The self-assembly of amphiphilic block copolymers in a gas–liquid microfluidic reactor produces variable, flow-directed micellar morphologies entirely different from off-chip equilibrium structures. A polystyrene-block-poly(acrylic acid) copolymer, which forms exclusively spheres off-chip, generates kinetic cylinders, Y-junctions, bilayers, and networks by mechanism collision–coalescence enabled strong localized on-chip shear fields. Variation the size relative amount nanostructures is...

We investigate the effects of variation in chemical conditions (solvent composition, water content, polymer concentration, and added salt) on morphologies formed by PS-b-PAA DMF/dioxane/water mixtures a two-phase gas-liquid segmented microfluidic reactor. The differences between off-chip on-chip self-assembly morphological trends for different are explained interplay top-down shear (coalescence breakup) bottom-up forces. Using morphology results, we construct content-solvent composition...

Cooperative emission of photons from an ensemble quantum dots (QDs) as superradiance can arise the electronically coupled QDs with a coherent emitting excited state. This contrasts superfluorescence (Dicke superradiance), where cooperative photon requires buildup coherence in incoherently via their coupling to common radiation mode. In perovskite QDs, has been rarely observed, unlike superfluorescence, due challenge QD electronic coupling. Here, we report very narrow linewidth (<5 meV) and...

The controlled self-assembly of large compound quantum dot micelles (QDCMs), consisting constituents polymer-stabilized dots (QDs) and amphiphilic polystyrene-b-poly(acrylic acid) stabilizing chains, in gas−liquid segmented microfluidic reactors is demonstrated. Self-assembly initiated by fast mixing water with the polymer via chaotic advection, as liquid plugs containing reactants move through a sinusoidal channel. resulting QDCMs are then processed within postformation channel, where...

We demonstrate a microfluidic approach to the production of block copolymer vesicles via flow-directed self-assembly in segmented gas-liquid device. Chemical conditions that favor spherical micelles bulk are found yield nearly pure population on chip-a transformation two full morphological steps-because coalescence mechanism enabled by high shear. The polymeric top-down control device enables new processing routes applications including drug delivery formulations lab-on-a-chip.

Soft lattices of metal halide perovskite (MHP) nanocrystals (NCs) are considered responsible for many their optical properties associated with excitons, which often distinct from other semiconductor NCs. Earlier studies MHP NCs upon compression revealed how structural changes and the resulting in such as bandgap can be induced at relatively low pressures. However, pressure response exciton transition itself remains poorly understood due to limitations inherent studying weakly or nonconfined...

The controlled self-assembly of polymer-stabilized quantum dots (QDs) into mesoscale aqueous spherical assemblies termed dot compound micelles (QDCMs) using a two-phase gas-segmented microfluidic reactor is described. Self-assembly initiated by the fast mixing water (∼1 s) with blend solution polystyrene-coated QDs and amphiphilic polystyrene-block-poly(acrylic acid) stabilizing chains via chaotic advection within liquid plugs moving through sinusoidal channel. Subsequent recirculating flow...

We investigate the loading efficiencies of two chemically distinct hydrophobic fluorescent probes, pyrene and naphthalene, for self-assembly polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles in gas-liquid segmented microfluidic reactors under different chemical flow conditions. On-chip are compared to values obtained via off-chip dropwise water addition a solution copolymer probe. On-chip, probe depend strongly on probe, initial solvent, content, rate. For naphthalene maximum on-chip...

In this paper, two transparent thin-film transistors (TFTs) with distinct channel designs were fabricated. The first was a single-channel TFT (SC-TFT) typical 50-nm-thick amorphous indium-gallium-zinc oxide (a-IGZO) layer, and the second sandwich composite-channel (CC-TFT) comprising three layers of 10-/30-/10-nm-thick Ti-doped GaZnO (GTZO)/a-IGZO/GTZO. CC-TFT, bottom GTZO thin film in composite exhibited highly smooth surface, serving as buffer template for superior IGZO layer growth. top...

Hot electrons play a crucial role in enhancing the efficiency of photon-to-current conversion or photocatalytic reactions. In semiconductor nanocrystals, energetic hot capable photoemission can be generated via upconversion process involving dopant-originated intermediate state, currently known only Mn-doped cadmium chalcogenide quantum dots. Here, we report that CsPbBr3 nanocrystals are an excellent platform for generating benefit from various desirable exciton properties and structural...

In this study, we proposed an electrolyte–insulator–semiconductor (EIS) device fabricating from Tb2O3 and Tb2Ti2O7 sensing films deposited on Si substrates through reactive sputtering. The effect of different annealing temperatures (600, 700, 800, 900°C) the structural surface properties was investigated. performance as pH sensors evaluated correlated with observed material properties. Compared film, EIS sensor using film that had been annealed at 900°C exhibited better performances,...

Characterization of reactive intermediates in C-H functionalization is challenging due to the fleeting lifetimes these species. Synthetic photochemistry provides a strategy generate post-turnover-limiting-step catalysis under cryogenic conditions that enable characterization. We have long-standing interest structure and reactivity Rh

In this letter, the structural properties and sensing performances of TiN films deposited on a n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> -type Si through reactive DC sputtering method with rapid thermal annealing at wide temperature range 200 °C to 800 were investigated for extended-gate field-effect transistor (EGFET) pH sensors. We used X-ray diffraction, photoelectron spectroscopy, atomic force microscopy study characteristics...

Abstract There is a growing interest in the application of photogenerated hot electrons semiconductor or metallic nanostructures such as photocatalysis and photovoltaics taking advantage their large excess kinetic energy long‐range transfer capability. Among various that can generate electrons, Mn‐doped semiconductors quantum dots (QDs) have shown unique ability to produce highly energetic via upconversion process. Compared plasmonic upconverted QDs possess several eV larger even...

Abstract This paper presents a new a‐Si:H gate driver circuit for large panel applications. Consisting of 12 TFTs and three capacitors, the proposed is fabricated measurement. The threshold voltage shift significantly reduced by reducing clock duty ratio. Experimental results indicate that operates stably under long‐term high temperature testing.

In this study we developed CeY

This paper presents a highly-integrated 3-8 GHz ultra-wideband (UWB) RF transmitter implemented in 1.2 V 0.13m CMOS technology. The integrates an analog baseband (PGAs and filter), IQ modulator, variable gain amplifier (VGA), differential-to-single-ended amplifier, power as well transmitted signal strength indicator (TSSI). VGA the TSSI cooperate to perform automatic transmit control. modulator off-chip digital circuit by FPGA carrier leakage calibration. Measured maximum output OP1 dB are...

(EIS) sensor using a high-κ CeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> sensing membrane, which was deposited on Si substrate through sputtering. We used X-ray diffraction and photoelectron spectroscopy to study the structural properties of these films that were annealed at various temperatures. The EIS 900 °C exhibited higher sensitivity 64.8 mV/pH, lower hysteresis voltage 1 mV, smaller drift rate 0.78 mV/h compared with other...

This experimental study precisely identifies the soil layer interface using sound signals collected during cone penetration tests (CPTs). Using high sensitivity of sensor at tip, this effectively increases accuracy in identifying location. Shiluo sand and Jhongda Lateritic were used to construct large-scale layers. An acoustic CPT was applied determine pressure its root mean square (RMS). The Fourier spectrum Hilbert-Huang transform (HHT) method utilized compared their ability analyze...

<italic>C</italic>–<italic>V</italic>curve response and reference voltage plotted as a function of pH for TbTi_xO_yEIS devices.