Study of the room temperature molecular memory observed from a nanowell device
نویسندگان
چکیده
We tested the electrical characteristics of an oligo phenylene ethynylene OPE molecule with one nitro side group, an OPE with two nitro side groups, and an OPE with no nitro side groups in our nanowell device. The OPE molecule with nitro side group s showed switching behavior with memory as well as nonreversible negative differential resistance NDR . Current-voltage I-V characteristics showed a high conductivity state that switched to a low conductivity state upon the application of a threshold voltage. This low state held until the opposite threshold voltage was applied and the device switched back to the high conductivity state. The OPE with no nitro side groups did not show memory or NDR. In this work, we report the complete switching behavior observed including the device yield, average threshold voltage, and the average high to low current ratios. © 2005 American Vacuum Society. DOI: 10.1116/1.1931687
منابع مشابه
Nanowell device for the electrical characterization of metal–molecule–metal junctions
A nanowell device for the electrical characterization of metal–molecule–metal junctions was built using readily available processing tools and techniques. This device consisted of a nanoscale well, with a gold bottom, filled with a self-assembling monolayer of organic molecules, and capped with titanium and gold. Focused ion beam technology was used to fabricate the well with a width less than ...
متن کاملExperimental Study on the Magnetomechanical Characteristics of Ni-Mn-Ga Ferromagnetic Shape Memory Alloy Single Crystals
Magnetic shape memory properties of Ni-Mn-Ga single crystals were characterized by measurement of stress-induced martensite reorientation under constant magnetic fields. Also magnetic field-induced strain as a function of the applied magnetic field under different constant compressive stress levels has been investigated. All the experiments were performed at room temperature in which the sample...
متن کاملThe Electrical Behavior of Nitro Oligo(Phenylene Ethynylene)’s in Pure and Mixed Monolayers
In order to realize molecular electronic devices, molecules with electrically interesting behavior must be identified. One molecule that has potential for use in devices is an oligo(phenylene ethynylene) (OPE) molecule with nitro sidegroup(s). These “nitro” molecules have been reported to show electrical switching with memory behavior, as well as negative differential resistance (NDR). However,...
متن کاملEffects of molecular environments on the electrical switching with memory of nitro-containing OPEs
An oligo phenylene ethynylene OPE molecule with a nitro side group has exhibited electrical switching with memory and thus has potential for use in molecular electronic devices. However, different research groups have reported different electrical behaviors for this molecule. In addition to variations among test structures, differences in local molecular environments could be partially responsi...
متن کاملRoom Temperature Hydrogen Sensor Based on Single-Electron Tunneling Between Palladium Nanoparticles
In this paper, we present the results of single-electron tunneling in two-dimensional (2D) hexagonal closed packed arrays of palladium nanoparticles. After inspecting the emergence of Coulomb blockade phenomena, we demonstrate the possibilities of using these arrays as a single-electron tunneling based hydrogen sensor. We assumed arrays of palladium nanoparticles with diameters of 3.5 and 6...
متن کامل