Apparatus, methods and systems for nano/micro machining. A lathe head has a microscopic pivot aperture for seating a conical tip. The conical tip is carried on a turnable part at one end thereof and is polished down to a microscopic apex. The microscopic pivot aperture is dimensioned for seating the concentric tip in the pivot aperture such that an apex of the conical tip protrudes through and beyond the aperture to a position in close proximity with the aperture. A driver system can comprise a rotator for axially rotating the turnable part, including the conical tip seated in the pivot aperture, and a forward pressure applicator for concurrently applying forward pressure to the conical tip in the direction of the pivot aperture. A light/particle beam system can be utilized to machine the rotating conical tip and the rotating turnable part, including the tip, can be easily removed after machining.

A method for integrally bonding a cast aluminum component to a joining partner. The method includes laser-treating a region of the cast aluminum component that is to be connected to the joining partner. The laser treatment is carried out via a pulsed laser system having a pulse duration of 100 to 200 ns, and an impulse frequency of 10 to 80 kHz. The method also includes integrally bonding the cast aluminum component and the joining partner.

Systems and methods are provided for generating microscale structures and/or nanoscale structures, surface profiles, and surface chemistries on medical devices. Embodiments disclosed herein utilize exposure of pulsed laser radiation on to a surface of a material by a pulsed laser. The pulsed laser according to embodiments disclosed herein is configured to emit at least one laser pulse toward the surface and thereby modify the profile of the surface in order to selectively promote or inhibit bioactivity and medical functionality of the material. By selectively promoting or inhibiting bioactivity of the material, enhanced biointegration at a cellular level may be achieved. For example, modifying the surface profile and/or surface chemistry of a first substrate material can improve adhesive and/or chemical bonding of the first material to a bioactive second coating material.

A coated article includes a substrate having an interference laser-treated surface portion, and a single-stage coating adhered directly to the interference laser-treated surface portion. A system and method for making a coated article are also disclosed.

Method and devices using lasers to reduce reflection of transparent solids in the optical spectrum, coatings and devices employing transparent solids are disclosed. The lasers are used to shape surfaces of the transparent solid materials by raising the temperature of the material to around the melting temperature, and thereby generate desired target nanostructure two-dimensional antireflection flection pattern arrays on the surfaces. The laser fluence value, wavelength, repetition rate, pulse duration and number of consecutive laser pulses per focus spot are selected, and a desired focus spot distribution on the surface of the transparent solid material is identified. The transparent solid material is relatively translated to generate the desired nanostructure two-dimensional pattern array.

The present disclosure provides methods and systems for composite-to-metal hybrid bonded structures compromising the laser surface treatment on titanium alloys to promote adhesive bond performance. For example, a computer may be programmed to set a laser path corresponding to a predetermined geometric pattern. A laser may be coupled to the computer and apply a pulsed laser beam to a contact surface of the titanium alloy along the predefined geometric pattern. The laser may generate an open pore oxide layer on the contact surface of the substrate with a thickness of 100 and 500 nm. The open pore oxide layer may have a topography corresponding to the predefined geometric pattern. The topography may contain high degree of open pore structure and promote adhesive bond performance. Adhesive, primer or composite resin matrix may fully infiltrate into the open pore structures. Adhesive and composite laminate may co-cure to form composite-to-titanium hybrid bonded structures.

An amorphous structure layer is formed on a surface layer of a bonded portion of each of side brackets. A bottomed hole layer including a plurality of bottomed holes is formed on a surface layer of the amorphous structure layer. Each of the bottomed holes has a reverse-tapered shape, which has, between an opening portion and a bottom portion of each of the bottomed holes, a bulged portion having a larger inner circumference than the opening portion. An adhesive is injected into the bottomed holes. An outer circumferential surface of the bonded portion of each of the side brackets and an inner circumferential surface of an end portion of a center beam face toward each other with the adhesive interposed therebetween.

A method for surface treatment of a roll, in which a laser is emitted on a roll surface to fabricate a pattern, includes a section allocation operation in which the roll surface is divided into multiple sections, and a pattern fabrication operation in which the roll is rotated in a circumferential direction, and a random pattern is fabricated on each of the fabrication sections, and an apparatus includes an apparatus frame, a fixing unit which is installed on the apparatus frame, supports a roll, and rotates in a circumferential direction of the roll, a laser unit which is installed on the apparatus frame, and emits a laser to the roll so that a pattern received may be formed on the roll surface through etching, and a displacement unit which is installed on the apparatus frame, and moves the laser unit along a lengthwise direction of the roll.

Systems and methods disclosed herein relate to texturing a metal surface. A disclosed method for texturing a metal surface comprises applying a material via a thermal spray to form a textured surface, for example on a firearm slide.

A cutting tool includes a portion made of a high hardness material. The portion includes a rake face, a flank face, and a cutting edge. The rake face is divided into a region A along the cutting edge and a region B excluding the region A of the rake face, a surface roughness of the region A is smaller than a surface roughness of the region B, and the region B is deepened with respect to a position of the region A.