Deterministic coupling of single solid-state emitters to nanocavities is the key for integrated quantum information devices. We here fabricate a photonic crystal cavity around preselected silicon-vacancy color center in diamond and demonstrate modification internal population dynamics radiative efficiency. The controlled, room-temperature gives rise resonant Purcell enhancement zero-phonon transition by factor 19, coming along with 2.5-fold reduction emitter's lifetime.

We present the controlled creation of single nitrogen-vacancy (NV) centers via ion implantation at center a photonic crystal cavity which is fabricated in an ultrapure, diamond membrane. High-resolution placement NV achieved using collimation 5keV-nitrogen beam through pierced tip atomic force microscope (AFM). demonstrate coupling implanted centers' broad band fluorescence to mode and observe Purcell enhancement spontaneous emission. The results are good agreement with master equation model...

Abstract Direct laser interference patterning (DLIP) has in previous work shown to be an effective tool for producing photocatalytic surfaces a single relatively simple processing step. These can interesting candidates antifouling or self‐cleaning surfaces, as well substrates water treatment. In this contribution, various heat treatments are performed both during and after the create with even higher activities better understand formation of process oxides their effect on resulting activity....

Color centers are promising single-photon emitters owing to their operation at room temperature and high photostability. In particular, using nanodiamonds as a host material is of interest for sensing metrology. Furthermore, being solid-state system allows incorporation photonic systems tune both the emission intensity photoluminescence (PL) spectrum therefore adapt individual color center desired properties. We show successful coupling single nanodiamond hosting silicon-vacancy plasmonic...

Color centers are promising single-photon emitters owing to their operation at room temperature and high photostability. In particular, using nanodiamonds as a host material is of interest for sensing metrology. Furthermore, being solid-state system allows incorporation photonic systems tune both the emission intensity photoluminescence spectrum therefore adapt individual color center desired properties. We show successful coupling single nanodiamond hosting silicon-vacancy plasmonic double...

Metal multilayers exhibit improved material properties in a wide range of applications. Used as coatings, they can make component more resistant to wear or corrosion particular environments. Multilayer coatings also be used add additional and it multifunctional. The fabrication characterization are therefore an important issue. Herein, both the Ni/Cu nanocrystalline/coarse‐grained Ni (nc/cg‐Ni) presented. production by means electrodeposition allows variation layer thicknesses from few...

Abstract Al-alloys with Si as the main alloying element constitute vast majority of Al castings used commercially today. The eutectic microstructure in these alloys can be modified from plate-like to coral-like by addition a small amount third improve ductility and toughness. In this investigation effects Eu Yb are studied their influence on is compared further understand modification. two elements impact alloy differently, where modifies into structure while does not. Atom probe tomography...

We report the realization of a device based on single Nitrogen-vacancy (NV) center in diamond coupled to fiber-cavity for use as photon source (SPS). The consists two concave mirrors each directly fabricated facets optical fibers and preselected nanodiamond containing NV deposited onto one these mirrors. Both, cavity in- output are fiber-coupled emission wavelength is easily tunable by variation separation with piezo-electric crystal. By coupling we achieve an increase spectral rate density...

Abstract A new method for the image acquisition in scanning electron microscopy (SEM) was introduced. The used adaptively increased pixel-dwell times to improve signal-to-noise ratio (SNR) areas of high detail. In low detail, dose reduced on a per pixel basis and a-posteriori processing techniques were applied remove resulting noise. technique realized by sample twice. first, quick scan small generate noisy using dose. This analyzed automatically software algorithm generated sparse pattern...

Surface patterning in the micro- and nanometer-range by means of pulsed laser interference has repeatedly proven to be a versatile tool for surface functionalization. With these techniques, however, is often changed not only terms morphology but also chemistry. In this study, we present an in-depth investigation chemical modification occurring during copper ultrashort direct (USP-DLIP). A multimethod approach parallel analysis using visualizing, topography-sensitive, spectroscopic techniques...

Correlative microscopy approaches are attracting considerable interest in several research fields such as materials and battery research. Recent developments regarding X-ray computer tomography have made this technique available a compact module for scanning electron microscopes (SEMs). Nano-computed (nanoCT) allows morphological analysis of samples nondestructive way to generate 2D 3D overviews. However, alone is not sufficient advanced studies, draw conclusions beyond morphology, chemical...

Mechanical size effects are a well known phenomenon when the sample volume is reduced or characteristic length of microstructure changed. While in micropillar compression (smaller stronger) due to grain refinement (Hall-Petch) understood, this less so fracture mechanics. Given lack knowledge, main question addressed work is: What happens fatigue crack growth properties extrinsic play role? To answer question, nanocrystalline nickel cantilevers, ranging width from 5 , were subjected growth....

This work presents studies of sputtered Al/Ni reactive multilayers by transmission electron microscopy. They are prepared for these analyses three methods (both Ga‐ and Xe‐based focused ion beam, FIB, tripod polishing plus Ar + milling in precision system, PIPS) to check their impact on materials. Every sample shows polycrystalline mostly chemically pure layers. also hint existence intermetallic compounds, especially the tripod‐prepared sample. These intermetallics first originate from...

The manipulation of topography is crucial in surface engineering to customize material properties and functionalities for specific applications. Scientists have been inspired by natural surfaces found plants animals increasingly used engineered structures improve characteristics such as friction, wear, electrical resistance, wettability, antimicrobial behavior across various fields. Direct laser interference patterning (DLIP) a technique that can rapidly create well‐defined, periodic...

Introduction: Topographic surface patterning in the micro- and nanometer scale has evolved into a well applied approach functionalization following biomimetic blueprints from nature. Depending on production process an additional impact of process-related substrate modification to be considered functional optimization. This is especially true case antimicrobial applications Cu surfaces where properties might bactericidal efficiency. Methods: In this regard, effect ultrashort pulsed direct...

Abstract Established and already commercialized energetic materials, such as those based on Ni/Al for joining, lack the adequate combination of high energy density ductile reaction products. To join components, this is required mechanically reliable bonds. In addition to improvement existing technologies, expansion into new fields application can also be anticipated which triggers search improved materials. Here, we present a comprehensive characterization key parameters that enables us...