摘要:
A memristor with a channel region in thermal equilibrium with a containing region. The channel region has a variable concentration of mobile ions. The containing region, formed of stoichiometric crystalline material, contains and is in thermal equilibrium with the channel region.
摘要:
Embodiments of the present invention are directed to nanoscale memristor devices that provide nonvolatile memristive switching. In one embodiment, a memristor device includes an active region, a first electrode disposed on a first surface of the active region, and a second electrode disposed on a second surface of the active region, the second surface opposite the first surface. The first electrode is configured with a smaller width than the active region in a first direction, and the second electrode is configured with a larger width than the active region in a second direction. Application of a voltage to at least one of the electrodes produces an electric field across a sub-region within the active region between the first electrode and the second electrode.
摘要:
Root canal abutment devices and methods which facilitate the adjustment or removal of an oral appliance, e.g., a crown or bridge, from a reconfigurable abutment assembly are described. The adjustable abutment assembly may be secured within a pulp chamber of a pre-existing tooth. The abutment assembly has a projecting abutment portion with one or more shape memory alloy sleeves or plates or elements extending along the abutment. Each of the sleeves has a length with at least one curved or arcuate portion. Energy may be applied to the elements such that the arcuate portion flattens to allow for the oral appliance to be placed thereupon while removal of the energy allows the elements to reconfigure into its curved configuration thereby locking the oral appliance to the abutment. Removal of the oral appliance may be effected by reapplication of energy to the elements.
摘要:
Memristive elements are provided that include an active region disposed between a first electrode and a second electrode. The active region includes an switching layer of a first metal oxide and a conductive layer of a second metal oxide, where a metal on of the first metal oxide differs from a metal ion of the second metal oxide. The memristive element exhibits a nonlinear current-voltage characteristic in the low resistance state based on the oxide hetero-junction between the first metal oxide and the second metal oxide. Multilayer structures that include the memristive elements also are provided.
摘要:
A nonlinear memristor includes a bottom electrode, a top electrode, and an insulator layer between the bottom electrode and the top electrode. The insulator layer comprises a metal oxide. The nonlinear memristor further includes a switching channel within the insulator layer, extending from the bottom electrode toward the top electrode, and a nano-cap layer of a metal-insulator-transition material between the switching channel and the top electrode. The top electrode comprises the same metal as the metal in the metal-insulator-transition material.
摘要:
A memristor array includes a lower layer of crossbars, upper layer of crossbars intersecting the lower layer of crossbars, memristor cells interposed between intersecting crossbars, and pores separating adjacent memristor cells. A method forming a memristor array is also provided.
摘要:
Various embodiments of the present invention are directed to nanoscale electronic devices that provide nonvolatile memristive switching. In one aspect, a two-terminal device (600) comprises a first electrode (602), a second electrode (604), and an active region (606) disposed between the first electrode and the second electrode. The active region includes a mobile dopant (608), and a fast drift ionic species (610). The fast drift ionic species drifts into a diode-like electrode/active region interface temporarily increasing conductance across the interface when a write voltage is applied to the two-terminal device to switch the device conductance.
摘要:
A memristor includes a first electrode formed of a first metal, a second electrode formed of a second material, wherein the second material comprises a different material from the first metal, and a switching layer positioned between the first electrode and the second electrode. The switching layer is formed of a composition of a first material comprising the first metal and a second nonmetal material, in which the switching layer is in direct contact with the first electrode and in which at least one conduction channel is configured to be formed in the switching layer from an interaction between the first metal and the second nonmetal material.
摘要:
A memelectronic device may have a first and a second electrode spaced apart by a plurality of materials. A first material may have a memory characteristic exhibited by the first material maintaining a magnitude of an electrically controlled physical property after discontinuing an electrical stimulus on the first material. A second material may have an auxiliary characteristic.
摘要:
Methods are disclosed for treating or inhibiting an autoimmune disease in a subject. In some embodiments, the disclosed methods include administering to the subject a therapeutically effective amount of one or more Major Histocompatibility Complex (MHC) molecules including covalently linked first, second and third domains; wherein the first domain is an MHC class II β1 domain and the second domain is an MHC class II α1 domain, wherein the amino terminus of the α1 domain is covalently linked to the carboxy terminus of the β1 domain; or wherein the first domain is an MHC class I α1 domain and the second domain is an MHC class I α2 domain, wherein the amino terminus of the α2 domain is covalently linked to the carboxy terminus of the α1 domain; and wherein the third domain is covalently linked to the first domain and comprises an antigen associated with the autoimmune disorder. The method also includes administering a therapeutically effective amount of one or more antibodies that bind to B cells, for example an antibody that specifically binds CD20. In specific non-limiting examples, the autoimmune disease is multiple sclerosis or rheumatoid arthritis.