An unclonable, fingerprint-mimicking anti-counterfeiting strategy is presented that encrypts polymeric particles with randomly generated silica film wrinkles. The wrinkle codes are as highly unique human fingerprints and technically irreproducible. Superior to previous physical unclonable functions, tunable on demand generable various geometries. Reliable authentication of real-world products have these microfingerprints demonstrated using optical decoding methods. As a service our authors...

A QR-coded microtaggant for the anti-counterfeiting of drugs is proposed that can provide high capacity and error-correction capability. It fabricated lithographically in a microfluidic channel with special consideration island patterns QR Code. The incorporated drug capsule (“on-dose authentication”) be read by simple smartphone Code reader application when removed from washed free drug.

Magnetochromatic microspheres have been fabricated through instant assembly of superparamagnetic (SPM) colloidal particles inside emulsion droplets UV curable resin followed by an immediate curing process to polymerize the and fix ordered structures. When dispersed in liquid droplets, Fe3O4@SiO2 core/shell self-organize under balanced interaction repulsive attractive forces form one-dimensional chains, each which contains periodically arranged diffracting visible light displaying...

The capability of assembling nanoparticles into a desired ordered pattern is key to realize novel devices which are based not only on the unique properties but also arrangements nanoparticles. While two-dimensional arrays have been successfully demonstrated by various techniques, controlled way building three-dimensional (3D) nanoparticle structures remains challenging. We report that variety 3D can be formed in ion-induced focusing, electrical scaffold, and antenna effects from charged...

Dynamic synthesis of magnetoresponsive structural-colored microspheres is demonstrated by combining an optofluidic approach with a magnetic property tuning method. The strategy allows for the magnetochromatic controlled and heterogeneous optical properties in single environment. Orientation-dependent color diffraction utilized to form structural patterns using patterned magnet. Detailed facts importance specialist readers are published as "Supporting Information". Such documents...

Although droplet microfludics is a promising technology for handling number of liquids single type analyte, it has limitations in thousands different types analytes multiplex assay. Here, we present novel "liquid-capped encoded microcapsule", which applicable to various liquid format assays. Various drops can be graphically and arrayed without repeated dispensing processes, evaporation, the risk cross-contamination. Millions nanoliter-scale are encapsulated within microcapsules...

We present a simple and high-throughput method for fabricating free-floating hydrogel cell microcarriers using single exposure UV patterning. also demonstrate magnetic manipulation of the nanoparticle-embedded structure an active agitation solution exchange.

Understanding tissue engineering using a bottom-up approach has been hindered by technical limitations because no platform can demonstrate the controlled formation of heterogeneous population cells in microscale. Here, we hierarchical shape-by-shape assembly virus-laden particles into larger ones to transfect two different genes on seeded cells. We show that smaller daughter with sizes and shapes be assembled matching indentations parent shapes. Then, transfected gene-transfecting viruses,...

Complicated functional microparticles with complex nanostructured compartments have been synthesized from emulsion templates by lithographic compartment allocations. Our 'top-down–bottom-up' hybrid method will provide additional material engineering capability for the synthesis of advanced microparticles.

The parallelization of microfluidic cytometry is expected to lead considerably enhanced throughput enabling point-of-care diagnosis. In this article, the development a potentiometric multichannel cytometer presented. Parallelized channels sharing fluid path inevitably suffer from interchannel signal crosstalk that results electrical coupling within channel network. By employing three planar electrodes single detection channel, we electrically decoupled each unit, thereby parallel analysis by...

We have developed magnetically controllable gold nanoparticles by synthesizing superparamagnetic <TEX>$Fe_3O_4$</TEX> core/gold shell nanoparticles. The core/shell particles the capability of forming 1D chains in presence an external magnetic field. Here we demonstrate dynamic and reversible self-assembly chain structures aqueous solution without any templates or physical chemical attachment. spatial configuration can be arbitrarily manipulated controlling direction a This technique provide...

Phage display is one of the most frequently used platform technologies utilized to screen and select therapeutic antibodies, has contributed development more than 10 antibodies in clinic. Despite advantages like efficiency low cost, it intrinsic technical limitations, such as asymmetrical amplification library after each round biopanning, which regarded a reason for yielding very limited number antigen binders. In this study, we developed high-throughput single-clonal screening system...

Abstract This paper is the first to report a simple and cost‐effective method for modularizing an array of gallium arsenide (GaAs) solar cells on plastic circuit board using fluidic self‐assembly (FSA) technology combination thereof with polymer lens implement micro‐concentrator photovoltaics (micro‐CPV). Using FSA low‐melting‐point solder, GaAs are successfully self‐assembled into 2D in 1 min. Micro‐CPVs consisting 36 256 manufactured by aligning concentrator fabricated drop‐on‐demand...

W. Park, S. Kwon, and co-workers discuss biomimetic microfingerprints for anti-counterfeiting strategies on page 2083. In the described strategy, polymeric particles are encrypted with randomly generated silica film wrinkles, which act as codes that unique human fingerprints. These tunable various geometries.

The cover picture shows a microfluidic channel and the magnetochromatic microspheres it generates. From single-synthesis environment, structural-colored are synthesized by combining an optofluidic approach with magnetic property tuning method. main image features dynamic color capability of method; differently colored generated in single channel, can be changed real-time during synthesis process. produced controlled heterogeneous optical properties. They comprise 1D chain arrangements...

Large scale, tunable structural color patterning is demonstrated using magnetochromatic microspheres which involve 1D chain-like ordered structure of superparamagnetic nanoparticle under a patterned external magnetic field. Also single materials based simple microsphere fabrication method presented

A lithographically encoded microtaggant for the anti-counterfeiting of drugs is presented by Wook Park, Sunghoon Kwon, and co-workers on page 5924. The utilizes high-capacity error-correctable features Quick Response (QR) code to store large amounts drug information. image illustrates incorporation QR-coded microtaggants in a capsule as demonstration on-dose authentication (ODA). Try reading with your smartphone!

We present a novel method to fabricate photonic crystal for visible light control and demonstrate high resolution patterning of multiple structural colors using single material. The material, termed as "M-Ink", whose color is magnetically tunable lithographically fixable, developed. By combining material system specially designed instrument, we produce patterns with arbitrary spatial arrangements

We present optofluidic synthesis of magnetic microparticles showing structural color property. also demonstrate fabrication complex having multiple subdomains with different patterns.

Rapid separation and 3D reaction-2D reading of color shape encoded magnetic microparticles are demonstrated using 1D chain structure nanoparticles involved in the microparticle. Also single material based simple particle fabrication method is presented.