Highly efficient catalytic microtubular engines are synthesized rapidly and inexpensively using an electrochemical growth of bilayer polyaniline/platinum microtubes within the conically shaped pores a polycarbonate template membrane. These mass-produced only 8 μm long, self-propelled at ultrafast speed (of over 350 body lengths s(-1)), can operate in very low levels hydrogen peroxide fuel (down to 0.2%). The propulsion characteristics optimization these described, along with their operation...

Magnetically guided ultrasound-powered nanowire motors, functionalized with bioreceptors and a drug-loaded polymeric segment, are described for "capture transport" drug-delivery processes. These high-performance fuel-free motors display advanced capabilities functionalities, including magnetic guidance, coordinated aligned movement, cargo towing, capture isolation of biological targets, drug delivery, operation in real-life environmental media. The template-prepared three-segment Au–Ni–Au...

Fuel-free magnetically driven propulsion of flexible Au/Ag/Ni nanowires, with a gold 'head' and nickel 'tail', linked by partially dissolved weakened silver bridge, is described. The bridge facilitates the cyclic mechanical deformations under an external rotating magnetic field. Under such field segment starts to rotate, facilitating rotation at different amplitude, hence breaking system symmetry inducing movement. Forward ('pushing') backward ('pulling') powered locomotion precise On/Off...

We demonstrate the use of artificial nanomachines for effective interaction, capture, transport, and removal oil droplets. The simple nanomachine-enabled collection method is based on modifying microtube engines with a superhydrophobic layer able to adsorb by means its strong adhesion long chain self-assembled monolayers (SAMs) alkanethiols created rough gold outer surface device. resultant SAM-coated Au/Ni/PEDOT/Pt microsubmarine displays continuous interaction large droplets capable...

Threats of chemical and biological warfare agents (CBWA) represent a serious global concern require rapid efficient neutralization methods. We present highly effective micromotor strategy for photocatalytic degradation CBWA based on light-activated TiO2/Au/Mg microspheres that propel autonomously in natural water obviate the need external fuel, decontaminating reagent, or mechanical agitation. The activated micromotors generate reactive oxygen species responsible destruction cell membranes...

New template-based self-propelled gold/nickel/polyaniline/platinum (Au/Ni/PANI/Pt) microtubular engines, functionalized with the Concanavalin A (ConA) lectin bioreceptor, are shown to be extremely useful for rapid, real-time isolation of Escherichia coli (E. coli) bacteria from fuel-enhanced environmental, food, and clinical samples. These multifunctional microtube engines combine selective capture E. uptake polymeric drug-carrier particles provide an attractive motion-based theranostics...

A motion-based chemical sensing involving fuel-driven nanomotors is demonstrated. The new protocol relies on the use of an optical microscope for tracking changes in speed nanowire motors presence target analyte. Selective and sensitive measurements trace silver ions are illustrated based dramatic specific acceleration bimetal silver. Such nanomotor-based would lead to a wide range novel powerful biological protocols.

Self-propelled activated carbon-based Janus particle micromotors that display efficient locomotion in environmental matrices and offer effective ‘on-the-fly’ removal of wide range organic inorganic pollutants are described. The new bubble-propelled carbon rely on the asymmetric deposition a catalytic Pt patch surface microspheres. rough microsphere substrate results microporous structure to provide highly layer, which leads an bubble evolution propulsion at remarkable speeds over 500 μm/s....

This paper reports the first proof-of-concept of using catalytic nanoshuttles to pick up, transport, and release common drug carriers including biocompatible biodegradable polymeric particles liposomes. The rapid transport a wide size range drug-loaded (100 nm-3.0 μm) with speed approximately three orders magnitude faster than that transported by Brownian motion demonstrates high propulsion power nanoshuttles. nanoshuttles' navigation ability is illustrated through microchannel from pick-up...

Ultrasound (US)‐powered nanowire motors based on nanoporous gold segment are developed for increasing the drug loading capacity. The new highly porous nanomotors characterized with a tunable pore size, high surface area, and capacity payload. These prepared by template membrane deposition of silver‐gold alloy followed dealloying silver component. doxorubicin (DOX) is loaded within nanopores via electrostatic interactions an anionic polymeric coating. structure also facilitates near‐infrared...

We demonstrate an attractive nanomachine "capture and transport" target isolation strategy based on molecularly imprinted polymers (MIPs). MIP-based catalytic microtubular engines are prepared by electropolymerization of the outer polymeric layer in presence analyte (template). Tailor-made selective artificial recognition sites thus introduced into tubular microtransporters through complementary nanocavities layer. The new microtransporter concept is illustrated using bilayer...

Oxidative decontamination: An effective strategy for the oxidative neutralization of organophosphorus nerve agents that is based on self-propelled micromotors has been developed. The movement multiple motors across a peroxide-activated contaminated solution enhances decontamination efficiency compared with common processes chemical warfare agents.

Here we describe the first example of using self-propelled antibody-functionalized synthetic catalytic microengines for capturing and transporting target proteins between different reservoirs a lab-on-a-chip (LOC) device. A new polymer/Ni/Pt microtube engine, containing carboxy moieties on its mixed poly(3,4-ethylenedioxythiophene) (PEDOT)/COOH-PEDOT polymeric outermost layer, is further functionalized with antibody receptor to selectively recognize capture protein. The motor-based microchip...

We demonstrate a template electrosynthesis for large-scale low-cost preparation of remarkably small magnetically driven tailored-made helical nanoswimmers that display efficient propulsion behavior and hold considerable promise future miniature devices in the human body.

Abstract A synthetic hybrid nanomotor, which combines chemically powered propulsion and magnetically driven locomotion, is described. The new catalytic–magnetic nanomotor consists of a flexible multisegment Pt‐Au‐Ag flex ‐Ni nanowire, with the Pt‐Au Au‐Ag portions responsible for catalytic magnetic modes, respectively. experimental data theoretical considerations indicate that design only minimally compromises individual modes. Rapid convenient switching from to mode illustrated. resulting...

Fluid convection and mixing induced by bubble-propelled tubular microengines are characterized using passive microsphere tracers. Enhanced transport of the tracers micromotors, indicated their mean squared displacement (MSD), is dramatically larger than that observed in presence catalytic nanowires Janus particle motors. Bubble generation shown to play a dominant role effective fluid microengines. These findings further support potential for reagents accelerating reaction rates. The study...

The influence of the composition and electropolymerization conditions upon propulsion new template-prepared polymer-based bilayer microtubular microbots is described. effects different electropolymerized outer layers, including polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT), polyaniline (PANI), various inner catalytic metal surfaces (Ag, Pt, Au, Ni-Pt alloy), movement such microtubes are evaluated compared. Electropolymerization conditions, as monomer concentration medium (e.g....

Multifunctional reactive‐zeolite‐based micromotors have been developed and characterized toward effective rapid elimination of chemical biological threats. The incorporation silver ions (Ag + ) into aluminosilicate zeolite framework imparts several attractive functions, including strong binding to warfare agents (CWA) followed by degradation, enhanced antibacterial activity. new zeolite‐micromotors protocol thus combines the remarkable adsorption capacity zeolites efficient catalytic...

The propulsion of semiconductor diode nanowires under external AC electric field is described. Such fuel-free field-induced nanowire offers considerable promise for diverse technological applications.

A new nanomotor-based target isolation strategy, based on a "built-in" recognition capability, is presented. The concept relies poly(3-aminophenylboronic acid) (PAPBA)/Ni/Pt microtube engine coupling the selective monosaccharide of boronic acid-based outer polymeric layer with catalytic function inner platinum layer. PAPBA-based microrocket prepared by membrane-templated electropolymerization 3-aminophenylboronic acid monomer. resulting microengine itself provides without need for additional...

Integrating functional self-propelled Zinc micromotors are created by coup­ling electrodeposition with hard dual-templating synthesis. The concurrently possess four robust functions including a remarkably high loading capacity, combinatorial delivery of cargoes, autonomous release encapsulated payloads, and self-destruction. This concept could be expanded to simultaneous encapsulation various payloads for different functionalities such as therapy, diagnostics, imaging. As service our authors...

Highly ordered multi-layered three-dimensional (3D) graphene structures decorated with Pd, Pt and Au metal nanoparticles are prepared characterized. The ability to control the morphology, distribution size of on 3D support upon changing electro- electroless-deposition conditions is demonstrated. Tailor-made nanostructures, nanospike nanoparticle shapes, using electroless deposition techniques. nanoflowers Pd nanocubes obtained following electrodeposition onto support. patterns trends greatly...

A micromotor-based approach capable of rapid screening, detecting, isolating and damaging biothreat agent spore simulants from untreated samples is demonstrated.