Accelerated bacterial reduction on Ag–TaN compared with Ag–ZrN and Ag–TiN surfaces

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Metal‐organic frameworks (MOFs) featuring high densities of selective metal binding sites represent promising materials for the extraction of toxic metal ions from liquids. This study presents a Zr‐MOF containing accessible thiol functionalities that demonstrates exceptional adsorption capacity and recyclability for the capture of lead(II) ions (Pb(II)). Structural characterization via Pair Distribution Function (PDF) and Powder X‐ray diffraction (PXRD) analyses revealed well‐defined Zr‐clusters interconnec

Aluminum nitride (AlN) is an emerging material platform for integrated photonics. It provides a wide transparency window (ultraviolet to mid-infrared) and enables versatile functionalities such as optical nonlinearities, pyroelectricity or piezoelectricity. While the sputter deposition for AlN thin films on silicon dioxide (SiO2) facilitates scalability and integration with other photonic platforms, accomplishing high-quality sputtered AlN thin films on SiO2 still bears some challenges. In this work we pres

On the surface of a vibrating liquid bath, instead of coalescing, a drop will continually bounce on a thin film of air between the drop and the free surface, giving rise to rich chaotic dynamics and quantum analog behavior. However, perpetual bouncing is yet to be demonstrated on a vibrating rigid solid, where the control of the drop’s motion is not limited by the bath dynamics. Here we show that vibration of an atomically smooth mica surface prolongs a drop’s hovering state by several orders of magnitude,

In the Mekong delta, inland-based shrimp breeding is a profitable activity requiring significant inflow of high quality freshwater. In turn, discharge of substantial loads of poor quality effluents causes salinization and eutrophication of adjacent water bodies and favors the advent of disease outbreaks. Therefore, development of aquaculture systems targeting water treatment and reuse has become the cornerstone for long-term sustainability. The project focused on the implementation of a continuous water rec

Quaternary ammonium compounds (QACs) are among the most used disinfection agents in consumer products and in industrial applications. Because of their poor biodegradabil ity, after use, they will persist in technical and natural aquatic systems at sub - inhibitory concentrations. Implications of QACs on the development of antimicrobial resistance was detected in several studies, however, the effect of a constant sub - inhibito ry concentration on the development of bacterial resistance remains unknown. The

By controlling the deposition parameters of low pressure chemical vapor deposition (LPCVD) grown ZnO transparent conductive oxide (TCO), we show that it is possible to achieve a switch of crystallographic orientations and to obtain novel surface nanotexture. The new layers are (0 0 0 2) oriented and exhibit light scattering at larger angles than state-of-the-art TCO used in thin film silicon solar cells. This property translates into a strong enhancement of the top amorphous cell current in micromorph tande

This study presents a comparative approach to investigate the potentials of two innovative methods for the synthesis of ZnO and Al-doped ZnO. The first method is a precipitation system working in mild hydrothermal conditions (90°C) using a tubular reactor (Segmented Flow Tubular Reactor, SFTR). The second method is a microwave-assisted hydrothermal process working at 250°C - 38 atmospheres. Nanocrystalline ZnO with a high specific surface area (49–68 m2/g) was obtained with both systems. Smaller equiaxed pa

We have investigated by angle-resolved photoemission spectroscopy changes induced by Xe adsorption on the spin-orbit-split bands of the epitaxial Ag(111) (root 3x root 3)R30 degrees-Bi surface alloy. We observe an extensive backfolding of the alloy band structure due to the formation of a 9 x 9 commensurate or quasicommensurate Xe overlayer and the opening of a small hybridization gap at the intersection of two sets of bands of (primarily) Bi sp(z) and p(xy) characters. The large spin-orbit splitting of the

We have developed hybrid AFM probes with SU-8 polymer body and full platinum and tungsten cantilever and tip. The fabrication process uses surface micromachining of a (100) silicon wafer. The metal (platinum or tungsten) is sputter deposited in oxidation sharpened moulds, giving a final tip sharpness smaller than 20 nm. A SU-8 body is subsequently formed. The release is either done by a wet back-side or dry top-side process. The measured hardness of the tungsten and platinum film values 14.8 GPa and 7.3 GPa

Ballistic emission electron and X-ray photoelectron emission microscopy studies are presented for the sulfur-passivated Pt-GaP(001) buried metal-semiconductor interface. The topographic/ballistic images showed that the roughness of the metal-semiconductor samples after sulfur passivation and Pt deposition is higher than in the as-received substrate. The photoelectron emission microscope microimages showed a significant inhomogeneity as far as the interface chemical environment is concerned. The strongest in

The nature and the role of 1 to 5 nm thick TiO2 seed layers for the growth of textured PbTiO3 and Pb(Zr, Ti)O-3 thin films on textured Pt(111) thin film substrates have been studied. Under otherwise identical in situ sputter deposition process conditions, the PbTiO3 texture could be turned from (100) to (111) orientation by adding the seed layer. This is demonstrated by patterning the TiO2 film. Auger electron spectroscopy and x-ray photoemission spectroscopy showed that the seed layer was a continuous TiO2

Crystalline diamond coatings and, increasingly, diamond-like amorphous carbon (DLC) films are used for tribological and protective layers for their hardness and chemical inertness. They are also under investigation for their electron emitting properties, with possible applications in field emission displays. In this study, hydrogen-free DLC films were deposited by laser ablation using a KrF excimer laser and fluences between 0.5 and 2 J/cm(2). Information about the disorder and short range order in the film

The diffusion of Mn, Cr, and Ti in single crystalline copper was investigated in the temperature range between 582 and 800 K, 639 and 829 It and 621 and 747 K, respectively. Ion beam sputtering in combination with secondary ion mass spectrometry (SIMS) was used to measure concentration depth profiles. The temperature dependence of the diffusion coefficients of Mn, Cr, and Ti in copper can be described by D-Mn = (0.43(-0.20)(+0.37)) x 10(-4) exp(-2.01 +/- 0.035 eV/kT) m(2) s(-1) D-Cr = (0.26(-0.06)(+0.09)) X

Mass selected Ag/sub n/ clusters (n=1,7,19) from a secondary ion source have been deposited onto a Pt(111) substrate at low temperature. The surface and resulting cluster morphology have subsequently been characterized within the same UHV chamber by variable temperature STM as a function of cluster size, kinetic impact energy, and substrate temperature. The kinetic energy per cluster atom was found to be the decisive parameter for a controlled deposition. Noble gas buffer layers ( approximately=10 ML Ar), w

Fiber optic modulators were fabricated by coating optical fibers with electrode and piezoelectric ZnO layers. The techniques of piezoelectric fiber optic modulator (PFOM) fabrication are presented, and the microstructure and crystallographic texture of the coatings are analyzed, Ln order to produce thick (approximately 5 mu m) ZnO coatings, it was necessary to study the reactive de magnetron sputtering process in O-2/Ar gas mixtures under conditions close to the transition between an oxidized and nonoxidize

Platinum silicide films are widely used in silicon devices for ohmic and Schottky contacts. It has been demonstrated in the recent years that Schottky barriers employing ultra-thin platinum silicide films (thickness < 10 nm) are useful for photodetection in the near infrared. We have studied the formation of thin platinum silicide films and their electrical properties as a function of the annealing temperature in presence of an interfacial native silicon oxide layer and with plasma etching damage on the Si

Evaporation of a Cs overlayer in the submonolayer and monolayer regime on a cleaved GaAs(110) surface has been studied by core-level photoemission spectroscopy. The experimental results show three different adsorption regimes deduced from the lineshape of the Ga 3d, As 3d and Cs 4d core levels. These spectra, in fact, result from the overlap of different contributions that have been identified as a function of the Cs coverage: (a) at low Cs deposition a prevalent Cs-As binding and a small percentage of Cs-G

The in-situ growth of PbZrxTi1-xO3 (PZT) and PbTiO3 (PT) thin films by reactive sputter deposition has been investigated for applications with silicon substrates. In-situ deposition from three simultaneously operating magnetron sources was applied. At the selected growth temperature range (550-600 degrees C), self-stabilisation of lead composition by a lar ge desorption rate of Pb on stoichiometric PZT surfaces has been observed. Interlayer mixing was found to be limited to a few monolayers. Both Pt and RuO

We identified the nature of the chemical reaction between silver and the cleaved surface of BiCaSrCuO at room temperature as a Bi-Ag reaction with Bi segregation, accompanied by interaction with the Sr atoms. Our synchrotron-radiation photoemission spectra also reveal an interaction of the adatoms with the O atoms, not detected by previous studies.

We present preliminary results for thin films grown with a recently commissioned ion beam codeposition system designed for in situ growth and etching of YBCO films. The apparatus consists of a high-vacuum chamber (10-7 Torr) equipped with four Kaufmann ion beam sources. Three of the sources are directed at targets for ion beam sputter deposition of materials; the fourth ion source is directed at the substrate for substrate precleaning, oxygen ion beam assisted deposition and ion beam etching. We have determ

Accelerated bacterial reduction on Ag–TaN compared with Ag–ZrN and Ag–TiN surfaces

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Efficient, Reversible Lead Adsorption in a Thiol‐Decorated Zirconium‐Metal–Organic Framework

Sputtered aluminum nitride-on-insulator for scalable integrated photonics

Drops Can Perpetually Bounce over a Vibrating Wettable Solid

Implementation of a constructed wetland for the sustainable treatment of water in shrimp farming activities, Mekong delta, Vietnam

Resistance to disinfection agents: Adaptation of P. aeruginosa to sub inhibitory concentrations of quaternary ammonium compounds (QACs)

Control of LPCVD ZnO growth modes for improved light trapping in thin film silicon solar cells

Comparison of two innovative precipitation systems for ZnO and Al-doped ZnO nanoparticle synthesis

Effect of rare-gas adsorption on the spin-orbit split bands of a surface alloy: Xe on Ag(111)-(root 3 x root 3) R30 degrees-Bi

Full tungsten and platinum nanoprobes for electrically conducting scanning probe methods

Ballistic-electron emission and secondary photoelectron microscopy of the sulfur-passivated Pt-GaP(001) interface

Texture control of PbTiO3 and Pb(Zr,Ti)O-3 thin films with TiO2 seeding

Characterization of diamond-like carbon by Raman spectroscopy, XPS and optical constants

Diffusion of manganese, chromium, and titanium in single crystalline copper

Hard and soft landing of mass selected Ag clusters on Pt(111)

Fabrication and structural analysis of ZnO coated fiber optic phase modulators

Formation and properties of nanometer-thick platinum silicide layers

Cs bonding at the Cs/GaAs(110) interface

In-situ sputter deposition of PT and PZT films on platinum and RuO2 electrodes

Substitutional Reactions in the Surface-Chemistry of Bicasrcuo

Preparation of YBCO thin films by a four ion beam co-deposition system