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Efficient fiber-to-chip couplers for multi-port access to photonic integrated circuits are paramount for a broad class of applications, ranging, e.g., from telecommunication to photonic computing and quantum technologies. While…

应用物理 · 物理学 2023-05-02 Emma Lomonte , Maik Stappers , Linus Krämer , Wolfram H. P. Pernice , Francesco Lenzini

Graphene and carbon nanotubes (CNTs) share the same atomic structure of hexagonal carbon lattice. Yet, their synthesis differs in many aspects, including the shape and size of the catalyst. Here, we demonstrate a floating-catalyst chemical…

In the present work we grow self-organized TiO2 nanotube arrays with a defined and controlled regular spacing between individual nanotubes. These defined intertube gaps allow to build up hierarchical 1D-branched structures, conformally…

材料科学 · 物理学 2016-10-27 Nhat Truong Nguyen , Selda Ozkan , Imgon Hwang , Anca Mazare , Patrik Schmuki

Advanced nanomaterials with enhanced optical and photocatalytic properties for the photodegradation of organic pollutants, in particular pharmaceuticals and personal care products (PPCPs), were successfully prepared by a swift one-pot…

应用物理 · 物理学 2022-09-26 D. M. Alves , J. V. Prata , A. J. Silvestre , O. C. Monteiro

A boost in the development of flexible and wearable electronics facilitates the design of new materials to be applied as transparent conducting films (TCFs). Although single-walled carbon nanotube (SWCNT) films are the most promising…

The successful application of titanium oxide-graphene hybrids in the fields of photocatalysis, photovoltaics and photodetection strongly depends on the interfacial contact between both materials. The need to provide a good coupling between…

We performed Scanning Thermal Microscopy measurements on single layers of chemical-vapor-deposited -CVD- graphene supported by different substrates, namely SiO2, Al2O3 and PET using a double-scan technique to remove the contribution to the…

We report on a large improvement in the wetting of Al2O3 thin films grown by un-seeded atomic layer deposition on monolayer graphene, without creating point defects. This enhanced wetting is achieved by greatly increasing the nucleation…

材料科学 · 物理学 2014-11-14 Bruno Dlubak , Piran R. Kidambi , Robert S. Weatherup , Stephan Hofmann , John Robertson

We show that it is possible to prepare and identify ultra--thin sheets of graphene on crystalline substrates such as SrTiO$_3$, TiO$_2$, Al$_2$O$_3$ and CaF$_2$ by standard techniques (mechanical exfoliation, optical and atomic force…

材料科学 · 物理学 2009-11-06 S. Akcoeltekin , M. El Kharrazi , B. Koehler , A. Lorke , M. Schleberger

Zr/N co-doped TiO2 nanostructures were successfully synthesized using nanotubular titanic acid (NTA) as precursors by a facile wet chemical route and subsequent calcination. These Zr/N-doped TiO2 nanostructures made by NTA precursors show…

材料科学 · 物理学 2013-12-31 Min Zhang , Xinluan Yu , Dandan Lu , Jianjun Yang

The extensive use of glyphosate in agriculture has raised environmental concerns due to its adverse effects on plants, animals, microorganisms, and humans. This study investigates the interactions between ionized glyphosate and…

材料科学 · 物理学 2026-05-08 H. T. Silva , L. C. S. Faria , T. A. Aversi-Ferreira , I. Camps

Cubic spinel lithium manganese oxide (LiMn2O4) has been able to attract a great deal of attention over the years as a promising cathode material for large scale lithium ion batteries. Here a facile hydrothermal route followed by solid state…

材料科学 · 物理学 2018-08-31 Niraj Kumar , Jassiel R. Rodriguez , Vilas G. Pol , Arijit Sen

Graphite nanofibers (GNFs) have been demonstrated to be a promising material for hydrogen storage and heat management in electronic devices. Here, by means of first-principles and transport simulations, we show that GNFs can also be an…

介观与纳米尺度物理 · 物理学 2017-09-15 Van-Truong Tran , Jérôme Saint-Martin , Philippe Dollfus , Sebastian Volz

A model for the formation of carbon nanotubes (CNTs) and layered graphene in an arc discharge method is developed on the basis of observed erosion of graphite anode under various experimental conditions and analyses of the morphology of the…

材料科学 · 物理学 2019-07-23 Soumen Karmakar

We present here a novel resist formulation with active thiol groups at the surface. The material is UV curable, and can be patterned at the micro- and nanoscale by UV nanoimprint lithography. The resist formulation development, its…

材料科学 · 物理学 2020-10-23 Manuel Müller , Rukan Nasri , Lars Tiemann , Irene Fernandez-Cuesta

In the present work we compare TiO2 nanotube lift-off strategies for the construction of front-side illuminated dye-sensitized solar cells (DSSCs). Anodic nanotube layers were detached from the metallic back contact by using different…

Herein, we report a case study in which we saw the spontaneous conversion of commercial bulk graphite into LaB6 decorated carbon nanotubes (CNTs) under normal atmospheric conditions. The feedstock graphite was used as a hollow cylindrical…

In this work, we have developed economic process to elaborate scalable titanium dioxide nanotube layers which show a tunable functionality. The titanium dioxide nanotube layers was prepared by electrochemical anodization of Ti foil in 0.4…

材料科学 · 物理学 2015-05-18 E. Feschet-Chassot , V. Raspal , O. K. Awitor , F. Bonnemoy , J. L. Bonnet , J. Bohatier

Here we report on a novel chemical route to synthesize homogenous cobalt doped titanate nanotubes (CoTNT), using an amorphous Co-doped precursor. The influence of the synthesis temperature, autoclave dwell time and metal doping on the…

材料科学 · 物理学 2013-08-27 V. C. Ferreira , M. R. Nunes , A. J. Silvestre , O. C. Monteiro

The work here has demonstrated the use a simple microwave plasma process for welding carbon nanotubes onto solid surfaces such as plastics and glasses, it was found that due to the lower softening point and viscosity of polystyrene…

材料科学 · 物理学 2015-12-02 Pejman Talemi , George Simon