We report a normal-incident quantum well infrared photodetector (QWIP) strongly coupled with surface plasmon modes. A periodic hole array perforated in gold film was integrated In0.53Ga0.47As/InP QWIP to convert electromagnetic waves into waves, and excite the intersubband transition of carriers wells. The peak responsivity at ∼8 μm ∼7 A/W bias 0.7 V 78 K detectivity as high ∼7.4×1010 cm Hz1/2/W. full width half maximum response spectrum only ∼0.84 due narrow plasmonic resonance.

We report a low-cost and high-throughput process for the realization of two-dimensional arrays deep sub-wavelength features using silica polystyrene spheres. The pattern size in this method is weak function sphere size, hence excellent uniformity achievable. Also, period diameter holes pillars formed with technique can be controlled precisely independently. Moreover, patterns conventional negative positive photoresists, approach compatible wide range existing processing methods. Although we...

The ability of achieving strong quantum spatial correlations has helped the emergence information science. In contrast, how to achieve temporal (QTCs) remained as a long-standing challenge, thus hindering their applications in time-domain control. Here we experimentally demonstrate that by using parity-time (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mi mathvariant="script">PT</a:mi></a:math>)–symmetric single ion, conventional QTC limit known Lüders bound can be well surpassed...

Abstract The logical relationship between two previously defined “memory resistors” is revealed by constructing and experimentally demonstrating a three‐terminal memistor equivalent circuit using two‐terminal memristors. A technique then presented, nanoimprint lithography in combination with angle evaporation, to fabricate single nanoscale device footprint of 4F 2 , where F the minimum lithographic feature size, that can be operated as either lateral memristor or inside crossbar structure....

This is a brief review of recent work on the prospective hybrid CMOS/memristor circuits. Such hybrids combine flexibility, reliability and high functionality CMOS subsystem with very density nanoscale thin film resistance switching devices operating different physical principles. Simulation initial experimental results demonstrate that performance circuits for several important applications well beyond scaling limits conventional VLSI paradigm.

The Chinese giant salamander Andrias davidianus is the largest living amphibian. Most wild populations are threatened and some already extinct. government has declared species a Class II Protected Species, it listed as Critically Endangered in Red Book of Amphibians Reptiles Data Deficient on IUCN List. Populations have declined sharply both range number since 1950s because habitat loss fragmentation, hunting for commercial luxury food trade. Remaining appear to be distributed 12 areas...

We show by pump-probe spectroscopy that the optical response of a fishnet metamaterial can be modulated on femtosecond time scale. The modulation dynamics is dominated pump-induced changes in constituting dielectric medium, but strength dramatically enhanced through plasmon resonance. spectral responses provide understanding how resonance modified pump excitation. Our study suggests metamaterials used as high-speed amplitude/phase modulators with terahertz-bandwidth.

Abstract Large area periodic nanostructures exhibit unique optical and electronic properties have found many applications, such as photonic band-gap materials, high dense data storage, devices. We developed a maskless photolithography method—Nanosphere Photolithography (NSP)—to produce large of uniform nanopatterns in the photoresist utilizing silica micro-spheres to focus UV light. Here, we will extend idea fabricate metallic using NSP method. produced areas nanohole array perforated...

Similar to lithium‐ion batteries (LIBs), during the first charge/discharge process of capacitors (LICs), lithium‐intercalated anodes (e.g., silicon, graphite, and hard carbon) also exhibit irreversible lithium intercalation behaviors, such as formation a solid electrolyte interface (SEI), which will consume Li + in significantly reduce electrochemical performance system. Therefore, pre‐lithiation is an indispensable procedure for LICs. At present, commercial LICs mostly use metal source...

ABSTRACT An ultra‐wide stopband bandpass filter (BPF) using second‐order M‐type circuit is proposed by virtue of glass‐based integrated passive device (IPD) technology. The composed two first‐order circuits in series. consists a low‐pass (LPF) and high‐pass (HPF), each which can generate one transmission zero. zeros the low frequency band another high band, achieve rejection upper stopband. BPF covering 3.3–4.2 GHz fabricated with compact size 1.0 mm × 0.3 on IPD According to measurements,...

A compact dual-band dual-polarized log-periodic dipole array with a dimension of 160 ×160 ×60 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> for multiple-input-multiple-output (MIMO) WLAN applications is proposed. In this antenna, there are 12 antennas: six horizontal polarization and vertical polarization. order to achieve dual linear polarizations beam switching, antennas placed in sequential, rotating arrangement on substrate...

Abstract Fabrication of a large area periodic structures with deep sub-wavelength features is required in many applications such as solar cells, photonic crystals, and artificial kidneys. We present low-cost high-throughput process for realization 2D arrays using self-assembled monolayer hexagonally close packed (HCP) silica polystyrene microspheres. This method utilizes the microspheres super-lenses to fabricate nanohole pillar over areas on conventional positive negative photoresist, high...

Abgedreht: Ab-initio-VB- und -BLW-Methoden werden zur Abschätzung der Beiträge von Hyperkonjugation sowie sterischen Effekten Rotationsbarriere in Ethan verwendet. Die Ergebnisse belegen, dass das gestaffelte Konformer mit etwa 4 kJ mol−1 gegenüber ekliptischen Form stabilisiert (siehe Bild). Sterische Hinderung ist allerdings wichtigste Kriterium für die Bevorzugung gestaffelten Konformation Ethan. BLW=Block-localized wavefunction.

Microresonator-based optical frequency combs are broadband light sources consisting of equally spaced and coherent narrow lines, which extremely promising for applications in molecular spectroscopy sensing the mid-infrared (MIR) spectral region. There still great challenges exploring how to improve materials microresonator fabrication, extend bandwidth parametric combs, realize fully stabilized soliton MIR combs. Here, we present an effective scheme comb generation a <mml:math...

A recently proposed analytical equation of state (EOS) for the hard-core two-Yukawa fluids is tested against results Monte Carlo (MC) simulation in six cases. One range parameter potential taken as 1.8 or 2.8647, and another 2.0, 4.0, 8.0, 13.5485. Attractive repulsive dominant cases outside core are all considered. The conditions selected ensure that, interaction between two particles attractive at enough long distance. Some can give similar that charged colloid particles. fluid with...

We have designed a high performance transparent conductor using silver and aluminium stacked films perforated with hexagonally periodic subwavelength holes which are close to the lattice period. A broadband (λ of 400–800 nm) enhanced transmission is achieved by strong coupling surface plasmons propagating modes through holes. Optical electrical modeling predict good combination transparency sheet resistance (e.g. ∼85% T ∼2.4 Ω sq−1). Preliminary characterization results samples made via...

Mineralized collagen scaffold is one of the best choices for bone defects treatment, but weak mechanical strength main factor restricting its development. Recent studies demonstrated that despite being a fundamental form stimulation in human activities, impact cyclic compressive stress on mineralization remains unclear, with even less known about dynamic mechanism. This study employed to investigate effect mineralization. The findings revealed strain promotes by facilitating increased...

With the continuous development of electronic products toward high density and small size, size interconnecting solder joints also continues to decrease. Under normal service conditions, microsolder will be subjected multiple loads at same time, which in turn cause many reliability problems package structure. This article focuses on growth pattern intermetallic compounds (IMCs) during hot-press bonding analyzes its effect shear strength creep properties copper pillar microbumps. First, with...

The authors report a low-cost and high-throughput method—nanosphere photolithography, for generating periodic subwavelength holes in metals/dielectrics. By combining the self-assembled focus properties of micro-/nanospheres, utilized sphere arrays as lenses to produce large areas nanopillars with strong undercut negative photoresist. Using lift-off photoresist, demonstrate area uniform nanoholes small 50 nm diameter at bottom ∼160 thick metal. also show that nanohole can be generated...

Vapor-liquid-solid (VLS) grown nanowires (NWs) typically grow in [Formula: see text] directions. In this work, using guiding structures, we effectively Si NWs with diameters between 20 and 100 nm both [001] <110> directions by the NW growth SiO(2) surfaces. Using one structure, demonstrate substrate plane, against buried oxide layer of a standard, (001) silicon-on-insulator wafer. other perpendicular to substrate. We show that VLS mechanism is same as unconstrained growth, still growing...