Two-dimensional bio-dynamite: Chemically exfoliated MoS2 (ceMoS2), a water-dispersible sheet-like material, is an efficient near-infrared (NIR) photothermal transducer. The superior bio-supramolecular properties of ceMoS2 and the ability this material to destroy biomolecular targets through transduction were studied (see picture).

Abstract Establishing processing–structure–property relationships for monolayer materials is crucial a range of applications spanning optics, catalysis, electronics and energy. Presently, molybdenum disulfide, promising catalyst artificial photosynthesis, considerable debate surrounds the structure/property its various allotropes. Here we unambiguously solve structure disulfide monolayers using high-resolution transmission electron microscopy supported by density functional theory show...

We report a method for creating stimuli-responsive biomaterials in which scanning nonlinear excitation is used to photocrosslink proteins at submicrometer 3D coordinates. Proteins with differing hydration properties can be combined achieve tunable volume changes that are rapid and reversible response chemical environment. Protein matrices having arbitrary topographies definable density gradients over micrometer dimensions provide the ability effect (<1 sec) precise mechanical manipulations...

Lithiation-exfoliation produces single to few-layered MoS2 and WS2 sheets dispersible in water. However, the process transforms them from pristine semiconducting 2H phase a distorted metallic phase. Recovery of properties typically involves heating chemically exfoliated at elevated temperatures. Therefore, it has been largely limited deposited on solid substrates. Here, we report dispersion high boiling point organic solvents enabled by surface functionalization controllable recovery their...

Zweidimensionales Biodynamit: Chemisch abgetragenes MoS2 (ceMoS2), ein in Wasser dispergierbares, blattförmiges Material, ist effizienter photothermischer Nah-Infrarot(NIR)-Energieumwandler. Die ausgezeichneten bio-supramolekularen Eigenschaften von ceMoS2 und die Fähigkeit dieses Materials, biomolekulare Zielstrukturen durch NIR-photothermische Transduktion zu zerstören, wurden untersucht (siehe Bild). As a service to our authors and readers, this journal provides supporting information...

Abstract The emerging molybdenum disulfide (MoS 2 ) offers intriguing possibilities for realizing a transformative new catalyst driving the hydrogen evolution reaction (HER). However, trade‐off between catalytic activity and long‐term stability represents formidable challenge has not been extensively addressed. This study reports that metastable temperature‐sensitive chemically exfoliated MoS (ce‐MoS can be made into electrochemically stable (5000 cycles), thermally robust (300 °C) while...

Abstract Lifetime-encoded materials are particularly attractive as optical tags, however examples rare and hindered in practical application by complex interrogation methods. Here, we demonstrate a design strategy towards multiplexed, lifetime-encoded tags via engineering intermetallic energy transfer family of heterometallic rare-earth metal-organic frameworks (MOFs). The MOFs derived from combination high-energy donor (Eu), low-energy acceptor (Yb) an optically inactive ion (Gd) with the...

We report the ability to modify microscopic 3D topographies within dissociated cultures, providing a means alter development of neurons as they extend neurites and establish interconnections. In this approach, multiphoton excitation is used focally excite noncytotoxic photosensitizers that promote protein crosslinking, such BSA, into matrices having feature sizes ≥250 nm. Barriers, growth lanes, pinning structures comprised crosslinked proteins are fabricated under conditions do not...

A strategy for rapidly printing three-dimensional (3D) microscopic replicas using multiphoton lithography directed by a dynamic electronic mask is reported. Morphological descriptions of 3D structures are encoded as stacks 2D slices created from tomographic and computer-designed instruction sets. In this manner, digital images serve input sequence reflective photomasks on micromirror device to direct replication structure. By scanning laser focus across the face intrinsically aligned masks,...

Tissue-derived cultured cells exhibit a remarkable range of morphological features in vitro, depending on phenotypic expression and environmental interactions. Translation these cellular architectures into inorganic materials would provide routes to generate hierarchical nanomaterials with stabilized structures functions. Here, we describe the fabrication cell/silica composites (CSCs) their conversion silica replicas using mammalian as scaffolds direct complex structure formation. Under...

Lead halide perovskites are increasingly considered for applications beyond photovoltaics, example, light emission and detection, where an ability to pattern prototype microscale geometries can facilitate the incorporation of this class materials into devices. Here we demonstrate laser direct write lead perovskites, a remarkably simple procedure that takes advantage inverse dependence between perovskite solubility temperature by using induce localized heating absorbing substrate. We...

Integration of catalytic nanostructured platinum and palladium within 3D microscale structures or fluidic environments is important for systems ranging from micropumps to microfluidic chemical reactors energy converters. We report a straightforward procedure fabricate patterns nanocrystalline using multiphoton lithography. These materials display excellent catalytic, electrical, electrochemical properties, we demonstrate high-resolution integration catalysts defined microenvironments...

Abstract Biomaterial properties that modulate T cell activation, growth, and differentiation are of significant interest in the field cellular immunotherapy manufacturing. In this work, a new platform technology allows for modulation various activation particle design parameters important polyclonal is presented. Artificial antigen presenting cells (aAPCs) successfully created using supported lipid bilayers on cell‐templated silica microparticles with defined membrane fluidity stimulating...

Liquid crystalline elastomers (LCEs) are anisotropic soft materials capable of large dimensional changes when subjected to a stimulus. The magnitude and directionality the stimuli-induced thermomechanical response is associated with alignment LCE. Recent reports detail preparation LCEs by additive manufacturing (AM) techniques, predominately using direct ink write printing. Another AM technique, digital light process (DLP) 3D printing, has generated significant interest as it affords LCE...

Soft material robots are uniquely suited to address engineering challenges in extreme environments new ways that traditional rigid robot embodiments cannot. flexibility, resistance brittle fracture, low thermal conductivity, biostability, and self-healing capabilities present solutions advantageous specific environmental conditions. In this review, we examine the requirements for building operating soft various environments, including within human body, underwater, outer space, search rescue...

Droplets far from equilibrium experience different compositions and local environments compared with bulk oil water phases at equilibrium. Understanding the pathways involved in emulsion progression towards is valuable for designing complex fluids many purposes including coatings, food, chemical separations, active matter, enhanced recovery. Here we report how microscale droplets, which partition nonionic surfactants also solubilize, can follow an unexpected pathway wherein a spherical...

We report a strategy to direct the multiphoton photocrosslinking (MPP) of proteins using mask objects or transparency-based masks. This approach enables rapid prototyping and generation microstructures functional surface gradients with arbitrary three-dimensional features. demonstrate use this transfer detailed shapes into biomaterial patterns fabricate microchambers capable trapping incubating single motile bacterium.

Nanocomposites offer unique capabilities of controlling thermal transport through the manipulation various structural aspects material. However, measurements properties these composites are often difficult, especially porous nanomaterials. Optical properties, although ideal due to noncontact nature, challenging large surface variability nanoporous structures. In this work, we use a vector-based algorithm solve for temperature change and heat transfer in which thin film subjected modulated...

We demonstrate the use time domain thermoreflectance (TDTR) to measure thermal conductivity of solid silica network aerogel thin-films. TDTR presents a unique experimental capability for measuring porous media due nanosecond aspect measurement. In short, is capable explicitly change in temperature with portion independently from pores or effective media. This makes ideal determining transport through film. networks an film that 10% solid, and same type has been calcined remove terminating...

An experimental investigation and the optical modeling of structural coloration produced from total internal reflection interference within 3D microstructures are described. Ray-tracing simulations coupled with color visualization spectral analysis techniques used to model, examine, rationalize iridescence generated for a range microgeometries, including hemicylinders truncated hemispheres, under varying illumination conditions. approach deconstruct observed complex far-field features into...

Liquid crystal elastomers (LCEs) are a class of active materials that can generate rapid, reversible mechanical actuation in response to external stimuli. Fabrication methods for LCEs have remained topic intense research interest recent years. One promising approach, termed 4D printing, combines the advantages 3D printing with responsive materials, such as LCEs, smart structures not only possess user-defined static shapes but also change their shape over time. To date, 4D-printed LCE been...

We report the use of an inexpensive, small, and "turn-key" Q-switched 532-nm Nd:YAG laser as a source for nonlinear, direct-write protein microfabrication. In this approach, microJoule pulses (pulse widths, ∼600 ps) are focused using high numerical aperture optics to submicrometer focal spots, creating instantaneous intensities great enough promote multiphoton excitation photosensitizer subsequent intermolecular cross-linking molecules. By scanning femtoliter volume through reagent solution,...