Slider having angled or curvilinear sidewalls
The present disclosure includes methods of forming air bearing surfaces having multi-tier structures using nanoimprint technology and/or 3D printing technology. In some embodiments, a single stage of milling can be used to transfer a multi-tier photoresist pattern into a substrate (e.g., an AlTiC substrate).
1. A slider body comprising:
an air bearing face, wherein the air bearing face comprises a leading edge and a trailing edge;
two side faces, wherein each side face is adjacent to the air bearing face; and
a trailing edge face that is adjacent to the trailing edge of the air bearing face, wherein the air bearing face has a topography comprising at least a first face portion, a second face portion and a third face portion, wherein the first and second face portions are opposite a disc media surface when positioned in a hard disc drive, wherein the first face portion is separated by a distance from the second face portion, wherein the first face portion has an outer periphery and the second face portion has an inner periphery proximal to the outer periphery, wherein a sidewall extends between the outer periphery and the inner periphery, wherein the sidewall from the outer periphery of the first face portion to the inner periphery of the second face portion is linear, wherein the linear sidewall forms an angle with respect to the second face portion, wherein the angle is an obtuse angle, wherein the third face portion is opposite a disc media surface when positioned in a hard disc drive, wherein the third face portion is separated by a distance from the second face portion, wherein the second face portion has an outer periphery and the third face portion has an inner periphery proximal to the outer periphery of the second face portion, wherein a sidewall extends between the outer periphery of the second face portion and the inner periphery of the third face portion, wherein the sidewall from the outer periphery of the second face portion to the inner periphery of the third face portion is linear or curvilinear, and wherein the linear sidewall forms an angle with respect to the third face portion, wherein the angle is an acute angle.
2. The slider body of claim 1 , wherein the obtuse angle is between 120 and 150 degrees.
3. The slider body of claim 1 , wherein the sidewall from the outer periphery of the second face portion to the inner periphery of the third face portion is linear and the angle between the linear sidewall and the third face portion is between 40 and 70 degrees.
4. The slider body of claim 1 , wherein the sidewall from the outer periphery of the second face portion to the inner periphery of the third face portion is curvilinear.
5. The slider body of claim 1 , wherein the obtuse angle is greater than 110 degrees.
6. The slider body of claim 1 , wherein the sidewall from the outer periphery of the second face portion to the inner periphery of the third face portion is linear and the angle between the linear sidewall and the third face portion is less than 80 degrees.
7. The slider body of claim 1 , further comprising a fourth face portion, wherein the fourth face portion is opposite a disc media surface when positioned in a hard disc drive, wherein the fourth face portion is separated by a distance from the third face portion, wherein the third face portion has an outer periphery and the fourth face portion has an inner periphery proximal to the outer periphery of the third face portion, wherein a sidewall extends between the outer periphery of the third face portion and the inner periphery of the fourth face portion, wherein the sidewall from the outer periphery of the third face portion to the inner periphery of the fourth face portion is linear or curvilinear, wherein a linear sidewall forms an angle with respect to the fourth face portion, wherein the angle is an obtuse angle or an acute angle.
8. A slider body comprising:
an air bearing face, wherein the air bearing face comprises a leading edge and a trailing edge;
two side faces, wherein each side face is adjacent to the air bearing face; and
a trailing edge face that is adjacent to the trailing edge of the air bearing face, wherein the air bearing face has a topography comprising at least a first face portion, a second face portion, and a third face portion, wherein the first, second, and third face portions are opposite a disc media surface when positioned in a hard disc drive, wherein the first face portion is separated by a distance from the second face portion, wherein the first face portion has an outer periphery and the second face portion has an inner periphery proximal to the outer periphery of the first face portion, wherein a sidewall extends between the outer periphery of the first face portion and the inner periphery of the second face portion, wherein the sidewall from the outer periphery of the first face portion to the inner periphery of the second face portion is linear or curvilinear, wherein the linear sidewall forms an angle with respect to the second face portion, wherein the angle is an acute angle, wherein the third face portion is separated by a distance from the second face portion, wherein the second face portion has an outer periphery and the third face portion has an inner periphery proximal to the outer periphery of the second face portion, wherein a sidewall extends between the outer periphery of the second face portion and the inner periphery of the third face portion, wherein the sidewall from the outer periphery of the second face portion to the inner periphery of the third face portion is linear, wherein the linear sidewall forms an angle with respect to the third face portion, wherein the angle is an obtuse angle.
9. The slider body of claim 8 , wherein the angle between the linear sidewall and the third face portion is greater than 110 degrees.
10. The slider body of claim 8 , wherein the angle between the linear sidewall and the third face portion is between 120 and 150 degrees.
11. The slider body of claim 8 , wherein the angle between the linear sidewall and the second face portion is less than 80 degrees.
12. The slider body of claim 8 , wherein the angle between the linear sidewall and the second face portion is between 40 and 70 degrees.
13. A slider body comprising:
an air bearing face, wherein the air bearing face comprises a leading edge and a trailing edge;
two side faces, wherein each side face is adjacent to the air bearing face; and
a trailing edge face that is adjacent to the trailing edge of the air bearing face, wherein the air bearing face has a topography comprising at least a first face portion, a second face portion, a third face portion and a fourth face portion, wherein the first and second face portions are opposite a disc media surface when positioned in a hard disc drive, wherein the first face portion is separated by a distance from the second face portion, wherein the first face portion has an outer periphery and the second face portion has an inner periphery proximal to the outer periphery, wherein a sidewall extends between the outer periphery of the first face portion and the inner periphery of the second face portion, wherein the sidewall is linear, wherein the linear sidewall forms an angle with respect to the second face portion, wherein the angle is an obtuse angle, wherein the third face portion is opposite a disc media surface when positioned in a hard disc drive, wherein the third face portion is separated by a distance from the second face portion, wherein the second face portion has an outer periphery and the third face portion has an inner periphery proximal to the outer periphery of the second face portion, wherein a sidewall extends between the outer periphery of the second face portion and the inner periphery of the third face portion, wherein the sidewall between the outer periphery of the second face portion and the inner periphery of the third face portion is linear or curvilinear, wherein a linear sidewall forms an angle with respect to the third face portion, wherein the angle is an obtuse angle or an acute angle, wherein the fourth face portion is opposite a disc media surface when positioned in a hard disc drive, wherein the fourth face portion is separated by a distance from the third face portion, wherein the third face portion has an outer periphery and the fourth face portion has an inner periphery proximal to the outer periphery of the third face portion, wherein a sidewall extends between the outer periphery of the third face portion and the inner periphery of the fourth face portion, wherein the sidewall is linear or curvilinear, and wherein a linear sidewall forms an angle with respect to the fourth face portion, wherein the angle is an obtuse angle or an acute angle.
14. The slider body of claim 13 , wherein the angle between the linear sidewall and the second face portion is greater than 110 degrees.
15. The slider body of claim 13 , wherein the angle between the linear sidewall and the second face portion is between 120 and 150 degrees.
16. The slider body of claim 13 , wherein the angle between the linear sidewall and the second face portion is less than 80 degrees.
17. The slider body of claim 13 , wherein the angle between the linear sidewall and the second face portion is between 40 and 70 degrees.
18. The slider body of claim 13 , wherein the sidewall between the outer periphery of the second face portion and the inner periphery of the third face portion is linear and the angle between the linear sidewall and the third face portion is between 120 and 150 degrees and/or wherein the sidewall between the outer periphery of the third face portion and the inner periphery of the fourth face portion is linear and the angle between the linear sidewall and the fourth face portion is between 120 and 150 degrees.
19. The slider body of claim 13 , wherein the sidewall between the outer periphery of the second face portion and the inner periphery of the third face portion is linear and the angle between the linear sidewall and the third face portion is less than 80 degrees and/or wherein the sidewall between the outer periphery of the third face portion and the inner periphery of the fourth face portion is linear and the angle between the linear sidewall and the fourth face portion is less than 80 degrees.
20. The slider body of claim 13 , wherein the sidewall between the outer periphery of the second face portion and the inner periphery of the third face portion is linear and the angle between the linear sidewall and the third face portion is between 40 and 70 degrees and/or wherein the sidewall between the outer periphery of the third face portion and the inner periphery of the fourth face portion is linear and the angle between the linear sidewall and the fourth face portion is between 40 and 70 degrees.