ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΠ΅ΠΌΠΎΠΉ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΈ Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½ΠΎΡΠΈΡΠ΅Π»ΡΠΌΠΈ, Π° ΠΏΡΠΈ Π±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΎΠΌ ΠΏΡΠΈΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΠΌ Π½Π°ΠΏΡΡΠΆΠ΅Π½ΠΈΠΈ Π½Π°Π±Π»ΡΠ΄Π°Π»Π°ΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ, ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Π½Π°Ρ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΡΠΌΠΈ Π·Π°ΡΡΠ΄Π°ΠΌΠΈ, ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΠ΅ΠΌΠ°Ρ ΠΈΠ½ΠΆΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌΠΈ Π½ΠΎΡΠΈΡΠ΅Π»ΡΠΌΠΈ. ΠΠ΅ΡΠ΅Ρ
ΠΎΠ΄ ΠΎΡ ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΠΊ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ, ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½Π½ΠΎΠΉ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅Π½Π½ΡΠΌΠΈ Π·Π°ΡΡΠ΄Π°ΠΌΠΈ, ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΠ» ΠΏΡΠΈ Π½Π°ΠΏΡΡΠΆΠ΅Π½Π½ΠΎΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π² ΡΠΎΠ½ΠΊΠΎΠΉ ΠΏΠ»Π΅Π½ΠΊΠ΅ Π ~ 4 Γ 10β΄ Π/ΠΌ.ΠΠΎΡΠ»ΡΠ΄ΠΆΡΠ²Π°Π»ΠΈ Π΅Π»Π΅ΠΊΡΡΠΎΡΡΠ·ΠΈΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ Π½Π°Π½Π΅ΡΠ΅Π½ΠΈΡ
ΡΠ΅ΡΠΌΡΡΠ½ΠΈΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ½ΠΊΠΈΡ
ΠΏΠ»ΡΠ²ΠΎΠΊ Π΄ΠΈΠ³ΡΠ΄ΡΠΎΠ΄ΠΈΠ±Π΅Π½Π·ΠΎΡΠ΅ΡΡΠ°Π°Π·Π°[14]Π°Π½ΡΠ»Π΅Π½Ρ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ Π·ΠΎΠ»ΠΎΡΠΈΡ
ΠΎΠΌΡΡΠ½ΠΈΡ
ΠΊΠΎΠ½ΡΠ°ΠΊΡΡΠ² Π΄ΠΎ Π½ΠΈΡ
. ΠΠΈΠΌΡΡΡΠ²Π°Π»ΠΈ ΡΠ΅ΠΌΠ½ΠΎΠ²Ρ Π²ΠΎΠ»ΡΡ-Π°ΠΌΠΏΠ΅ΡΠ½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΡ ΠΏΠ»Π°Π½Π°ΡΠ½ΠΎΡ ΡΠΎΠ½ΠΊΠΎΠΏΠ»ΡΠ²ΠΊΠΎΠ²ΠΎΡ ΡΡΡΡΠΊΡΡΡΠΈ Au β Π΄ΠΈΠ³ΡΠ΄ΡΠΎΠ΄ΠΈΠ±Π΅Π½Π·ΠΎΡΠ΅ΡΡΠ°Π°Π·Π°[14]Π°Π½ΡΠ»Π΅Π½ β Au. ΠΡΠΎΠ²ΡΠ΄Π½ΡΡΡΡ Π² ΡΡΠΉ ΡΡΡΡΠΊΡΡΡΡ Π½Π° ΠΏΠΎΡΡΡΠΉΠ½ΠΎΠΌΡ ΡΡΡΡΠΌΡ ΠΏΡΠΈ ΠΊΡΠΌΠ½Π°ΡΠ½ΡΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ Ρ Π½Π΅Π²Π΅Π»ΠΈΠΊΡΠΉ ΠΏΡΠΈΠΊΠ»Π°Π΄Π΅Π½ΡΠΉ Π½Π°ΠΏΡΡΠ·Ρ Π±ΡΠ»Π° ΠΎΠΌΡΡΠ½ΠΎΡ, ΡΠΎ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΠ²Π°Π»Π°ΡΡ ΡΠ΅ΡΠΌΡΡΠ½ΠΎ Π³Π΅Π½Π΅ΡΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½ΠΎΡΡΡΠΌΠΈ, Π° ΠΏΡΠΈ Π±ΡΠ»ΡΡ Π²ΠΈΡΠΎΠΊΡΠΉ ΠΏΡΠΈΠΊΠ»Π°Π΄Π΅Π½ΡΠΉ Π½Π°ΠΏΡΡΠ·Ρ ΡΠΏΠΎΡΡΠ΅ΡΡΠ³Π°Π»ΠΈ ΠΏΡΠΎΠ²ΡΠ΄Π½ΡΡΡΡ, ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½Ρ ΠΏΡΠΎΡΡΠΎΡΠΎΠ²ΠΈΠΌΠΈ Π·Π°ΡΡΠ΄Π°ΠΌΠΈ, ΡΠΎ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΠ²Π°Π»Π°ΡΡ ΡΠ½ΠΆΠ΅ΠΊΡΠΎΠ²Π°Π½ΠΈΠΌΠΈ Π½ΠΎΡΡΡΠΌΠΈ. ΠΠ΅ΡΠ΅Ρ
ΡΠ΄ Π²ΡΠ΄ ΠΎΠΌΡΡΠ½ΠΎΡ ΠΏΡΠΎΠ²ΡΠ΄Π½ΠΎΡΡΡ Π΄ΠΎ ΠΏΡΠΎΠ²ΡΠ΄Π½ΠΎΡΡΡ, ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½ΠΎΡ ΠΏΡΠΎΡΡΠΎΡΠΎΠ²ΠΈΠΌΠΈ Π·Π°ΡΡΠ΄Π°ΠΌΠΈ, Π²ΡΠ΄Π±ΡΠ²Π°Π²ΡΡ ΠΏΡΠΈ Π½Π°ΠΏΡΡΠΆΠ΅Π½ΠΎΡΡΡ Π΅Π»Π΅ΠΊΡΡΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ Π² ΠΏΠ»ΡΠ²ΡΡ Π ~ 4 Γ 10β΄ Π/ΠΌ
In-situ bioconjugation in stationary media and in liquid flow byΒ femtosecond laser ablation
Soft X-ray lasing with lithium ions ?
There are several experimental reports claiming to have demonstrated amplification and lasing at 13.5 nm on the Lymanβ[MATH] transition in Li2+ ions produced by optical field ionization (OFI) of a preformed Li-plasma. We have systematically studied properties of Li-OFI-plasmas by recording simultaneously the time dependent XUV line emission and scattered femtosecond laser signals. Our investigations demonstrate that in the Li vapor (plasma) produced by nanosecond pulse laser ablation of a solid target clusters and microparticles are present that strongly influence the XUV emission. These observations raise doubts on the interpretation of so far reported results on the feasibility of the Lymanβ[MATH] Li laser
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