Optically manipulated nanomechanics of semiconductor nanowires
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摘要
Opto–electromechanical coupling at the nanoscale is an important topic in new scientific studies and technical applications. In this work, the optically manipulated electromechanical behaviors of individual cadmium sulfide(CdS) nanowires are investigated by a customer-built optical holder inside transmission electron microscope, wherein in situ electromechanical resonance took place in conjunction with photo excitation. It is found that the natural resonance frequency of the nanowire under illumination becomes considerably lower than that under darkness. This redshift effect is closely related to the wavelength of the applied light and the diameter of the nanowires. Density functional theory(DFT) calculation shows that the photoexcitation leads to the softening of CdS nanowires and thus the redshift of natural frequency, which is in agreement with the experimental results.
Opto–electromechanical coupling at the nanoscale is an important topic in new scientific studies and technical applications. In this work, the optically manipulated electromechanical behaviors of individual cadmium sulfide(CdS) nanowires are investigated by a customer-built optical holder inside transmission electron microscope, wherein in situ electromechanical resonance took place in conjunction with photo excitation. It is found that the natural resonance frequency of the nanowire under illumination becomes considerably lower than that under darkness. This redshift effect is closely related to the wavelength of the applied light and the diameter of the nanowires. Density functional theory(DFT) calculation shows that the photoexcitation leads to the softening of CdS nanowires and thus the redshift of natural frequency, which is in agreement with the experimental results.
Opto–electromechanical coupling at the nanoscale is an important topic in new scientific studies and technical applications. In this work, the optically manipulated electromechanical behaviors of individual cadmium sulfide(CdS) nanowires are investigated by a customer-built optical holder inside transmission electron microscope, wherein in situ electromechanical resonance took place in conjunction with photo excitation. It is found that the natural resonance frequency of the nanowire under illumination becomes considerably lower than that under darkness. This redshift effect is closely related to the wavelength of the applied light and the diameter of the nanowires. Density functional theory(DFT) calculation shows that the photoexcitation leads to the softening of CdS nanowires and thus the redshift of natural frequency, which is in agreement with the experimental results.
引文
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[3]Gao R,Wang Z L,Bai Z,de Heer W A,Dai L and Gao M 2000 Phys.Rev.Lett.85 622
[4]Masmanidis S C,Karabalin R B,De Vlaminck I,Borghs G,Freeman M R and Roukes M L 2007 Science 317 780
[5]Feng X L,He R,Yang P and Roukes M L 2007 Nano Lett.7 1953
[6]Feng X L,White C J,Hajimiri A and Roukes M L 2008 Nat.Nanotechnol.3 342
[7]Kozinsky I,Postma H W C,Bargatin I and Roukes M L 2006 Appl.Phys.Lett.88 253101
[8]Pickering E,Bo A,Zhan H,Liao X,Tan H H and Gu Y 2018 Nanoscale10 2588
[9]Purcell S T,Vincent P,Journet C and Binh V T 2002 Phys.Rev.Lett.89 276103
[10]Dohn S,Svendsen W,Boisen A and Hansen O 2007 Rev.Sci.Instrum.78 103303
[11]Jensen K,Kim K and Zettl A 2008 Nat.Nanotechnol.3 533
[12]Okamoto H,Ito D,Onomitsu K and Yamaguchi H 2008 Phys.Status Solidi C 5 2920
[13]Lobato-Dauzier N,Denoual M,Sato T,Tachikawa S,Jalabert L and Fujita H 2019 Ultramicroscopy 197 100
[14]Roy A,Ju S,Wang S and Huang H 2019 Nanotechnology 30 065705
[15]Wang Z L and Song J 2006 Science 312 242
[16]Lin Y,Song J,Ding Y,Lu S and Wang Z L 2008 Adv.Mater.20 3127
[17]Wolf B,Meyer D,Belger A and Paufler P 2002 Philos.Mag.A 82 1865
[18]Teng F,Hu K,Ouyang W and Fang X 2018 Adv.Mater.30 1706262
[19]Das S,Hossain M J,Leung S F,Lenox A,Jung Y,Davis K,He J H and Roy T 2019 Nano Energy 58 47
[20]Favero I,Stapfner S,Hunger D,Paulitschke P,Reichel J,Lorenz H,Weig E M and Karrai K 2009 Opt.Express 17 12813
[21]Stapfner S,Ost L,Hunger D,Reichel J,Favero I and Weig E M 2013Appl.Phys.Lett.102 151910
[22]Liu Y L,Wang C,Zhang J and Liu Y X 2018 Chin.Phys.B 27 024204
[23]Stapfner S,Favero I,Hunger D,Paulitschke P,Reichel J,Karrai K and Weig E M 2010 SPIE Photonics Europe,April 12-16,2010 Brussels,Belgium,Vol.7727,p.772706
[24]Favero I and Karrai K 2008 New J.Phys.10 95006
[25]Jiang C,Cui Y S,Liu H X,Li X W and Bin G 2015 Chin.Phys.B 24054206
[26]Qin L G,Wang Z Y,Ma H Y,Wang S M and Gong S Q 2017 Chin.Phys.B 26 128502
[27]Zhao M H,Ye Z Z and Mao S X 2009 Phys.Rev.Lett.102 45502
[28]Zheng X J,Yu G C,Chen Y Q,Mao S X and Zhang T 2010 J.Appl.Phys.108 94305
[29]Pan A,Liu R,Yang Q,Zhu Y,Yang G,Zou B and Chen K 2005 J.Phys.Chem.B 109 24268
[30]Jin C H,Wang J Y,Chen Q and Peng L M 2006 J.Phys.Chem.B 1105423
[31]Gao P,Liu K,Liu L,Wang Z,Liao Z,Xu Z,Wang W,Bai X,Wang Eand Li Y 2010 J.Electron Microsc.59 285
[32]Meirovitch L 1986 Elements of Vibration Analysis(2nd edn.)(New York:McGraw-Hill)pp.204-227
[33]Chen C Q,Shi Y,Zhang Y S,Zhu J and Yan Y J 2006 Phys.Rev.Lett.96 75505
[34]Wang L,Tian X,Yang S,Xu Z,Wang W and Bai X 2012 Appl.Phys.Lett.100 163110
[35]Adachi S 2005 Properties of Group-IV,III-V and II-VI Semiconductors(Chichester:John Wiley&Sons)pp.41-62
[36]Calarco R,Marso M,Richter T,Aykanat A I,Meijers R,Hart A V D,Stoica T and Lüth H 2005 Nano Lett.5 981