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wxcokok

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waiy2001(½ð±Ò+3,VIP+0): 3-14 20:23
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¡¾ÎÄÏ×ÌâÄ¿¡¿Nonlinear optical, poly(amide-imide)¨Cclay nanocomposites comprising an azobenzene moiety synthesised via sequential self-repetitive reaction

¡¾ÆÚ¿¯À´Ô´¡¿Dyes and Pigments,
¡¾×÷Õß¡¿Hsun-Lien Lin, Huey-Ling Chang, Tzong-Yuan Juang, Rong-Ho Lee, Shenghong A. Dai, Ying-Ling Liu, Ru-Jong Jeng
¡¾·¢±íʱ¼ä¡¿2009
¡¾ÄÚÈݼò½é¡¿
Poly(N-acylurea)¨Cclay nanocomposites consisting of a modified montmorillonite and poly(N-acylurea) were prepared from which poly(amide-imide)¨Cclay nanocomposites were subsequently obtained via the sequential self-repetitive reaction of poly(N-acylurea). The moderate Tg of poly(N-acylurea) allows the nonlinear optically active polymer to exhibit high poling efficiency; in situ poling and curing increased the Tgs of poly(amide-imide)¨Cclay nanocomposites. Electro-optical coefficients, r33 of 17¨C20 pm/V (830 nm), were achieved; high temporal stability (120 ¡ãC) and waveguide optical losses of 3.4¨C3.9 dB/cm at 1310 nm were also obtained for poly(amide-imide)¨Cclay nanocomposites.
31Â¥2009-03-13 19:49:55
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handsomeland

½ð³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï
waiy2001(½ð±Ò+3,VIP+0): 3-14 20:23
¡¾Ñ§¿ÆÁìÓò¡¿¼ÆËã²ÄÁÏ
¡¾ÎÄÏ×ÌâÄ¿¡¿A complet representation of structure-property relationships in crystals
¡¾ÆÚ¿¯À´Ô´¡¿Nat. Mater., 7, 455-8 (2008)
¡¾×÷Õß»ò¿ÎÌâ×é¡¿A. Van DE Walle, Calif. Inst. Tech., USA
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½éºÍÌå»á¡¿
ÍÅ´ØÕ¹¿ªµÄ¼ÆËã²ßÂÔÓÃÀ´Ä£Äâ²ôÔÓ²ÄÁϵıê¶ÈÐÔÄܷdz£³É¹¦£¬±¾ÎĽ«ÍÅ´ØÕ¹¿ªÀíÂÛÍØÕ¹³ÉÕÅÁ¿ÍÅ´ØÕ¹¿ªPCEÓÐÍûÓÃÀ´Ä£ÄâÉè¼Æ¸÷ÏòÒìÐԵ硢¹â¡¢´ÅÐÔÄÜ£»

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http://www.physik.uni-augsburg.de/~lujun/temp/M1.pdf
http://www.instrument.com.cn/ilog/handsomeland/
32Â¥2009-03-14 00:34:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

handsomeland

½ð³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï
waiy2001(½ð±Ò+3,VIP+0): 3-14 20:23
¡¾Ñ§¿ÆÁìÓò¡¿ÄÉÃ×
¡¾ÎÄÏ×ÌâÄ¿¡¿An atomic-resolution nanomechanical mass sensor
¡¾ÆÚ¿¯À´Ô´¡¿Nat. Nanotech., 3, 533-7(2008)
¡¾×÷Õß»ò¿ÎÌâ×é¡¿K. Jensen, Kwanpyo Kim and A. Zettl, Univ. California USA
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½éºÍÌå»á¡¿
08Äê9Ô·Ý×ÔÈ»ÄÉÃ׵ķâÃæÎÄÕÂ-ÄÉÃ׳ƵÄÑо¿£¬Éù³Æ¿ÉÒÔ×öµ½µ¥¸ö½ðÔ­×ӵIJâÁ¿¾«¶È£»
±¾ÈËÒÔΪÎÄÕ¼°surplementÖеÄʵÑéÊý¾ÝûÓгöÏÖԭʼµÄƵÆ×Êý¾Ý£¬ÈËΪÒòËØÄÑÒÔÔ¤¼Æ£»ÁíÍâÉ䯵²âÁ¿¹ý³ÌÖпÉÄÜ»áÊܵ½½ðÔ­×Ó³Á»ý¹ý³ÌÖÐÒòΪ΢²¨ÔÚÇ»±Ú·´ÉäÂʱ仯ÒýÆð¡°¹²Õñ¡±µÄÒÆ¶¯¡£¼´£¬´ÓʵÑéÊý¾ÝÉÏ¿´²»µ½"¹²Õñ"£¬"¹²Õñ"Ô´ÓÚÄÉÃ×ÏßÖÊÁ¿±ä»¯µÄ½áÂÛ¸üÊÇÐéÎÞÆ®Ãì¡£²»¹ýÖÊÒɹéÖÊÒÉ£¬ÕâÖ»ÊǸöÈ˹۵㡣

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http://www.physik.uni-augsburg.de/~lujun/temp/M2.pdf
http://www.instrument.com.cn/ilog/handsomeland/
33Â¥2009-03-14 00:40:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

handsomeland

½ð³æ (ÕýʽдÊÖ)

¡ï ¡ï ¡ï
waiy2001(½ð±Ò+3,VIP+0): 3-14 20:22
¡¾Ñ§¿ÆÁìÓò¡¿ÊµÑéÎïÀí
¡¾ÎÄÏ×ÌâÄ¿¡¿Tunable narrowband terahertz emission from mastered laser-electron beam interaction
¡¾ÆÚ¿¯À´Ô´¡¿Nat. Phys., 4, 390-3(2008)
¡¾×÷Õß»ò¿ÎÌâ×é¡¿S. Bielawski, C. Evain, T. Hara, M. Hosaka, M. Katoh, S. Kimura, A. Mochihashi, M. Shimada, C. Szwaj, T. Takahashi and Y. Takashima, Nat. Inst. Nat. Sci, Japan
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½éºÍÌå»á¡¿
0.1-1THzµÄ¹âÔ´Á¬Ðø²úÉúÔ­ÀíºÍʵÏÖ£»

Download:
http://www.physik.uni-augsburg.de/~lujun/temp/M3.pdf
http://www.instrument.com.cn/ilog/handsomeland/
34Â¥2009-03-14 00:44:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

x_f_wang

Í­³æ (СÓÐÃûÆø)

¡ï ¡ï ¡ï ¡ï
warlen(½ð±Ò+4,VIP+0):лл·ÖÏí 3-18 10:10
¡¾Ñ§¿ÆÁìÓò¡¿²ÄÁÏÎïÀí
¡¾ÎÄÏ×ÌâÄ¿¡¿Characterization of the High-Pressure Structural Transition and Thermodynamic Properties in Sodium Chloride: A Computational Investigation on the Basis of the Density
Functional Theory
¡¾ÆÚ¿¯À´Ô´¡¿J. Phys. Chem. B  2008, 112, 13898¨C13905
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Cheng Lu, Xiao-Yu Kuang, and Qin-Sheng Zhu
¡¾·¢±íʱ¼ä¡¿August 24, 2008
¡¾ÄÚÈݼò½é¡¿Using first-principles calculations, the elastic constants, the thermodynamic properties, and the structural phase
transition between the B1 (rocksalt) and the B2 (cesium chloride) phases of NaCl are investigated by means
of the pseudopotential plane-waves method. The calculations are performed within the generalized gradient
approximation to density functional theory with the Perdew-Burke-Ernzerhof exchange-correlation functional.
On the basis of the third-order Birch-Murnaghan equation of states, the transition pressure Pt between the
B1 phase and the B2 phase of NaCl is determined. The calculated values are generally speaking in good
agreement with experiments and with similar theoretical calculations. From the theoretical calculations, the
shear modulus, Young¡¯s modulus, rigidity modulus, and Poisson¡¯s ratio of NaCl are derived. According to
the quasi-harmonic Debye model, we estimated the Debye temperature of NaCl from the average sound
velocity. Moreover, the pressure derivatives of elastic constants, ∂C11/∂P, ∂C12/∂P, ∂C44/∂P, ∂S11/∂P, ∂S12/∂P,
and ∂S44/∂P, for NaCl crystal are investigated for the first time. This is a quantitative theoretical prediction
of the elastic and thermodynamic properties of NaCl, and it still awaits experimental confirmation.
¡¾Ìå»á&ÊÕ»ñ¡¿·¢J. Phys. Chem. BÒ²²»ÊÇÌ«ÄÑÒ®£¡ºÙºÙºÙ
35Â¥2009-03-17 15:19:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jiayun1980

½ð³æ (³õÈëÎÄ̳)

ÎÄÏ×

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36Â¥2009-04-02 10:26:59
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