A device for cutting a structure including wire-like nanoscale objects roughly aligned in the same axis, the device comprising: - a laser source able to emit a laser beam in the form of laser pulses of a width of between 1 femtosecond and 300 femtoseconds; - means (Lm, P1) able to adjust the energy of each emitted laser pulse between 0.1 μJ and 10 mJ; - means able to set a repetition frequency of the emitted laser pulses between 10 Hz and 10 kHz; and - a containment enclosure which includes: a) an observation port which is transparent to the wavelength of the laser pulses, b) a bracket on which the structure to be cut is positioned, and c) means to remove from the enclosure debris resulting from the cutting; and characterized in that it comprises: - means able to polarise linearly the laser pulses emitted so that a laser pulse is constituted of a first component according to the axis of the nanoscale objects and/or a second component according to an axis perpendicular to the axis of the nanoscale objects, - means able to focus, on the structure, the laser pulses on a distance of several centimeters, a focal spot of the laser pulse beam being comprised between between 10μm and 500μm, and in that said enclosure comprises means able to move the bracket so as to cause a displacement of the laser beam relative to the wire-like nanoscale objects of the structure. - a laser source able to emit a laser beam in the form of laser pulses of a width of between 1 femtosecond and 300 femtoseconds; - means (Lm, P1) able to adjust the energy of each emitted laser pulse between 0.1 μJ and 10 mJ; - means able to set a repetition frequency of the emitted laser pulses between 10 Hz and 10 kHz; and - a containment enclosure which includes: a) an observation port which is transparent to the wavelength of the laser pulses, b) a bracket on which the structure to be cut is positioned, and c) means to remove from the enclosure debris resulting from the cutting; and characterized in that it comprises: - means able to polarise linearly the laser pulses emitted so that a laser pulse is constituted of a first component according to the axis of the nanoscale objects and/or a second component according to an axis perpendicular to the axis of the nanoscale objects, - means able to focus, on the structure, the laser pulses on a distance of several centimeters, a focal spot of the laser pulse beam being comprised between between 10μm and 500μm, and in that said enclosure comprises means able to move the bracket so as to cause a displacement of the laser beam relative to the wire-like nanoscale objects of the structure. a) an observation port which is transparent to the wavelength of the laser pulses, b) a bracket on which the structure to be cut is positioned, and c) means to remove from the enclosure debris resulting from the cutting; - means able to polarise linearly the laser pulses emitted so that a laser pulse is constituted of a first component according to the axis of the nanoscale objects and/or a second component according to an axis perpendicular to the axis of the nanoscale objects, - means able to focus, on the structure, the laser pulses on a distance of several centimeters, a focal spot of the laser pulse beam being comprised between between 10μm and 500μm, and in that said enclosure comprises means able to move the bracket so as to cause a displacement of the laser beam relative to the wire-like nanoscale objects of the structure.