Effect of laser fluence on the characteristics of Al nanoparticles produced by laser ablation in deionized water

Abbasi, Muhammad Awais; Dorranian, Davoud

doi:10.1134/s0030400x15030029

Cited by 27 publications

(9 citation statements)

References 32 publications

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“…The absorption of Al nanoparticles in the wavelength range from 250 to 300 nm is the highest among the three kinds of nanoparticles, which can explain why Al nanoparticles can induce the strongest enhancement effect in comparison with Au and Ag nanoparticles. This result is consistent with previous studies in which surface plasmon resonance occurs around 285 nm for Al nanoparticles. , …”

Section: Resultssupporting

confidence: 94%

“…This result is consistent with previous studies in which surface plasmon resonance occurs around 285 nm for Al nanoparticles. 50,51 The PL studies for the device with sapphire/AlN buffer layers/superlattices/AlGaN/AlGaN MQWs/Al nanoparticles were performed under different pumping energy densities of 266 nm pulsed laser excitation, shown in Figure 2c. Starting at low pumping power, the broad spontaneous emission (SE) increases gradually as the pumping power density increases.…”

Section: Resultsmentioning

confidence: 99%

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Anderson Localization Enabled Spectrally Stable Deep-Ultraviolet Laser Based on Metallic Nanoparticle Decorated AlGaN Multiple Quantum Wells

Shen

et al. 2020

ACS Nano

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Random lasers exhibit many exotic properties, including chaotic behavior, light localization, broad angular emission, and cost-effective fabrication, which enable them to attract both scientific and industrial interests. However, before the realization of their potential applications, several challenges still remain including the underlying mechanism and controllability due to their inherent multidirectional and chaotic fluctuations. Through more than two decades of collaborative efforts, the discovery of Anderson localization in random lasers provides a plausible route to resolve the difficulties, which enables one to tailor the number of lasing modes and stabilize the emission spectra. However, the related studies are rather rare and only restricted to limited wavelengths. In this study, based on enhanced Anderson localization assisted by surface plasmon resonance, spectrally stable deepultraviolet lasing action in AlGaN multiple quantum wells (MQWs) is demonstrated. Our work serves as firm evidence to demonstrate the underlying mechanism of stabilized deep-ultraviolet random laser action that multiple scattering of a light beam in a disordered medium can induce Anderson localization similar to electron behavior. This feature covers the whole spectral range, and it is a universal phenomenon of an electromagnetic wave. Notably, stabilized deep-ultraviolet random laser action has not been demonstrated in all previous studies, even though it has great academic interest and potential application in many areas from environmental protection to biomedical engineering.

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Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Anderson Localization Enabled Spectrally Stable Deep-Ultraviolet Laser Based on Metallic Nanoparticle Decorated AlGaN Multiple Quantum Wells

Shen

et al. 2020

ACS Nano

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“…One important issue is the laser fluence threshold, which corresponds to the liquid’s optical breakdown. Above this value, the abundance of reactive oxygen species is dramatically increased, increasing the oxidization of Al NPs in water during LAL . Water breakdown allows the ratio of ZnO to ZnOOH products to be tuned and, potentially, the PL properties of ZnO NPs to be tailored from violet to green emission …”

Section: Material Process Liquid and Laser Parametersmentioning

confidence: 99%

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

2017

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Driven by functionality and purity demand for applications of inorganic nanoparticle colloids in optics, biology, and energy, their surface chemistry has become a topic of intensive research interest. Consequently, ligand-free colloids are ideal reference materials for evaluating the effects of surface adsorbates from the initial state for application-oriented nanointegration purposes. After two decades of development, laser synthesis and processing of colloids (LSPC) has emerged as a convenient and scalable technique for the synthesis of ligand-free nanomaterials in sealed environments. In addition to the high-purity surface of LSPC-generated nanoparticles, other strengths of LSPC include its high throughput, convenience for preparing alloys or series of doped nanomaterials, and its continuous operation mode, suitable for downstream processing. Unscreened surface charge of LSPC-synthesized colloids is the key to achieving colloidal stability and high affinity to biomolecules as well as support materials, thereby enabling the fabrication of bioconjugates and heterogeneous catalysts. Accurate size control of LSPC-synthesized materials ranging from quantum dots to submicrometer spheres and recent upscaling advancement toward the multiple-gram scale are helpful for extending the applicability of LSPC-synthesized nanomaterials to various fields. By discussing key reports on both the fundamentals and the applications related to laser ablation, fragmentation, and melting in liquids, this Article presents a timely and critical review of this emerging topic.

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“…Research has shown that laser fluence influences NP size and distribution. Abbasi et al [113] examined the effects of laser fluence (1-3 J/m 2 ) on Al NPs generated using PLA of Al in deionised water. They observed that the size of the produced Al-oxide NPs increased with fluence at levels below the threshold value.…”

Section: Laser Fluencementioning

confidence: 99%

Influence of Laser Process Parameters, Liquid Medium, and External Field on the Synthesis of Colloidal Metal Nanoparticles Using Pulsed Laser Ablation in Liquid: A Review

2022

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Pulsed laser ablation in liquid, used for nanoparticle synthesis from solid bulk metal targets (a top-down approach), has been a hot topic of research in the past few decades. It is a highly efficient and ‘green’ fabrication method for producing pure, stable, non-toxic (ligand-free), colloidal nanoparticles, which is often challenging using traditional chemical methods. Due to the short time scale interaction between the laser pulses and the target, it is difficult to achieve complete control on the physical characteristics of metallic nanoparticles. Laser process parameters, liquid environment, and external fields vastly effect the shape and structure of nanoparticles for targeted applications. Past reviews on pulsed laser ablation have focused extensively on synthesising different materials using this technique but little attention has been given to explaining the dependency aspect of the process parameters in fine-tuning the nanoparticle characteristics. In this study, we reviewed the state of the art literature available on this technique, which can help the scientific community develop a comprehensive understanding with special insights into the laser ablation mechanism. We further examined the importance of these process parameters in improving the ablation rate and productivity and analysed the morphology, size distribution, and structure of the obtained nanoparticles. Finally, the challenges faced in nanoparticle research and prospects are presented.

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Effect of laser fluence on the characteristics of Al nanoparticles produced by laser ablation in deionized water

Cited by 27 publications

References 32 publications

Anderson Localization Enabled Spectrally Stable Deep-Ultraviolet Laser Based on Metallic Nanoparticle Decorated AlGaN Multiple Quantum Wells

Anderson Localization Enabled Spectrally Stable Deep-Ultraviolet Laser Based on Metallic Nanoparticle Decorated AlGaN Multiple Quantum Wells

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

Influence of Laser Process Parameters, Liquid Medium, and External Field on the Synthesis of Colloidal Metal Nanoparticles Using Pulsed Laser Ablation in Liquid: A Review

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