A carbon nanotube (CNT) cable includes: a pair of plated twisted wires, each wire comprising one or more sub-cores, at least one sub-core comprising CNT yarn; a dielectric surrounding the plated twisted wires; and an electrical layer surrounding the dielectric, the electrical layer configured to shield the CNT cable. A method for making a CNT cable includes: controlling a deposition rate, depositing plating so as to surround a pair of wires, each wire comprising one or more sub-cores, at least one sub-core comprising CNT yarn; twisting the plated wires together; and surrounding the plated twisted wires with an electrical layer configured to shield the plated twisted wires, thereby creating the CNT cable.

An electrical cable includes a conductor assembly having a first conductor, a second conductor and an insulator surrounding the first conductor and the second conductor. The insulator has an outer surface having an RMS roughness of less than 1.0 micrometers. A cable shield provides electrical shielding for the first and second conductors and has a metallized conductive layer on the outer surface of the insulator. A method of manufacturing an electrical cable includes feeding a first conductor and a second conductor to a core extruder, extruding an insulator around the first and second conductors at the core extruder, heating an outer surface of the insulator to lower a roughness profile of the outer surface, and directly apply a conductive layer to the outer surface of the insulator.

Provided is a differential signal transmission cable, a multi-core cable, and a method of manufacturing a differential signal transmission cable that can suppress an increase in differential-to-common mode conversion quantity. The differential signal transmission cable includes two signal lines, an insulation layer covering a periphery of the two signal lines, and a plating layer covering the insulation layer. Differential-to-common mode conversion quantity of the differential signal transmission cable has a maximum value of 26 dB or less, in a frequency band of 50 GHz or less. In the method of manufacturing a differential signal transmission cable, dry ice blasting is performed on an outer peripheral surface of the insulation layer, and then corona discharge exposure is performed on the outer peripheral surface.

Provided is a method for regulating a thermal boundary conductance between a metal and an insulator, including: arranging a metal on a surface of an insulator, a contact surface between the metal and the insulator being a boundary between the metal and the insulator; and the insulator including a ferroelectric, a piezoelectric, or a pyroelectric; applying an external electric field or stress to the ferroelectric, and adjusting a magnitude of the external electric field or stress, or an included angle between a direction of the external electric field or stress with the boundary to regulate the thermal boundary conductance; or applying a stress to the piezoelectric, and adjusting a magnitude of the stress, or an included angle between a direction of the stress with the boundary to regulate the thermal boundary conductancer; or adjusting a temperature of the pyroelectric to regulate the thermal boundary conductance.

An example method for connectorizing a superconducting cable is described herein. The method can include depositing an oxide layer on a surface of a superconducting cable, electroplating a metal layer on the surface of the superconducting cable, and soldering a connector to the metal layer coated on the surface of the superconducting cable. The oxide layer allows the metal layer to adhere to the surface of the superconducting cable.

An example method for connectorizing a superconducting cable is described herein. The method can include depositing an oxide layer on a surface of a superconducting cable using a first electrolytic cell, electroplating a metal layer on the surface of the oxide layer of the superconducting cable using a second electrolytic cell, and soldering a connector to the metal layer coated on the surface of the superconducting cable. The oxide layer allows the metal layer to adhere to the surface of the superconducting cable.

A signal transmission cable includes a signal line, an insulation layer covering the signal line, and a shield layer covering the insulation layer. A first oxygen amount A.sub.1 on an outer peripheral surface of the insulation layer is 1.2 times or greater than a second oxygen amount A.sub.2 inside the insulation layer, or a contact angle on the outer peripheral surface the insulation layer is 130 or less, or an adhesion-wetting surface energy on the outer peripheral surface the insulation layer is 27 mJ/m.sup.2 or greater, or a first amount of a hydroxy group on the outer peripheral surface of the insulation layer is greater than a second amount of a hydroxy group inside the insulation layer.

A differential signal transmission cable includes: an insulating layer that extends in a longitudinal direction of the differential signal transmission cable; a pair of signal lines that extend in the longitudinal direction and are embedded in the insulating layer; and a shield layer that covers an outer peripheral surface of the insulating layer. The shield layer includes an electroless plating layer containing copper and alloy elements. The types and contents of the alloy elements are selected such that a tensile stress acts on the shield layer.

A carbon nanotube (CNT) cable includes: a pair of plated twisted wires, each wire comprising one or more sub-cores, at least one sub-core comprising CNT yarn; a dielectric surrounding the plated twisted wires; and an electrical layer surrounding the dielectric, the electrical layer configured to shield the CNT cable. A method for making a CNT cable includes: controlling a deposition rate, depositing plating so as to surround a pair of wires, each wire comprising one or more sub-cores, at least one sub-core comprising CNT yarn; twisting the plated wires together; and surrounding the plated twisted wires with an electrical layer configured to shield the plated twisted wires, thereby creating the CNT cable.

Provided is a differential signal transmission cable, a multi-core cable, and a method of manufacturing a differential signal transmission cable that can suppress an increase in differential-to-common mode conversion quantity. The differential signal transmission cable includes two signal lines, an insulation layer covering a periphery of the two signal lines, and a plating layer covering the insulation layer. Differential-to-common mode conversion quantity of the differential signal transmission cable has a maximum value of 26 dB or less, in a frequency band of 50 GHz or less. In the method of manufacturing a differential signal transmission cable, dry ice blasting is performed on an outer peripheral surface of the insulation layer, and then corona discharge exposure is performed on the outer peripheral surface.