The present disclosure generally relates to the field of resistive sensing. In particular, the present disclosure relates to a highly sensitive reduced graphene oxide-nickel (RGONi) composite based fast response temperature sensor. Aspects of the present disclosure provide a method for fabrication of a highly sensitive reduced graphene oxide-nickel (RGONi) composite-based temperature sensor. An aspect of the present disclosure provides a temperature sensor comprising: a substrate; and a composite film deposited onto said substrate, wherein the composite film comprises a reduced graphene oxide-nickel composite film. In an embodiment, the temperature sensor is cryo-compatible.

A dual-wall, vacuum-insulated container (30, 40) has an external wall (1), an internal wall (3) and there in-between a vacuum chamber (5), in which there is arranged a heat insulation device (2, 20). At least three temperature sensors (13, 13a, 13b, 14, 15) that are spaced apart from another recurringly register instantaneous temperatures (T.sub.1, T.sub.2, T.sub.2A, T.sub.2B, T.sub.3) of the container (30, 40). At least in some points there is calculated a temperature course using a heat insulation model on the basis of the construction and material characteristics of the container and the heat radiation resulting therefrom, which temperature course contains at least two of the temperatures (T.sub.1, T.sub.2, T.sub.2A, T.sub.2B, T.sub.3) registered. From the temperature course there is calculated a desired temperature value for the position of at least one further of the temperature sensors and compared with the actual temperature value actually registered by this temperature sensor. From the deviation between the desired temperature value and the actual temperature value there is detected a change of the heat insulation quality of the container.

A device and methods for use thereof in low-temperature thermal scanning microscopy, providing non-contact, non-invasive localized temperature and thermal conductivity measurements in nanometer scale ranges with a temperature resolution in the micro-Kelvin order. A superconductive cap mounted on the tip of an elongated support probe is electrically-connected to superconductive leads for carrying electrical current through the cap. The critical superconducting current of the leads is configured to be greater than the critical current supported by the cap, and the cap's critical current is configured to be a function of its temperature. Thus, the temperature of the cap is measured by measuring its critical superconducting current. In a related embodiment, driving a current greater than the critical current of the cap quenches the cap's superconductivity, and permits the cap to dissipate resistive heat into the sample being scanned. Scanning of the sample in this mode thus images its thermal conductivity patterns.

A method for locating at least one individual located remotely from a broadcast network. An analysis unit compares user profiles, dynamic locations stored in the communicator location database, and/or fixed locations entered into the analysis unit. A data set of at least one matching individualized locatee user profile is generated and the individualized locatee user profile is transmitted to the locator via the locator's communicator device.

A method and a structure for a low temperature thermometer is provided. The present invention may include a method of determining an ambient temperature is below a transition temperature, the method including measuring a magnetic field of a magnetic field source, where a superconducting film is positioned between a magnetic field sensor and the magnetic field source, where the superconducting film has the transition temperature, T.sub.c, based on determining the measured magnetic field approximately equals an expected magnetic field of the magnetic field source, outputting a first state of a switch, wherein the first state of the switch indicates the ambient temperature is above the T.sub.c, based on determining the measured magnetic field is less than the expected magnetic field, outputting a second state of the switch, where the second state of the switch indicates the ambient temperature is below the T.sub.c.

The invention relates to a device for monitoring the temperature of a cryopreserved biological sample, comprising a sample container (1) having a receiving space (2) for receiving a biological sample (6) and a cover (3) for closing the receiving space. The device also comprises a chamber arranged inside the sample container, in particular in the receiving space and/or in the cover, the interior (12; 22; 32; 42) of which is not fluidically connected to the receiving space (2) and is only partially filled with at least one indicator substance (7) having a melting temperature in the region between 20 C. and 140 C. The invention also relates to a method for monitoring the temperature of cryopreserved samples, comprising the following steps: providing a device (10; 20; 30; 40) for 12b temperature monitoring; freezing the indicator sub stance/s, wherein the at least one chamber can be placed in a first position during the freezing of the indicator substance/s and in a second position after the freezing and when a temperature of the indicator substance/s is below the melting temperature, in which position a melting of the indicator substance/s leads to an at least partial shift and/or change in shape of the chamber filling, with the influence of the force of gravity.

The invention relates to a method for monitoring the temperature of a cryopreserved biological sample. The invention also relates to a device for monitoring the temperature of a cryopreserved biological sample. The device (10) for monitoring the temperature of a cryopreserved biological sample comprises a sample container (1) having a receiving space (2) for receiving a biological sample (6). The device also comprises at least one chamber (11) having an interior that is not fluidically connected to the receiving space (2) and is only partially filled with an indicator substance (7) with a melting temperature in a region of 20 C. to 140 C. The chamber (11) has a barrier (13) that causes the indicator substance (7) to move into a second sub-region (12b) of the chamber (11) when the indicator substance (7) in a first sub-region (12a) of the chamber is in the fluid aggregate state.

The invention relates to a device for monitoring the temperature of a cryogenically preserved biological sample. The device (10) comprises a sample container (1) having a receptacle space (2) for accommodating a biological sample (6). The device further comprises at least one chamber (11), the interior (12) of which is not fluidically connected to the receptacle space, and which is at least partially filled with an indicator substance (7) having a boiling point or sublimation temperature in a range from 10 C. to 140 C. The chamber (11) further has at least one opening via which the indicator substance (7) can escape from the interior (12) of the chamber (11) upon exceeding its boiling point or sublimation point. The invention further relates to a method for monitoring the temperature of a cryogenically preserved biological sample.

The invention relates to a device for the temperature monitoring of a cryopreserved biological sample, comprising a sample container (in particular a cryotube) having a holding space for holding a biological sample and comprising at least one chamber, the interior of which is not fluidically connected to the holding space and is filled only partially with an indicator substance, the melting temperature of which lies in a range of 20 C. to 140 C. In particular, the chamber can be formed by a container that is detachably or pivotably fastened to the sample container. Alternatively, the chamber is formed by a double-walled slide-on part or the holding space of the sample container is double-walled, wherein an intermediate space between the inner wall and the outer wall is partially filled with the indicator substance.

The invention relates to a device for the temperature monitoring of a cryopreserved biological sample, comprising a sample container having an accommodating space (2) for accommodating the sample and comprising an indicating apparatus, which can be arranged on the outside of the sample container, for monitoring at least one temperature limit value. The indicating apparatus has at least one cavity, which is only partially filled with an indicating substance, the melting temperature of which lies in a range from 20 C. to 140 C. The indicating apparatus can be designed, in particular, as a cylindrical body, which can be fastened to a cryotube as a bottom part, or alternatively as a double-walled hollow cylinder, which can be slid onto an outer lateral surface of the cryotube. The indicating apparatus can also be fastened to a lateral outer wall of the sample container, e.g. as a hollow body that can be inserted into a sleeve or insertion pocket.