Abstract: A semiconductor apparatus includes a housing in a shape of a panel, a cooling fan configured to exhaust from a top surface of the housing, and provided on the top surface, a partition plate configured to vertically partition a space below the cooling fan into a first space and a second space, and including opening portions through which a cooling airflow produced by the cooling fan passes from the first space to the second space, semiconductor units cooled by the cooling airflow, and vertically disposed in the first space, and a slit plate attached to at least one of the opening portions of the partition plate, and configured to limit an airflow speed of the cooling airflow.

Abstract: An electronic device including reinforced printed circuit board is provided. The electronic device includes the printed circuit board including a first area, and a second area that extends from a first end of the first area. A width of the second area is smaller than a width of the first area, and at least a portion of a surface of the second area is covered by a material layer that provides the second area with a specific strength.

Abstract: A slurry for chemical mechanical planarization includes water, 1-3 wt. % of abrasive particles having an average diameter of at least 10 nm and less than 100 nm and an outer surface of ceria, and ½-3 wt. % of at least one amine.

Abstract: There is provided an absorbent system for wound care products having a liquid-absorbing, wound-contacting, lower layer and a more highly absorbent upper layer in liquid communication with said lower layer. Liquid communication may be provided by pores running between the layers. The dressing may include antimicrobial agents, agents to promote healing and other functional agents.

Abstract: The described embodiments relate to methods and apparatus for increasing rigidity of a metal housing while maintaining or reducing a wall thickness of the metal housing. More particularly a method for embedding a stiffener layer within an aluminum substrate is discussed. In one exemplary embodiment the stiffener layer can be a carbon fiber sheet applied to an inside surface of an unfinished housing and then subsequently covered by depositing a layer of aluminum over the carbon fiber in a solid-state deposition process. The deposited aluminum can adhere to the unfinished housing around or through the carbon fiber layer to bond with the unfinished housing. Deposition parameters can be controlled to prevent damage to the carbon fiber sheet.

Abstract: An insulation element for insulating a structural element in a vehicle includes a support element having a first surface and a second surface and an expandable material, which is arranged at least on partial areas of the first surface of the support element. The support element has at least one penetration and the expandable material projects through the penetration and forms a protrusion on one side of the second surface of the support element. The protrusion is dimensioned and the expandable material designed in such a way that the protrusion has a larger cross section after expansion than a cross section of the penetration.

Abstract: The claimed invention differs from what currently exists as Kevlar core is encased by resinated Jute/burlap, with optional addition of one or more layers of resinated Kevlar, and/or Carbon Fiber for additional structural support. Insulation and barrier is inserted to overcome backface deformation and blast overpressure to the composite. Less the 0.2 mm aluminum sheeting is inserted to deflect electromagnetic pulse jamming. Entire composite is then coated with insulating intumescing or other class A fire resistant coating. This results in a Composite which becomes very strong with a reduction in raw material costs, that is not only resistant to projectiles, but is also resistant to acid, blast overpressure, backface deformation, electromagnetic pulse and direct flame in excess of 2,000 degrees Fahrenheit.

Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionization source, a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. A first vacuum pump is arranged and adapted to pump the first vacuum chamber, wherein the first vacuum pump is arranged and adapted to maintain the first vacuum chamber at a pressure <10 mbar. A first RF ion guide is located within the first vacuum chamber. An ion detector is located in the third vacuum chamber. The ion path length from the atmospheric pressure sampling orifice or capillary to an ion detecting surface of the ion detector is ?400 mm. The mass spectrometer further comprises a split flow turbomolecular vacuum pump comprising an intermediate or interstage port connected to the second vacuum chamber and a high vacuum (“HV”) port connected to the third vacuum chamber.

Abstract: A fiber composite component includes a composite including cured matrix material and a fiber material embedded therein. At least one partial area of the fiber composite component is provided with at least one thread, which undulates as it extends along a surface area of the composite, so that sections of the thread alternately run inside of the composite and outside of the composite. An adhesive arrangement for such fiber composite components is also disclosed. Finally, methods for manufacturing such a fiber composite component or for manufacturing such an adhesive arrangement are disclosed.

Abstract: An object is to provide a transparent screen which can clearly project and display an image without degradation of transmission visibility and a method for manufacturing the transparent screen. A thin film 4 in which a large number of regular hexagonal hole portions 3 that are identical to each other are opened, in a transparent sheet 2, in a web-like manner is applied to a transparent screen 1. The regular hexagonal hole portions 3 are segmented with web-like line portions 6 formed by connecting the sides 5 of the adjacent regular hexagonal hole portions 3 so as to have an even width, image light projected from a projector 7 is reflected off the web-like line portions 6 and is shown on the transparent screen 1 and a background on the back surface side of the transparent screen 1 can be visually recognized through the regular hexagonal hole portions 3.

Abstract: A deformable wheel pad for receiving a wheel of a vehicle and assisting in securing the received wheel in place on a cargo bed or other transporting surface includes a multilayered pad member having a top layer constructed of an elastic material, a middle layer constructed of a rigid material, and a bottom layer constructed of a an elastic material, with layers arranged on top of one another. When the pad member is placed on the cargo bed of a convention truck or trailer, the top layer can contour its shape to grip a wheel which has been strapped thereto and bottom layer's forms to and grips factory bed ribs. The elasticity of the top layer and the bottom layer, with the middle layer disposed therebetween, provides two discrete shock absorption surfaces.

Abstract: A housing defines a bypass passage and a sub-bypass passage. The bypass passage draws a part of air flowing through an interior of a duct. The sub-bypass passage is branched from the bypass passage to draw a part of air flowing through the bypass passage. A flow sensor is equipped in the sub-bypass passage to cause heat transfer with air, which passes through the sub-bypass passage, and to generate an electric signal according to a flow quantity of air in the duct. An intake-air temperature sensor is configured to measure a temperature in the duct. A moisture sensor is configured to measure a humidity in the duct. The flow sensor and the multiple sensors are equipped in the sub-bypass passage and are located along a direction of flow of air in the sub-bypass passage.

Abstract: Carbon nanotubes grown on nanostructured flake substrates are disclosed. The nanostructured flake substrates include a catalyst support layer and at least one catalyst layer. Carbon nanotubes grown on the nanostructured flake substrates can have very high aspect ratios. Further, the carbon nanotubes can be aligned on the nanostructured flake substrates. Through routine optimization, the nanostructured flake substrates may be used to produce single-wall, double-wall, or multi-wall carbon nanotubes of various lengths and diameters. The nanostructured flake substrates produce very high yields of carbon nanotubes per unit weight of substrate. Methods for making the nanostructured flake substrates and for using the nanostructured flake substrates in carbon nanotube synthesis are disclosed.

Abstract: Sound insulation constructions, multilayer constructions for acoustically insulating a source of sound from a receiver that include one or more sound insulation constructions, structures comprising one or more sound insulation constructions and/or multilayer constructions, and a method for acoustically insulating a source of sound from a receiver. In some embodiments, the sound insulation construction includes a first layer and a second layer. The first layer can include a bonded fiber nonwoven web exhibiting a work of compression of at least about 0.7 kJ/m3 and an airflow resistance of no greater than 10,000 Rayls/m. The second layer can exhibit an airflow resistance of greater than 10,000 Rayls/m. In some embodiments, the method includes coupling the first layer to a surface of a vehicle to attenuate sound in at least a portion of the vehicle.

Abstract: A mobile device is disclosed. The mobile device includes a frame structure including a side edge frame and a horizontal baffle, the side edge frame forming side edges of the mobile device, the horizontal baffle including a rim connected with interior walls of the side edge frame; and a screen module including side edges sized to fit in a space surrounded by the interior walls of the side edge frame, a bottom surface of the screen module being connected with an upper surface of the horizontal baffle, each of the side edges of the screen module being attached to a corresponding interior wall of the side edge frame.

Abstract: A moveable anti-fatigue mat that can be moved by a user's foot without the need for the user to bend over. In one embodiment, the anti-fatigue mat comprises a cushioned top layer affixed to a high friction bottom layer, wherein a low friction activation pad is positioned on or within the bottom layer. The activation pad can be attached so that a bottom surface protrudes below or is flush with the bottom surface of the bottom layer, and the activation pad is preferably located near the edge of the bottom layer. The anti-fatigue mat may be slid laterally on a floor or surface by a user's foot when a user places his foot on the mat directly above the activation pad and applies pressure downward and in the direction the user wishes the mat to move.

Abstract: The present invention relates to a disposable absorbent pad comprising multiple layers. In particular, the absorbent pad of the present invention maintains skin dryness by absorbing moisture while preventing leakage to the skin or the bed linens, allowing air circulation at the surface of the patient's skin to prevent heat buildup, and is strong enough to allow the patient to be repositioned, even when the pad is wet. In a particular embodiment the first layer is comprised of a fluid-permeable, porous material, the second layer is disposed under the first layer and is comprised of at least one super absorbent material, and a base layer disposed under the second layer.

Abstract: A device includes multiple components that are independent from one another but are configured to be detachably coupled with one another so as to form a cartridge. One of the components is a clamp that is configured to hold the other components such that they are coupled together. The cartridge has one or more reservoirs, one or more functional chambers, and one or more channels configured to transport a liquid stored in at least one of the one or more reservoirs into the one or more functional chambers.

Abstract: The present invention is notably directed to a microfluidic chip. The chip comprises a main microfluidic channel, on one side of the chip, and a bead integration system. The bead integration system is arranged on said one side of the chip. It comprises an auxiliary microfluidic channel transverse to and in fluidic communication with the main microfluidic channel, so as to form an intersection therewith. The intersection is delimited by structural elements arranged in the main microfluidic channel. The structural elements are configured to retain, at said intersection, beads flowed in a bead suspension liquid advancing in said auxiliary microfluidic channel and passing the intersection. In addition, such structural elements are configured to let liquid advancing in the main microfluidic channel pass the intersection through the structural elements. The invention is further directed to related devices and methods.

Abstract: The present invention relates to a disposable absorbent pad comprising multiple layers. In particular, the absorbent pad of the present invention maintains skin dryness by absorbing moisture while preventing leakage to the skin or the bed linens, allowing air circulation at the surface of the patient's skin to prevent heat buildup, and is strong enough to allow the patient to be repositioned, even when the pad is wet. In a particular embodiment the first layer is comprised of a fluid-permeable, porous material, the second layer is disposed under the first layer and is comprised of at least one super absorbent material, and a base layer disposed under the second layer.

Abstract: A method for preparing plan-view transmission electron microscopy specimens is disclosed. The method employs isotropic vapor-phase etching in conjunction with one or more integrated etch-stop layers that give rise to a support membrane having a well-controlled, substantially uniform thickness. In some embodiments, the support membrane comprises an etch-stop layer that is formed using a high-precision formation process, such as atomic-layer deposition, oxidation, and the like. As a result, formation of the support membrane does not require additional processes, such as mechanical polishing or ion milling, to achieve its desired thickness. The method enables reduced specimen-preparation time, as well as simultaneous preparation of multiple specimens having large, uniformly thick areas for imaging.

Abstract: A reinforced catalyst layer assembly, suitably for use in a fuel cell, said reinforced catalyst layer assembly comprising: (i) a planar reinforcing component consisting of a porous material having pores extending through the thickness of the material in the z-direction, and (ii) a first catalyst component comprising a first catalyst material and a first ion-conducting material, characterized in that the first catalyst component is at least partially embedded within the planar reinforcing component, forming a first catalyst layer having a first surface and a second surface is disclosed.

Abstract: An easily applied and replaced flexible container pouch applied to the penis end and including a restricted opening collar to grasp the penis shaft. The container pouch comprises a plurality of walls having a fluid absorbent layer between at least 2 walls, the inner wall (proximal to the penis) include apertures allowing the fluid emitted by the penis to be received into the absorbent layer(s). In one embodiment, the inner layer(s) comprise fluid barriers (e.g. fluid impermeable or a thick member providing a mechanical spacing) between the fluid-filled absorbent layer(s) and the penis. The resulting device provides comfort and protection from unnecessary fluid immersion and ease of use, application and replacement.

Abstract: A method of manufacturing a pellicle includes forming a membrane on a first surface of a substrate from a chemical reaction in which the substrate serves as a catalyst, forming a protective pattern on a second surface of the substrate, immersing the substrate in an etchant solution, such that a portion of the substrate exposed through the protective pattern is removed to form a frame, and replacing the etchant solution with a solvent.

Abstract: A joint connector for connecting abutting edges of tapered drywall is provided that includes a base, a column projecting forward from said base, and mud legs extending generally perpendicular to said column forming pockets for receipt of tapered edges of said drywall.

Abstract: Composite fasteners have a high fraction of discontinuous, randomly oriented reinforcing fibers. A charge of thermoplastic fiber flakes are heated to melting temperature within a reservoir, flowed into multiple mold cavities and compression molded. The molded fasteners have high strength, exhibit quasi-isotropic properties and may be produced in high volume.

Abstract: A laminating roller for laminating a sheet of a packaging laminate comprises at least one groove extending along the periphery of the roller and forming a border between two circumferential portions, wherein each of the two circumferential portions are extending continuously around the surface area of the roller. The laminating roller can also be used in a method for providing a packaging laminate.

Abstract: Heatshield with at least one hole, characterized in that an embossment pattern is arranged around the hole, whereby the embossment pattern comprises of a plurality of protruding elongated elements extending or radiating essentially perpendicular to the perimeter of the hole.

Abstract: Insulating panel (10) having a top face (12) and a bottom face (14) opposite the top face, comprising a body (20) made of stone wool of substantially uniform density, at least one profiled groove (22) being formed in said insulating panel starting from the top face, the top face (12) being made of stone wool, the groove (22) being formed in the stone wool, the number of grooves being less than or equal to three for 60 cm of a dimension of said panel perpendicular to the direction of the grooves.

Abstract: Insulating panel (10) having a top face (12) and a bottom face (14) opposite the top face, comprising a body (20) made of stone wool with a part of substantially uniform first density and a part of substantially uniform second density, different from the first density, at least one profiled groove (22) being formed in said insulating panel starting from the top face, the top face (12) being made of stone wool, the groove (22) being formed in the stone wool, the number of grooves being less than or equal to three for 60 cm of a dimension of said panel perpendicular to the direction of the grooves.

Abstract: A mess-free coloring system comprising a coloring medium and optionally one or more coloring utensils is disclosed. The coloring medium can include a substrate with or without decorative effects and one or more coating layers on a surface of the substrate. In various examples, the one or more coating layers include a color-triggering developer, e.g., in the form of a substantially clear resin, and an opaque pigment. Decorative effects integrated with or disposed on the substrate, while initially obscured by the one or more coating layers, can be revealed when the coating layers are mixed with at least one color precursor stored and dispensed from a coloring utensil. The opaque pigment is selected and configured such that, upon receipt of at least one color precursor by the one or more coating layers, a change in the pigment's reflective index occurs as the pigment dissolves into the clear resin developer.

Abstract: A disposable absorbent article including a chassis. The chassis includes a front region having two opposing longitudinal edges, a back region having two opposing longitudinal edges, and a crotch region having two longitudinal edges. The crotch region is disposed between said front and back regions, and at least two side panels extend outwardly from the two opposing longitudinal edges of one or both of the front or back regions. The side panels may interconnect the front and the back regions to form a waist opening and a pair of leg openings. The article exhibits a pre-application side panel length, Li, and a post-application side panel length, Lf, such that Li is less than Lf. The article may also include a plurality of graphics.

Abstract: An axle support for a motor vehicle includes at least one first support and at least one second support fitted onto the first support. A cavity between the first and second supports that is defined by the surfaces of the supports and circumferential sealing rings is filled with adhesive to adhere the supports to one another. One of the supports is preferably made of metal, preferably cast aluminum, and the other support is preferably made of fiber-reinforced plastic.

Abstract: The invention provides a cationic emulsion having a polymer core-shell structure that exhibits excellent substrate adhesiveness, water resistance, alcohol resistance, and high gloss when used in an aqueous ink, and exhibits excellent color developing properties and water resistance when used in a recording medium, specifically, a cationic emulsion having a polymer core-shell structure comprising component (A) and component (B) and having a mass ratio of component (A):component (B) of 25:75-75:25. (A) Emulsion polymer core component obtained by polymerizing a monomer having a vinyl chloride monomer as a constituent. (B) Emulsion polymer shell component, having a structure obtained by polymerizing a monomer mixture having, as constituents: styrenes and a compound of formula (1); or styrenes, a compound of formula (1), and a (meth)acrylic ester having 1-22 carbon atoms in the ester part as a compound (2); in which the compound of formula (1) is 20-45 mass % in the monomer mixture.

Abstract: A method of making extensible web laminates comprising a multilayer film and at least one web layer and the use of such extensible web laminates in personal care articles. The method generally includes activating the multilayer film in a first direction by stretching at least a portion of the multilayer film past the elastic deformation limit of the skin layers and recovering the skin layers with the elastomeric core layer to produce a multilayer film that is elastic in the first direction. The activated multilayer film is subsequently stretched beyond the deformation limit of the skin layers in a second direction substantially perpendicular to the first direction. At least one web layer is applied to the multilayer film while in the stretched state. The multilayer film is then recovered to produce an extensible web laminate.

Abstract: A mat for collecting fluid spilled onto a floor that includes a body of small thickness relative to its length and width and having an upper surface defining a plurality of receptacles and a lower surface defining a plurality of diagonally oriented channels or passages that communicate with each other and with the drains. The diagonal channels have distal ends that terminate in an end wall and inner ends that communicate directly or indirectly with a collection channel, the collection channel having a discharge port that is connectable to a suction source. The diagonal channels are formed in two groups that are disposed symmetrically about the collection channel. The mat is especially suitable for use on the floor of an operating room, as well as the floor of a food processing or manufacturing facility where fluids are spilled.

Abstract: A method of manufacturing a combined circuit board includes the following steps. First, through portions (TPs) arranged in a predetermined format are formed in a rigid substrate (RS) such that the RS is divided into a predetermined removed region (PRR1) and a predetermined reserved region (PRR2) according to the arrangement of the TPs. Next, a conductive bonding layer (CBL) and a flexible circuit board (FCB) are respectively laminated on two opposite sides of the RS and part of a dielectric bonding layer of the CBL fills the TPs. Next, the RS, the FCB and the CBL are bent according to the TPs such that the PRR2 is bent at the TPs relative to the PRR1. Finally, part of the RS located at the PRR1 and part of the CBL corresponding to the PRR1 are removed to form an indentation to expose part of the FCB.

Abstract: An acoustic wave device includes a piezoelectric substrate, comb-shaped electrodes, wires, a sealing body, terminal electrodes, and connection electrodes. The comb-shaped electrodes are disposed on the piezoelectric substrate and are connected to the wires. The sealing body is disposed on the piezoelectric substrate in such a manner that the comb-shaped electrodes are sealed between the piezoelectric substrate and the sealing body. The terminal electrodes are disposed on the sealing body. The connection electrodes penetrate the sealing body so as to electrically connect the wires and the terminal electrodes, respectively. A first linear expansion coefficient in a first temperature range below a first glass transition temperature of the sealing body is larger than a second linear expansion coefficient in a second temperature range above the first glass transition temperature.

Abstract: An optical patterning mask, including a base substrate, a reflective layer disposed on the base substrate, the reflective layer including a first opening, a shadow pattern disposed on the base substrate and in the first opening, a thermal insulation layer disposed on the base substrate and covering the reflective layer and the shadow pattern, an absorption layer disposed on the thermal insulation layer, a bank layer disposed on the absorption layer, the bank layer including a second opening overlapping the first opening, a thermal conduction prevention pattern disposed on the absorption layer and overlapping the shadow pattern, and a transfer layer disposed on the absorption layer, the bank layer, and the thermal conduction prevention pattern.

Abstract: A roof product has a thermal heat storage layer, a vent layer with channels for transferring excess heat through a length of the roof product, and a flame retardant to suppress fire through the vent layer. These three materials form a unitary structure. The roof product may have a radiant layer, the thermal heat storage layer and the vent layer to form the unitary structure. The roof products are assembled in an abutting configuration on the roof of a building. The vent layer vents excess heat from an eave of the roof up to a ridge of the roof and out to atmosphere. The roof products manage thermal energy in the roof by storing thermal heat with the unitary roof product during a heating cycle; venting excess heat through the unitary product; and releasing the stored thermal heat from the unitary product into or out of the building during a cooling cycle.

Abstract: The present invention relates to a process for preparing an electronic device comprising at least one layer selected from the group consisting of a upper electrode layer, a lower electrode layer, an organic layer and an inorganic layer, which comprises a step of introducing a nanoparticle layer or a nano/micro structure layer by adhering charged nanoparticles, before, after or during forming the layer.

Abstract: The present invention addresses the problem of providing a novel absorbent that comprises a water-absorbing cellulose-based fiber and a thermoplastic resin fiber, said thermoplastic resin fiber containing as a monomer component an unsaturated carboxylic acid or an unsaturated carboxylic acid anhydride, and has both a sufficient strength and a sufficient absorption property. The absorbent comprises a water-absorbing cellulose-based fiber and a thermoplastic resin fiber, said thermoplastic resin fiber containing as a monomer component an unsaturated carboxylic acid or an unsaturated carboxylic acid anhydride, wherein the mass ratio (the content of the water-absorbing cellulose-based fiber: the content of the thermoplastic resin fiber) is controlled to 90:10 to 50:50 and the density of the absorbent is controlled to 0.06 to 0.14 g/cm3.

Abstract: A die for forming a molding includes a molding die including an upper die and a lower die cooperating with the upper die to support a glass plate and forming a resin molding, the lower die having a concave surface including a contact surface that comes into contact with a metal molding, and a plurality of aperture portions formed on the contact surface, a non-magnetic cylindrical intermediate member contacted with an inner surface of each of the aperture portions, a molding-fixing member including a crown portion that retains the metal molding, and a flange portion disposed on a lower side of the crown portion, and a magnetic force generation device. The flange portion of the molding-fixing member has an outer diameter larger than an inner diameter of each of the aperture portions.

Abstract: A glass film laminate includes a supporting member and a glass film laminated to each other. The supporting member protrudes from the glass film, and has a peeling start portion at which at least one corner portion of the glass film is exposed from the supporting member. The peeling start portion is provided with a distance from a side of the supporting member.

Abstract: Apparatus and associated methods relate to a flexible membrane defining pathways for receiving a flexible conduit, and further defining attachment regions between the pathways formed with overhanging walls. In an illustrative example, the membrane may be vacuum-formed plastic sheet material. In some embodiments the flexible conduits may conduct electricity or heat transfer fluids, for example. In various implementations, the overhanging walls in the attachment regions may advantageously provide improved vertical attachment strength to a rigid planar substrate placed over a mortar filled into the attachment regions.

Abstract: A perforated-structure body having a plurality of apertures that penetrate from a first main surface to a second main surface of a perforated plate. Support substrates are stacked on at least one of the first main surface and the second main surface of the perforated plate so as to define a portion through which at least one of the apertures is exposed.

Abstract: In manufacturing multilayer plastic laminates for printed circuits, a press with two surfaces exerts pressure under vacuum on a stack of laminates, the packs, alternated with separator plates made of anodized aluminum. The packs include prepreg layers. The metalizations present on the two sides of each pack are portions of a copper strip repeatedly folded 180° around each pack and each separator plate. A strong current circulates in the copper strip which heats the strip with resistive behavior: the heat causes the close fixing of the various layers. An auxiliary heater is applied to each surface of the press by element of an interposed insulating plate. This includes an aluminum plate with equidistant longitudinal holes containing the same number of armored candle-like resistors, connected in parallel. A main power supply provides direct current to the copper strip, two secondary power supplies provide alternating current to the two auxiliary heaters.

Abstract: Pedestaled roof underlayment systems and methods are disclosed herein. A pedestaled roof underlayment system comprises a pedestaled sheet including a plurality of regularly spaced pedestals on one side and a generally flat surface on the other side. The system includes a multi-layer roofing underlayment including a slip resistant top layer, a UV protection layer and a strength layer. A reflective barrier layer may be included with the multi-layer roofing underlayment. The pedestaled sheet may be conical and/or tapered, and may have a top shape and cross section that may be circular, triangular, hexagonal and square.

Abstract: An appliance is provided including a noise reduction device to reduce noise generated within a main body of the appliance. The noise reduction device may include a sound absorbing plate having a plurality of sound absorbing holes and a resonance member, one side of which is open and having a hollow portion, so that noise generated by a drive of the appliance passes through the noise reduction device, in order to efficiently reduce noise in the appliance and achieve an increase of internal capacity, a decrease in weight, and a reduction in manufacturing costs for the appliance.

Abstract: A wafer thinning system and method are disclosed that includes grinding away substrate material from a backside of a semiconductor device. A current change is detected in a grinding device responsive to exposure of a first set of device structures through the substrate material, where the grinding is stopped in response to the detected current change. Polishing repairs the surface and continues to remove an additional amount of the substrate material. Exposure of one or more additional sets of device structures through the substrate material is monitored to determine the additional amount of substrate material to remove, where the additional sets of device structures are located in the semiconductor device at a known depth different than the first set.