NOVELTY - Sorting nano-objects (objects with at least one spatial size of 0.05-500 nm) comprises: (a) providing contact between an initial mixture comprising the nano-objects with different electrical conductivities and a surface of a substance; (b) providing an energy transfer to the mixture; (c) selectively separating the weaker bonded and non-bonded nano-objects from the surface; and (d) obtaining a product that comprises the nano-objects with an average electrical conductivity that is different from the average electrical conductivity of the nano-objects in the initial mixture.    USE - The method and apparatus are useful for sorting nano-objects (all claimed).    DETAILED DESCRIPTION - Sorting nano-objects (objects with at least one spatial size of 0.05-500 nm) comprises: (a) providing contact between an initial mixture that comprises the nano-objects with different electrical conductivities and a surface of a substance selected from a solid, a liquid, and/or a soft matter; (b) providing an energy transfer to the mixture with an amount of heat per unit of time obtained by the nano-objects dependent on their electrical conductivities at least until some of the nano-objects are bonded to the surface with an average strength of this bonding dependent on the nano-objects electrical conductivities; (c) selectively separating mostly the weaker bonded and non-bonded nano-objects from the surface; and (d) obtaining a product that comprises the nano-objects with an average electrical conductivity that is different from the average electrical conductivity of the nano-objects in the initial mixture. INDEPENDENT CLAIMS are included for:    (1) an apparatus comprising a device selected from: (a) a field effect transistor, a bipolar transistor, a solar cell, a laser, a light emitting diode, a photodiode, an electron source, a device for transforming and radiating electromagnetic fields, an electrical source, a capacitor, a device for surface studies, a computer related device, a device for hydrogen storage, a monitor, a flexible electronic device, a flexible optoelectronic device, an electrical connector, and a thermal connector, comprising any nano-objects from the product obtained by the method above; and (b) a device for sorting nano-objects comprising: (i) a substance selected from a solid, a liquid, and/or a soft matter; (ii) a component providing contact between the surface of the substance and an initial mixture that comprises nano-objects with different electrical conductivities; (iii) a component providing an energy transfer to the mixture with an amount of heat per unit of time obtained by the nano-objects dependent on their electrical conductivities at least until some of the nano-objects are bonded to the surface with an average strength of this bonding dependent on the nano-objects electrical conductivities; (iv) a component providing a selective separation of mostly the weaker bonded and non-bonded nano-objects from the surface; and (v) a component obtaining a product that comprises the nano-objects with an average electrical conductivity that is different from the average electrical conductivity of the nano-objects in the initial mixture; and    (2) a method for increasing the portion of semiconducting nano-objects in a mixture that comprises nano-objects with different electrical conductivities comprising: (a) providing a placement of an initial mixture that comprises the nano-objects with different electrical conductivities into a gas medium under the pressure that is significantly lower than the normal atmospheric pressure (the pressure is less than 50 kPa); (b) providing an energy transfer to the mixture with an amount of heat per unit of time obtained by the nano-objects dependent on their electrical conductivities at least until some of the nano-objects are modified into a form selected from a gas, a liquid, a semiconductor, and/or an insulator; and (c) obtaining a product that comprises the nano-objects with a portion of the semiconducting nano-objects that is significantly bigger than the portion of the semiconducting nano-objects in the initial mixture.