Two-terminal electronic devices that exhibit voltage-controlled threshold switching (TS) via negative differential resistance (NDR) are important for many emerging applications. Pickett and Williams developed what has become a well-known physics-based model nanoscale exhibiting NDR due to reversible insulator-metal phase (Mott) transition. The Mott memristor couples changes in electrical Joule ...

An electrically bistable device has been fabricated based on poly(N-vinylcarbazole) (PVK)-silver sulfide (Ag2S) composite films using a simple spin-coating method. Current-voltage (I-V) characteristics of the as-fabricated devices exhibit a typical electrical bistability and negative differential resistance (NDR) effect. The NDR effect can be tuned by varying the positive charging voltage and t...

The transport characterization of self-assembled monolayers (SAMs) based on the closed and open-shell forms of a fully conjugated polychlorotrimethylphenyl (PTM) derivative hybridized with the gold substrate reveals that both systems exhibit negative differential resistance (NDR) in their I-V curves which was attributed to similar resonant tunnelling with unoccupied molecular orbitals. This wor...

106204-9494 IJECS-IJENS © August 2010 IJENS I J E N S  Abstract— Superlattice emitter resonant tunneling bipolar transistor (SE-RTBT) is facing problem due to thermal transfer of electrons over barrier which causes diminishing negative differential resistance (NDR) effect. Therefore resonant tunneling diode (RTD) with higher quasibound state energy causes transfer of electrons by RT effect ins...

The National Dose Registry (NDR) of Canada is a unique resource for a direct estimation of the potential health risks associated with low doses of ionizing radiation. This is the largest national occupational radiation exposure database, comprising records for about 600,000 nuclear, industrial, medical and dental workers. An analysis of the NDR data based on a cohort of about 200,000 workers fi...

Abstract The transport properties of molecular wire comprising B 40 fullerene are investigated by employing density functional theory (DFT) and non-equilibrium green’s function (NEGF) methodology. quantum is evaluated calculating the states, transmission spectra at various bias voltages, energy spectra, HOMO-LUMO gap, current–voltage curve, pathways. In context to its properties, results show t...

In this study, the negative differential resistance (NDR) phenomenon in two-terminal devices composed of pyrogallol-formaldehyde/ZrO2 composite materials is investigated. It demonstrated that NDR caused by electrothermal effects, which can be observed through dependence on both voltage and temperature. Additionally, it showed peak current peak/valley voltages effectively modulated using electri...

We study the problem of identifying set active variables, termed in literature as variable selection or multiple hypothesis testing, depending on pursued criteria. For a general robust setting non-normal, possibly dependent observations and generalized notion set, we propose procedure that is used simultaneously for both tasks, testing. The based risk hull minimization method, but can also be o...