Materials Literature
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Until recent years, dimensional scaling allowed for the fabrication of smaller and faster devices with increasing capacity. Currently, the limited area and the high density of the features in such devices have made self-aligned contacts/vias (SAC or SAV) a standard technique to overcome the decreasing distance between…
Quantum Measurement The quantum properties of the nitrogen vacancy (NV) defect in diamond can be used as an atomic compass needle that is sensitive to tiny variations in magnetic field. Schmitt et al. and Boss et al. successfully enhanced this sensitivity by several orders of magnitude (see the Perspective by Jordan).…
It is well known in metamaterials that local resonance and hybridization phenomena dramatically influence the shape of dispersion curves; the metasurface created by a cluster of resonators, subwavelength rods, atop an elastic surface being an exemplar with these features. On this metasurface, band-gaps, slow or fast w…
The raw data used for preparation of the figures in the main text and supplementary information of the aforementioned manuscript is enclosed. More details are enclosed in the readme file, data files for each figure are located in the respective folder
Abstract Human Kif15 is a tetrameric kinesin-12 that contributes critically to bipolar spindle assembly in eukaryotes. Here we examine its single molecule mechanics. Under hindering loads, Kif15 steps predominantly towards microtubule plus ends, with its forestep:backstep ratio decreasing exponentially with load and s…
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A low temperature thin film electrical resistivity measurement system was implemented by employing a closed cycle helium cryogenic system, a temperature control system and a resistivity measurement system. In order to verify the implemented system, six Al contacts were deposited along each diagonal on a square low dop…
We report a theoretical investigation of extremely high field transport in an emerging widebandgap material $\beta-Ga_2O_3$ from first principles. The signature high-field effect explored here is impact ionization. Interaction between a ground-state electron and an excited electron is computed from the matrix elements…
Comptes Rendus Chimie - In Press.Proof corrected by the author Available online since jeudi 25 mai 2017
In condensed matter physics, the term implies the violation of the separate number conservation laws of Weyl fermions of different chiralities in the presence of parallel electric and magnetic fields. One effect of chiral anomaly in the recently discovered Dirac and Weyl semimetals is a positive longitudinal magnetoco…
α-Chymotrypsin (α-CT) and trypsin are important components of the enzymatic barrier. They could degrade the therapeutic proteins and peptides, inhibit their activity consequently, and thereby reduce their oral bioavailability. Acidic agents, as one type of indirect protease inhibitors, have shown proof of concept in c…
Directed self-assembly of block copolymers is considered one of the candidates to fulfill the requirements of the next technological nodes [1,2]. Polymer domains are aligned by using a chemical and/or a topographical pre-pattern in which preferential surfaces to one of the two blocks or neutral wetting areas are creat…
Graphene When an electron completes a cycle around the Dirac point (a particular location in graphene's electronic structure), the phase of its wave function changes by π. This so-called Berry phase is tricky to observe directly in solid-state measurements. Ghahari et al. built a graphene nanostructure consisting of a…
We have investigated the energetic stability and the electronic properties of metal-organic topological insulators bilayers (BLs), $(MC_4S_4)_3$-BL, with M=Ni and Pt, using first-principles calculations and tight-binding model. Our findings show that $(MC_4S_4)_3$-BL is an appealing platform to perform electronic band…
Directed self-assembly (DSA) of block copolymers (BCPs) has been expected to become one of the most promising next generation lithography candidates for sub-15 nm line patterning and sub-20 nm contact hole patterning. In order to provide the DSA lithography to practical use in advanced semiconductor device manufacturi…
The effect of pendant side groups on two-photon absorption cross-section in a number of soluble fluorescent polythiophenes was investigated. Different side groups lead to different planarity and conformation of the polymer. As the side-group-induced planarity of the polymer chain increases, the two-photon absorption c…
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The semiconductor industry is evaluating a variety of approaches for the cost efficient production of future processing and memory generations. Amongst the technologies being explored are multiple patterning steps, extreme ultraviolet (EUV) lithography, multiple-beam electron beam lithography and the directed self-ass…
Esse trabalho apresenta resultados de modificações estruturais, caracterizações e aplicações de derivados de quitosana como carreadores de fármacos.Derivados anfifílicos de quitosana, contendo grupos hidrofílicos e grupos hidrofóbicos, foram caracterizados por técnicas de espectroscopia de ressonância magnética nuclea…
针对日益严重的铜离子污染问题，以化学浆纤维素为原料，通过氨基酸接枝修饰2，2，6，6-四甲基哌啶氧自由基（TEMPO）氧化体系氧化的纤维素，制备出一种新型吸附剂，并采用灵敏简便的分光光度法研究改性对铜离子的吸附效果。结果表明，氨基酸修饰纤维素（AMC）与TEMPO氧化纤维素（TOC）相比，对铜离子的吸附效果有不同程度的提升，其中组氨酸改性的吸附效果最好，低浓度时吸附率可以高达97%。随着浓度增大，吸附率下降，但是吸附量增大，当吸附200 mg/L的Cu2+溶液时，吸附量可达47 mg/g。此外，研究了不同条件下AMC对Cu2+的吸附情况，包括AMC投加量、初始浓度、pH值等。结果表明，吸附过程的吸附模型符合Langmuir等温模型…