Electronic smoking device with a heating element having a modified surface

1. An electronic smoking device comprising:

a liquid reservoir;

a battery;

a heating element adapted to atomize a liquid of the liquid reservoir;

wherein

the heating element has a modified surface which comprises a plurality of structures adapted to provide a capillary force on the liquid of the liquid reservoir when applied onto the heating element, wherein the plurality of structures include a plurality of cavities disposed on a surface of the heating element, between a first end and a second end of the heating element.

2. The electronic smoking device according to claim 1 , wherein the heating element comprises a heating wire comprising a conductive material.

3. The electronic smoking device according to claim 1 , wherein at least some of the structures of the modified surface of the heating element are generated via a mechanical treatment of the heating element.

4. The electronic smoking device according to claim 3 , wherein the mechanical treatment comprises at least one of a grinding treatment and a sand-blasting treatment of the heating element.

5. The electronic smoking device according claim 3 , wherein the mechanical treatment comprises at least one of polishing, brushing, milling, scouring, tumbling, drifting, shot-blasting, shot-blasting with steel balls and peening of the heating element.

6. The electronic smoking device according to claim 1 , wherein at least some of the structures of the modified surface of the heating element are generated via a chemical treatment of the heating element.

7. The electronic smoking device according to claim 6 , wherein the chemical treatment comprises an etching treatment of the heating element.

8. The electronic smoking device according to claim 6 , wherein the chemical treatment of the heating element comprises at least one of pickling, bating and bronzing of the heating element.

9. The electronic smoking device according to claim 1 , wherein at least some of the structures of the modified surface of the heating element are generated via a laser-etching treatment of the heating element.

10. The electronic smoking device according to claim 1 , wherein the structures of the modified surface are configured to increase the total surface of the heating element.

11. The electronic smoking device according to claim 1 , wherein the modified surface of the heating element has a maximum roughness R max that is greater than 0.5 mm.

12. The electronic smoking device according to claim 1 , wherein the modified surface of the heating element has an average surface roughness R z of Y, wherein Yϵ[5 μm; 200 μm].

13. The electronic smoking device according to claim 1 , wherein the modified surface has an arithmetical mean deviation R a that is greater than 5 μm.

14. A method for the manufacturing of a heating element for an electronic smoking device, the method comprising the steps of:

providing a conductive material with a first terminal and a second terminal, respectively, for connection with a power source;

treating at least a fraction of a surface of the conductive material mechanically or chemically or using an external power source; and providing the fraction of the surface with a plurality of structures adapted to provide a capillary force on liquid of a liquid reservoir when applied onto the heating element, wherein the plurality of structures include a plurality of dimples disposed on a surface of the heating element.

15. The method of claim 14 , wherein the step of treating comprises at least one of a grinding, a sand-blasting, a polishing, a brushing, a milling, a scouring, a tumbling, a drifting, a shot-blasting and a peening of the fraction of the surface of the conductive material.

16. The method of claim 14 , wherein the step of treating comprises at least one of an etching, a laser-etching, a pickling, a bating and a bronzing of the fraction of the surface of the conductive material.

17. A method for the manufacturing of a heating element for an electronic smoking device, the method comprising the steps of:

providing a conductive material with a first terminal and a second terminal, respectively, for the connection with a power source; and

treating at least a fraction of a surface of the conductive material mechanically or chemically or using an external power source to provide a modified surface of the heating element, wherein the modified surface of the heating element includes a plurality of dimples disposed on a surface of the heating element, wherein each one of the dimples is disposed between a first and a second end of the heating element.

18. The method of claim 17 , wherein the modified surface comprises a plurality of structures adapted to provide a capillary force on liquid of a liquid reservoir when applied onto the heating element.

19. The method of claim 17 , wherein the step of treating comprises at least one of a grinding, a sand-blasting, a polishing, a brushing, a milling, a scouring, a tumbling, a drifting, a shot-blasting and a peening of the fraction of the surface of the conductive material.

20. The method of claim 17 , wherein the step of treating comprises at least one of an etching, a laser-etching, a pickling, a bating and a bronzing of the fraction of the surface of the conductive material.