Quantum confinement effect of nanocrystalline GaN films prepared by pulsed-laser ablation under various Ar pressures

2005 ◽  
Vol 471 (1-2) ◽  
pp. 273-276 ◽  
Author(s):  
Jong-Won Yoon ◽  
Takeshi Sasaki ◽  
Cheong Hyun Roh ◽  
Seung Hwan Shim ◽  
Kwang Bo Shim ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Confinement Effect

Quantum Confinement Effect of Amorphous GaN Quantum Dots Prepared by Pulsed-Laser Ablation

2005 ◽  
Vol 44 (1B) ◽  
pp. 788-791 ◽  
Author(s):  
Jong-Won Yoon ◽  
Seung Hwan Shim ◽  
Kwang Bo Shim ◽  
Naoto Koshizaki ◽  
Young-Soo Kwon
Keyword(s):  
Quantum Dots ◽  
Laser Ablation ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Confinement Effect

Quantum Confinement of GaAs Nanocrystals Deposited on PMMA Microspheres Using Pulsed Laser Ablation

2013 ◽  
Vol 660 ◽  
pp. 3-9
Author(s):  
Jeong Ho Ryu ◽  
Soon Yong Kweon ◽  
Jung Il Lee ◽  
Sung Lim Ryu
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser Deposition ◽  
Quantum Confinement ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Average Diameter ◽  
Laser Deposition ◽  
Spherical Particles ◽  
Novel Approach

A modified pulsed laser deposition (PLD) was employed to deposit GaAs nanocrystals on the surface of PMMA microspheres. This novel approach is distinguished by the fact that laser ablated materials are deposited uniformly onto the surface of spherical particles that are held constantly in a particle fludization unit. The XRD, SEM, EDX, TEM, EDP and PL results confirmed that cubic structured GaAs nanocrystals were deposited uniformly on the surface of PMMA microspheres with an average diameter of about 15 nm.

Quantum confinement effect in ZnO thin films grown by pulsed laser deposition

2008 ◽  
Vol 93 (17) ◽  
pp. 173104 ◽  
Author(s):  
J. C. Nie ◽  
J. Y. Yang ◽  
Y. Piao ◽  
H. Li ◽  
Y. Sun ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Pulsed Laser ◽  
Confinement Effect ◽  
Laser Deposition ◽  
Zno Thin Films

Fluorescent carbon nano dots from lignite: unveiling the impeccable evidence for quantum confinement

2016 ◽  
Vol 18 (17) ◽  
pp. 12065-12073 ◽  
Author(s):  
Senthil Kumar Thiyagarajan ◽  
Suresh Raghupathy ◽  
Dharmalingam Palanivel ◽  
Kaviyarasan Raji ◽  
Perumal Ramamurthy
Keyword(s):  
Laser Ablation ◽  
Size Effect ◽  
Band Gap ◽  
Quantum Confinement ◽  
Optical Band Gap ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Quantum Size Effect ◽  
Quantum Size ◽  
Fluorescent Carbon

Pulsed laser ablation of lignite in EDA solution exfoliates CDs (CD3) which exhibit the influence of quantum size effect in tuning the optical band gap of CDs.

Observations on the growth of YBa2Cu3O7-δ thin films on MgO by pulsed-laser ablation

1991 ◽  
Vol 49 ◽  
pp. 1068-1069
Author(s):  
M. Grant Norton ◽  
C. Barry Carter
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Laser Ablation ◽  
Substrate Surface ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Laser Ablation Process ◽  
Deposition Parameters

Pulsed-laser ablation has been widely used to produce high-quality thin films of YBa2Cu3O7-δ on a range of substrate materials. The nonequilibrium nature of the process allows congruent deposition of oxides with complex stoichiometrics. In the high power density regime produced by the UV excimer lasers the ablated species includes a mixture of neutral atoms, molecules and ions. All these species play an important role in thin-film deposition. However, changes in the deposition parameters have been shown to affect the microstructure of thin YBa2Cu3O7-δ films. The formation of metastable configurations is possible because at the low substrate temperatures used, only shortrange rearrangement on the substrate surface can occur. The parameters associated directly with the laser ablation process, those determining the nature of the process, e g. thermal or nonthermal volatilization, have been classified as ‘primary parameters'. Other parameters may also affect the microstructure of the thin film. In this paper, the effects of these ‘secondary parameters' on the microstructure of YBa2Cu3O7-δ films will be discussed. Examples of 'secondary parameters' include the substrate temperature and the oxygen partial pressure during deposition.

Tunable Quantum Confinement Effect on Non-volatile Thin Film Polymer Memory Device

2008 ◽  
Author(s):  
Augustin J. Hong ◽  
Kang L. Wang ◽  
Wei Lek Kwan ◽  
Yang Yang ◽  
Dayanara Parra ◽  
...  
Keyword(s):  
Thin Film ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Memory Device ◽  
Confinement Effect ◽  
Film Polymer ◽  
Polymer Memory

scholarly journals Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

2019 ◽  
Vol 1 (10) ◽  
pp. 3963-3972 ◽  
Author(s):  
Arsène Chemin ◽  
Julien Lam ◽  
Gaétan Laurens ◽  
Florian Trichard ◽  
Vincent Motto-Ros ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Doping Agent ◽  
Laser Ablation In Liquids ◽  
Dope Nanoparticles

While doping is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. We suggest a new way to dope nanoparticles using laser ablation in liquids.

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