Category: Nanotech
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Revisiting semiconductor heat management through nanotechnology
by Uthpala N. Ekanayake and Malin Premaratne This is a thermal counterpart of a two-transistor gate. Each of the three transistor terminals comprise of two-level systems and they are interacting with baths with temperatures TL, TM, and TR. The substrate temperature is given by Tc. The heat currents across the transistor gate are represented by…
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2D phosphorus sets the pace in high-performance transistors
Mar 13, 2023 (Nanowerk News) A newly discovered blue form of ultrathin phosphorus — with electronic properties that can be tuned to enhance the injection of charge carriers (negatively and positively charged) into transistors — are set to push next-generation electronic devices forward. Two-dimensional semiconductors, such as graphene and transition metal dichalcogenides, are expected to…
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Understanding quantum mechanics with active particles
Mar 13, 2023 (Nanowerk News) The study of active particles is one of the fastest-growing areas of physics. With „active particles“ physicists refer to objects which move by themselves as a result of internal self-propulsion. These include living things such as bacteria and fish swimming, birds flying or humans walking around – as well as…
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Hybrid molecular graphene transistor as an operando and optoelectronic platform
Experimental design We first explore the use of graphene as a high-performance top contact electrode on a single junction showing that: (1) electron transfer between the Fc group in the Au/SC11Fc SAM and the gold electrode is achieved by applying an electrochemical voltage and consequently generating the electrochemical double layer through a Gr monolayer that…
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Conductive organic electrodes for flexible electronic devices
The most surprising result of conductivity enhancement of the PEDOT:PSS has been achieved by multiple spin coatings of the PEDOT:PSS and added Cu NP dispersion. The results are summarized in Table 1. Table 1 Samples with various processing steps and the resulting sheet resistance. The doubling of the PEDOT:PSS layer alone decreases the sheet resistance…
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Author Correction: Molecular bottlebrush prodrugs as mono- and triplex combination therapies for multiple myeloma
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.…
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Optimization of shadow evaporation and oxidation for reproducible quantum Josephson junction circuits
Shadow evaporation of Josephson junctions During electron-beam evaporation of Josephson junctions a diverging metal flow is formed (Fig. 1a). Its conical shape leads to nanoscale misalignment of junction electrode positions over a wafer and changes in electrode linear dimensions. One can imagine this effect as changing deposition angle over the wafer—from the center point of the…
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Controlling doping efficiency in organic semiconductors by tuning short-range overscreening
Short-range effects in integer charge-transfer complexes To understand the factors influencing the ICTC binding energy in disordered OS, VC, we first conduct a detailed analysis of a prototypical material combination NPB:F6TCNNQ (5 mol%). The molecular structures are depicted in Fig. 1a, b, full names of the molecules are provided in Supplementary Table 1. Specifically, we computed VC using…
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Mammalian-brain-inspired neuromorphic motion-cognition nerve achieves cross-modal perceptual enhancement
Bioinspired neuromorphic motion-cognition nerve Our bioinspired neuromorphic motion-cognition nerve is inspired by the cross-modal integration of sensory cues for motion and spatial perception. In macaques, self-motion in the environment invokes inertial stimuli in the inner-ear vestibular, and visual stimuli in the retina (Fig. 1a)6,25. The vestibular-inertia and visual-speed information are converted to spike trains carrying different…
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Interplay between hopping dimerization and quasi-periodicity on flux-driven circular current in an incommensurate Su–Schrieffer–Heeger ring
In what follows we present our numerical results for the AAH SSH quantum ring system under different input conditions, and explore the critical roles played by the hopping dimerization and AAH modulation on energy band spectrum, flux-driven circular current, and electronic localization phenomena. The results are arranged and discussed in different sub-sections. Depending on \(t_{1}\)…