In this paper, an in-situ microfluidic control unit (MCU) was designed and applied in a hydrothermal synthesis process, which provides an easy way to localize liquid-phase reaction and realize selective synthesis and direct growth of nanostructures as well as their morphology, all in a low-temperature and atmospheric environment. The morphology was controlled through controlling the amount of a...

We demonstrate passive mode locking of solid-state lasers by saturable absorbers based on carbon nanotubes (CNT). These novel absorbers are fabricated by spin-coating a polymer doped with CNTs onto commercial dielectric laser-mirrors. We obtain broadband artificial saturable absorber mirrors with ultrafast recovery times without the use of epitaxial growth techniques and the well-established sp...

We demonstrate the improvement of an indium tin oxide anode contact to an organic light emitting device via oxygen plasma treatment. Enhanced hole-injection efficiency improves dramatically the performance of single-layer doped-polymer devices: the drive voltage drops from .20 to ,10 V, the external electroluminescence quantum efficiency ~backside emission only! increases by a factor of 4 ~from...

UNLABELLED Perovskite solar cells are becoming one of the leading technologies to reduce our dependency on traditional power sources. However, the frequently used component poly(3,4-ethylenedioxythiophene) polystyrene sulfonate ( PEDOT PSS) has several shortcomings, such as an easily corroded indium-tin-oxide (ITO) interface at elevated temperatures and induced electrical inhomogeneity. Herei...

This paper describes the development of notch filters and dichroic beam-splitters, the latter to be a visible 2-channel WDM Multiplexer/Demultiplexer (MUX/DEMUX). Both discrete devices are intended to be used on very short-haul links based on Poly-Methyl-Methacrylate (PMMA) Polymer Optical Fibres (POFs). The filters were built from commercially available multilayer dielectric stack and also fro...

Resistive random access memory (RRAM) is one of the most promising nonvolatile memory technologies because of its high potential to replace traditional charge-based memory, which is approaching its scaling limit. To fully realize the potential of the RRAM, it can be important to develop a unique device with current self-rectification, which provides a solution to suppress sneak current in cross...

We report flicker noise measurements combined with deep-level transient spectroscopy of the doped and undoped channel GaN/AlGaN heterostructure field-effect transistors. The lowtemperature noise spectra for the doped devices show clear generation-recombination peaks. The value of the activation energy extracted from these noise peaks is consistent with the activation energies measured using dee...

Uniform polymer microbeads with highly loaded quantum dots (QDs) are produced using high-throughput coherent jet breakup of a biocompatible poly(ethylene glycol) diacrylate (PEGDA) prepolymer resin, followed by in-line photopolymerization. A spiraling and gradually widening channel enables maximum absorption of radiated UV light for the in-line photopolymerization without coalescence and cloggi...