☆ 4.7 Article Proceedings Paper

Luminescent silicon nanocrystals produced by near-infrared nanosecond pulsed laser ablation in water

APPLIED SURFACE SCIENCE (2014)

Journal

APPLIED SURFACE SCIENCE

Volume 302, Issue -, Pages 62-65

Publisher

ELSEVIER SCIENCE BV

DOI: 10.1016/j.apsusc.2014.01.041

Keywords

Laser ablation; Si-nanocrystal; Silica; Core-shell; Time-resolved luminescence; Atomic force microscopy; Micro-Raman; IR absorption

Categories

Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter

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Abstract

We report the investigation of luminescent nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in water. Combined characterization by AFM and IR techniques proves that these nanoparticles have a mean size of similar to 3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by an oxide layer. Time resolved luminescence spectra evidence visible and UV emissions; a band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell. (C) 2014 Elsevier B.V. All rights reserved.

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Article Chemistry, Physical

Impacts of Zr content of HfZrOx-Based FeFET memory on resilience towards proton radiation

Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu

Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Excellent crystalline silicon surface passivation by transparent conductive Al-doped ZnO/ITO stack

Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong

Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Hydrogen sensing capabilities of highly nanoporous black gold films

Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata

Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Abnormal stability of hydrogenic defects and magnetism near the HSrCoO2.5(001) surface

Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu

Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Space variant fiber nanogratings induced by femtosecond laser direct writing

Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng

Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Wetting mechanisms in the mass transfer process of CuSi3 droplets on the TC4 and 304SS multi-metal system controlled by the hybrid shielding gas atmosphere

Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun

Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Size-regulated Co-doped hetero-interfaced 3D honeycomb MXene as high performance electromagnetic absorber with anti-corrosion performance

Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu

Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Ultrafine Ru nanoparticles on nitrogen-doped CNT arrays for HER: A CVD-based protocol achieving microstructure design and strong catalyst-support interaction

Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng

Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Novel biphenylene as cisplatin anticancer drug delivery carrier; insight from theoretical perspective

Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty

Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Platform for surface-enhanced Raman scattering in layered quantum materials

Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong

Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Cyclotriphosphazene (P3N3) derived FeOx@SPNO-C core-shell nanospheres as peroxymonosulfate activator for degradation via non-radical pathway

Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun

Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.

APPLIED SURFACE SCIENCE (2024)

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Article Chemistry, Physical

Hierarchical confinement of Prussian blue nanoparticles via NH2-MIL-88B (Fe): Rational design and electrocatalytic application

Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan

Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.

APPLIED SURFACE SCIENCE (2024)

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