Silicon (001) Heteroepitaxy on 3C-SiC(001)/Si(001) Seed

We report for the first time the successful heteroepitaxial growth of Si(100) oriented layer on top of a 3C-SiC(001) seed. By using a post-growth modification of the 3C-SiC surface (pulse insertion of precursors during cooling), it led to a change in Si nucleation, favoring squared (100) islands instead of elongated (110) ones. Without this surface modification step, the Si layers grown on 3C-SiC were always polycrystalline with a mixture of (110) and (100) orientations. Using such Si(100) layer grown on top of 3C-SiC(100), a (100) oriented 3C-SiC single crystalline layer was successfully grown on top, fabricating thus for the first time a fully (100) oriented multilayer heterostructure made of Si(substrate)/SiC/Si/SiC.

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Single-crystalline epitaxial TiO film: A metal and superconductor, similar to Ti metal

Science Advances ◽

10.1126/sciadv.abd4248 ◽

2021 ◽

Vol 7 (2) ◽

pp. eabd4248

Author(s):

Fengmiao Li ◽

Yuting Zou ◽

Myung-Geun Han ◽

Kateryna Foyevtsova ◽

Hyungki Shin ◽

...

Keyword(s):

Transition Metal ◽

Density Functional ◽

Tight Binding ◽

Crystal Form ◽

Titanium Monoxide ◽

Binding Model ◽

Functional Theory ◽

Single Crystalline ◽

First Time ◽

Lattice Matched

Titanium monoxide (TiO), an important member of the rock salt 3d transition-metal monoxides, has not been studied in the stoichiometric single-crystal form. It has been challenging to prepare stoichiometric TiO due to the highly reactive Ti2+. We adapt a closely lattice-matched MgO(001) substrate and report the successful growth of single-crystalline TiO(001) film using molecular beam epitaxy. This enables a first-time study of stoichiometric TiO thin films, showing that TiO is metal but in proximity to Mott insulating state. We observe a transition to the superconducting phase below 0.5 K close to that of Ti metal. Density functional theory (DFT) and a DFT-based tight-binding model demonstrate the extreme importance of direct Ti–Ti bonding in TiO, suggesting that similar superconductivity exists in TiO and Ti metal. Our work introduces the new concept that TiO behaves more similar to its metal counterpart, distinguishing it from other 3d transition-metal monoxides.

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Solid Phase Growth of some Metal and Metal Oxide Thin Films on Sapphire and Quartz Glass Substrates

Materials Science Forum ◽

10.4028/www.scientific.net/msf.753.505 ◽

2013 ◽

Vol 753 ◽

pp. 505-509

Author(s):

Yuichi Sato ◽

Toshifumi Suzuki ◽

Hiroyuki Mogami ◽

Fumito Otake ◽

Hirotoshi Hatori ◽

...

Keyword(s):

Thin Films ◽

Quartz Glass ◽

Glass Substrate ◽

Solid Phase ◽

Quartz Glass Substrate ◽

Heteroepitaxial Growth ◽

Phase Growth ◽

Single Crystalline ◽

Glass Substrates ◽

Amorphous Quartz

Solid phase growth of thin films of copper (Cu), aluminum (Al) and zinc oxide (ZnO) on single crystalline sapphire and quartz glass substrates were tried by heat-treatments and their crystallization conditions were investigated. ZnO thin films relatively easily recrystallized even when they were deposited on the amorphous quartz glass substrate. On the other hand, Cu and Al thin films hardly recrystallized when they were deposited on the quartz glass substrate. The metal thin films could be recrystallized at only extremely narrow windows of the heat-treatment conditions when they were deposited on the single crystalline sapphire substrate. The window of the solid phase heteroepitaxial growth condition of the Al film was wider than that of the Cu film.

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Synthesis of single-crystalline GeS nanoribbons for high sensitivity visible-light photodetectors

Journal of Materials Chemistry C ◽

10.1039/c5tc01435b ◽

2015 ◽

Vol 3 (31) ◽

pp. 8074-8079 ◽

Cited By ~ 66

Author(s):

Changyong Lan ◽

Chun Li ◽

Yi Yin ◽

Huayang Guo ◽

Shuai Wang

Keyword(s):

Visible Light ◽

Vapor Deposition ◽

High Performance ◽

Incident Light ◽

Chemical Vapor ◽

High Sensitivity ◽

Single Crystalline ◽

Promising Application ◽

Photo Detection ◽

First Time

Single-crystalline GeS nanoribbons were synthesized by chemical vapor deposition for the first time. The nanoribbon photodetectors respond to the entire visible incident light with a response edge at around 750 nm and a high responsivity, indicating their promising application for high performance broadband visible-light photo-detection.

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Benchmark characterization of the thermoelectric properties of individual single-crystalline CdS nanowires by a H-type sensor

RSC Advances ◽

10.1039/c7ra02734f ◽

2017 ◽

Vol 7 (41) ◽

pp. 25298-25304 ◽

Cited By ~ 1

Author(s):

Haidong Wang ◽

Dingshan Zheng ◽

Xing Zhang ◽

Hiroshi Takamatsu ◽

Weida Hu

Keyword(s):

Thermoelectric Properties ◽

Thermoelectric Performance ◽

Single Crystalline ◽

Cds Nanowires ◽

First Time

A precision H-type sensor method has been developed to measure the thermoelectric performance of individual single-crystalline CdS nanowires for the first time.

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Synthesis of high-Si hierarchical beta zeolites without mesoporogen and their catalytic application in the methanol to propene reaction

Catalysis Science & Technology ◽

10.1039/c8cy00631h ◽

2018 ◽

Vol 8 (11) ◽

pp. 2966-2974 ◽

Cited By ~ 9

Author(s):

Xuebin Zhao ◽

Linying Wang ◽

Peng Guo ◽

Nana Yan ◽

Tantan Sun ◽

...

Keyword(s):

Single Crystalline ◽

Catalytic Application ◽

Beta Zeolites ◽

First Time ◽

Hierarchical Beta

High-Si single-crystalline beta zeolites with intracrystal mesopores were synthesized for the first time and investigated as catalysts for the methanol to propene (MTP) reaction.

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Surface Modification Engineering Enabling 4.6 V Single‐Crystalline Ni‐Rich Cathode with Superior Long‐Term Cyclability

Advanced Functional Materials ◽

10.1002/adfm.202109421 ◽

2021 ◽

pp. 2109421

Author(s):

Xin‐Ming Fan ◽

Ying‐De Huang ◽

Han‐Xin Wei ◽

Lin‐Bo Tang ◽

Zhen‐Jiang He ◽

...

Keyword(s):

Surface Modification ◽

Single Crystalline

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Direct Synthesis of Silicon Nanowires using Silane and Molten Gallium

MRS Proceedings ◽

10.1557/proc-737-f6.2 ◽

2002 ◽

Vol 737 ◽

Author(s):

Shashank Sharma ◽

Mahendra K. Sunkara ◽

Elizabeth C. Dickey

Keyword(s):

Silicon Nanowires ◽

Crystalline Silicon ◽

Direct Synthesis ◽

Growth Direction ◽

Single Crystalline ◽

Gas Phase Chemistry ◽

Transmission Electron ◽

Phase Chemistry ◽

First Time ◽

Low Solubility

ABSTRACTWe report for the first time, bulk synthesis of single crystalline silicon nanowires using molten gallium pools and an activated vapor phase containing silane. The resulting silicon nanowires were single crystalline with <100> growth direction. Nanowires contained an unexpectedly thin, non-uniform oxide sheath determined using high-resolution Transmission Electron Microscopy (TEM). Nanowires were tens of nanometers in diameter and tens to hundreds of microns long. The use of activated gas phase chemistry containing solute of interest over molten metal pools of low-solubility eutectics such as gallium offer a viable route to generate nanowire systems containing abrupt compositional hetero-interfaces.

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Real-time PCR for direct aptamer quantification on functionalized graphene surfaces

Scientific Reports ◽

10.1038/s41598-019-55892-3 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 1

Author(s):

Viviane C. F. dos Santos ◽

Nathalie B. F. Almeida ◽

Thiago A. S. L. de Sousa ◽

Eduardo N. D. Araujo ◽

Antero S. R. de Andrade ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Surface Modification ◽

Silicon Dioxide ◽

Real Time ◽

Real Time Pcr ◽

Functionalized Graphene ◽

Graphene Surface ◽

Precise Quantification ◽

Graphene Functionalization ◽

First Time

AbstractIn this study, we develop a real-time PCR strategy to directly detect and quantify DNA aptamers on functionalized graphene surfaces using a Staphylococcus aureus aptamer (SA20) as demonstration case. We show that real-time PCR allowed aptamer quantification in the range of 0.05 fg to 2.5 ng. Using this quantitative technique, it was possible to determine that graphene functionalization with amino modified SA20 (preceded by a graphene surface modification with thionine) was much more efficient than the process using SA20 with a pyrene modification. We also demonstrated that the functionalization methods investigated were selective to graphene as compared to bare silicon dioxide surfaces. The precise quantification of aptamers immobilized on graphene surface was performed for the first time by molecular biology techniques, introducing a novel methodology of wide application.

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Wide-Bandgap μc-Si:H/Single-Crystalline Si Abrupt Heterojunction by Si Surface Modification

10.7567/ssdm.1990.d-8-4 ◽

1990 ◽

Author(s):

K. SASAKI ◽

Y. KUBOTA ◽

T. MIYAJIMA ◽

S. FURUKAWA

Keyword(s):

Surface Modification ◽

Wide Bandgap ◽

Single Crystalline

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Synthesis and characterization of single-crystalline Bi2O2SiO3 nanosheets with exposed {001} facets

Catalysis Science & Technology ◽

10.1039/c7cy01291h ◽

2017 ◽

Vol 7 (17) ◽

pp. 3791-3801 ◽

Cited By ~ 19

Author(s):

Shuoping Ding ◽

Xuyang Xiong ◽

Xiufan Liu ◽

Yiqiu Shi ◽

Qingqing Jiang ◽

...

Keyword(s):

Hydrothermal Method ◽

Bismuth Oxide ◽

Synthesis And Characterization ◽

Single Crystalline ◽

One Step ◽

First Time

Bismuth oxide silicate (Bi2O2SiO3) single-crystalline nanosheets with exposed {001} facets were synthesized for the first time via a facile one-step CTAB-assisted hydrothermal method in the presence of NaOH.

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