A cooktop appliance may include a top panel and a heating assembly mounted to the top panel. The heating assembly may include a first electric heating element and a second electric heating element. The first electric heating element may define a first heating zone in a horizontal plane to receive a cooking utensil thereon. The first electric heating element may have a set wattage density in the first heating zone. The second electric heating element may define a second heating zone in the horizontal plane to receive the cooking utensil thereon. The second heating zone may be horizontally spaced apart from the first heating zone. Moreover, the second electric heating element may have a set wattage density in the second heating zone. The set wattage density of the first electric heating element may be matched to the set wattage density of the second electric heating element.

Apparatus and methods are described for use with a smoking device that includes at least first and second electrodes. A capsule includes an absorbent material having a liquid material containing one or more active agents absorbed therein. A housing is disposed around the absorbent material, the housing being an electrical insulator, and the housing defining one or more lateral windows. Metallic foil surrounds the housing, the metallic foil being configured to be heated via resistive heating by the first electrode driving a current to the second electrode through the metallic foil, such as to vaporize liquid material within the absorbent material that is disposed at the one or more lateral windows. Other applications are also described.

A heater cable produces a substantially level voltage across its cross-section, providing a uniform and controllable thermal output along its length. The heater cable includes at least one center bus wire extending axially along a central axis of the heater cable, and at least one radial bus wire extending axially through the heating cable and positioned adjacent to the center bus wire. The heater cable further includes a thermally and electrically conductive interstitial material disposed around the at least one center bus wire and the at least one radial bus wire, and a jacket disposed about the interstitial material, the at least one center bus wire, and the at least one radial bus wire.

A heated glove having a glove structure and a heating assembly. The glove structure includes an inner body having an outer surface, an inner surface defining a cavity with an opening providing ingress into the cavity. The heating assembly has at least one heating zone. The heating zone has a conductive fabric portion, a heating mesh portion and a sensing assembly. The conductive fabric portion has a first circuit portion and a second circuit portion. The two portions have a first end across which a voltage differential can be placed, and second ends that are spaced apart from each other. The heating mesh portion extends between the second ends of the first and second circuit portions so as to be in electrical communication therewith. The sensing assembly has a temperature sensor. The temperature sensor is positioned proximate the heating mesh portion to determine a temperature of an area proximate thereto.

A heater having a helical electrical resistance heating wire connected to and coiled around a current return wire. The heater is employed in thermal conduction heater wells used for removing contaminants from soil, groundwater or rock.

A window heater for a vehicular camera or the like provides for a first heating element surrounding the field-of-view of the camera and a second heater element winding through the field-of-view of the camera to optimize heat delivery to the windshield without obstructing the camera's field-of-view.

Pre-fabric, flexible and thermally stable plastic sheets are loaded with carbon additives such as carbon nanotubes (CNTs), graphene, nano carbon fibers, graphite powders, or other carbon allotropes to adjust the resistivity of the sheets as desired for ice protection. These sheets are both conformable to desired surfaces and prevent the carbon debris migration issues in traditional CNT heaters.

Redundant heating systems include a plurality of heating circuits to heat a region. Heating circuits include a temperature sensor to sense a temperature of the region, a heating element, a temperature controller to provide power to the heating element based on the sensed temperature of the region, and a latching thermostat in series with the heating element. The latching thermostat consumes power supplied by the temperature controller to the heating element in response to a temperature of the latching thermostat reaching an open latch threshold temperature.

A device is described in which the shape of a resistive heater material is configured to provide rapid and strong heating of a small area. The resistive heating material is heated unevenly while efficiently using power.

Provided is a gene amplifying and detecting device. The gene amplifying and detecting device includes: a gene amplifying chip including a chamber formed therein; a reaction solution filled in the chamber and including a fluorescent material; a light source located at one side of the gene amplifying chip; a light detector located at the other side of the gene amplifying chip; and a graphene heater formed on an inner surface or outer surface of the gene amplifying chip so as to heat the reaction solution.