Nanoscale transition-metal dichalcogenide (TMDC) materials, such as MoS2, exhibit promising behavior in next-generation electronics and energy-storage devices. TMDCs have a highly anisotropic crystal structure, with edge sites basal planes exhibiting different structural, chemical, electronic properties. In virtually all applications, two-dimensional or bulk must be interfaced other materials (such electrical contacts transistor). The presence of vs (i.e., the crystallographic orientation...

The early stages of corrosion occurring at liquid-solid interfaces control the evolution material's degradation process, yet due to their transient state, analysis remains a formidable challenge. Here tests are performed on MgCa alloy, candidate material for biodegradable implants using pure water as model system. reaction is suspended by plunge freezing into liquid nitrogen. early-stage process nanoscale correlating cryo-atom probe tomography (APT) with transmission-electron microscopy...

Spatially resolved metabolic profiling and isotope-tagged protein analysis revealed unique lipid distributions in tissues.

Repeatable and reliable site-specific preparation of specimens for atom probe tomography (APT) at cryogenic temperatures has proven challenging. A generalized workflow is required specimen including lift-out via focused ion beam in situ deposition capping layers, to strengthen that will be exposed high electric field stresses during evaporation APT protect them from environment transfer into the probe. Here, we build on existing protocols showcase analysis a variety metals, oxides, supported...

Atom probe tomography requires needle-shaped specimens with a diameter typically below 100 nm, making them both very fragile and reactive, defects (notches at grain boundaries or precipitates) are known to affect the yield data quality. The use of conformal coating directly on sharpened specimen has been proposed increase reduce background. However, date, these coatings have applied ex situ mostly not uniform. Here, we report controlled focused-ion beam in deposition thin metal film...

Abstract Atom probe tomography (APT) analysis is being actively used to provide near-atomic-scale information on the composition of complex materials in three-dimensions. In recent years, there has been a surge interest technique investigate distribution hydrogen metals. However, presence almost all specimens from nearly material systems caused numerous debates as its origins and impact quantitativeness measurement. It often perceived that most H arises residual gas ionization, therefore...

To advance the understanding of degradation liquid electrolyte and Si electrode, their interface, we exploit latest developments in cryo-atom probe tomography. We evidence anode corrosion from decomposition Li salt before charge–discharge cycles even begin. Volume shrinkage during delithiation leads to development nanograins recrystallization regions left amorphous by lithiation. The newly created grain boundaries facilitate pulverization nanoscale fragments, one is found floating...

In this Letter, we report, to the best of our knowledge, first demonstration high-quality integrated microdisk resonators (MDRs) on a 3C-silicon carbide-on-insulator (SiCOI) platform, working over wide bandwidth from visible near-infrared wavelengths. We show record-high quality factors for carbide (SiC) MDRs 242,000, 112,000, and 83,000 at wavelengths 1550 nm, 770 650 respectively, based 3C-SiC films with surface roughness as low 1.4 Å, achieved by sample-transfer bonding, precise...

Abstract Composition modulation of two-dimensional transition-metal dichalcogenides (TMDs) has introduced an enticing prospect for the synthesis Van der Waals alloys and lateral heterostructures with tunable optoelectronic properties. Phenomenologically, properties are entangled to a strain that is intrinsic processes. Here, we report unprecedented biaxial stems from composition monolayer TMD (e.g., MoS 2 x Se 2(1 - ) inflicts fracture on crystals. We find starting crystal (MoSe fails adjust...

The rates of atomic clustering and precipitation hardening are closely related to the diffusivity solutes concentration vacancies during natural aging aluminum alloys. measurement at room temperature, especially in systems with an equilibrium vacancy concentration, is beneficial design process. However, this has long been challenging because extremely low diffusion temperature presence supersaturated vacancies. In work, we propose a method quantify based on kinetic evaluation spinodal...

Abstract Material sustainability requires energy‐efficient and rapid strengthening processes. In alloys, through diffusion‐driven precipitation is limited by the low vacancy concentration, with fewer than one per 100 billion lattice sites at room temperature in metals such as aluminum iron under thermodynamic equilibrium. Artificially increasing concentrations 1 to 7 orders of magnitude above equilibrium levels quenching, irradiation, or deformation can significantly accelerate material...

Imaging of liquids and cryogenic biological materials by electron microscopy has been recently enabled innovative approaches for specimen preparation the fast development optimised instruments cryo-enabled (cryo-EM). Yet, Cryo-EM typically lacks advanced analytical capabilities, in particular light elements. With protocols frozen wet preparation, atom probe tomography (APT) could advantageously complement insights gained cryo-EM. Here, we report on different that have proposed to enable...

Abstract Through its capability for 3D mapping of Li at the nanoscale, atom probe tomography (APT) is poised to play a key role in understanding microstructural degradation lithium‐ion batteries (LIB) during successive charge‐ and discharge cycles. However, APT application materials LIB plagued by field induced delithiation (deintercalation) Li‐ions analysis itself that prevents precise assessment distribution. Here, we showcase how thin Cr‐coating, in‐situ formed on specimens NMC811...

Interest in the technique of low temperature environmental nanoindentation has gained momentum recent years. Low indentation apparatuses can, for instance, be used systematic measurements mechanical properties ice laboratory, order to accurately determine inputs constitutive equations describing rheologic behaviour natural (i.e., Glen flow law). These are essential predict movement glaciers and sheets over time as a response changing climate. Herein, we introduce new experimental setup...

Through its capability for 3D mapping of Li at the nanoscale, atom probe tomography (APT) is poised to play a key role in understanding microstructural degradation lithium-ion batteries (LIB) during successive charge and discharge cycles. However, APT application materials LIB plagued by field induced delithiation (deintercalation) Li-ions analysis itself that prevents precise assessment distribution. Here, we showcase how thin Cr-coating, in-situ formed on specimens NMC811 focused-ion beam...

Abstract Tuning resonance lineshapes of plasmonic structures is essential to create customized media with compelling optical properties for optimized light–matter interactions. The diversity available metals and the variety design architectures provide a rich portfolio statically controlling lineshape. However, dynamic tuning attributes (e.g., wavelength linewidth) are yet be more expanded, especially when narrow linewidth on demand. Here, using nanopatch array, sharp crystal (PC) resonances...

Graphical Abstract The Cover Feature demonstrates how a thin metallic coating deposited in situ on specimens for atom probe tomography allows systematic study of the Li distribution NMC811 at near-atomic scale. Such an analysis was previously extremely challenging because extreme field used that caused deintercalation during analysis. More information can be found Research Article by M. P. Singh, B. Gault and co-workers.

Abstract Cryogenic atom probe tomography (cryo-APT) is being developed to enable nanoscale compositional analyses of frozen liquids. Yet, the availability readily available substrates that allow for fixation liquids while providing sufficient strength their interface still an issue. Here, we propose use 1–2-µm-thick binary alloy film gold–silver sputtered onto flat silicon, with adhesion without additional layer. Through chemical dealloying, successfully fabricate a nanoporous substrate,...

The cold spray deposition technique has been used to produce a new class of solid lubricant coatings using powder feedstocks the metal disulfides WS2 or MoS2, either pure mixed with Cu and Ni powders. Friction cycle lives were obtained ball-on-flat reciprocating tribometry coated 304 SS flats in dry nitrogen vacuum at higher Hertzian contact stresses (Smax = 1386 MPa (201 ksi)). measured friction thickness much lower than for previous studies (COF 0.03 ± 0.01 ≤1 µm, respectively), which is...

Abstract The development of sustainable transportation and communication systems requires an increase in both energy density capacity retention Li‐batteries. Using substrates forming a solid solution with body‐centered cubic Li enhances the cycle stability anode‐less batteries. However, it remains unclear how substrate microstructure affects lithiation behavior. Here, correlative, near‐atomic scale probing approach is deployed through combined ion‐ electron‐microscopy to examine distribution...

Atom probe tomography requires needle-shaped specimens with a diameter typically below 100 nm, making them both very fragile and reactive, defects (notches at grain boundaries or precipitates) are known to affect the yield data quality. The use of conformal coating directly on sharpened specimen has been proposed increase reduce background. However, date, these coatings have applied ex-situ mostly not uniformly. Here, we report controlled focused ion beam in-situ deposition thin metal film...