Abstract: A surface enhanced infrared absorption stage may include a substrate, a static island extending from the substrate and a movable nano finger extending from the substrate. The static island may have a plasmonically active island cap and a dimension parallel to the substrate of at least one micrometer. The movable nano finger may be aligned with the dimension. The movable nano finger may have a plasmonically active finger cap closable to less than or equal to 5 nm of the island cap.

Abstract: A spectroscopic device is provided. The spectroscopic device includes a plurality of design groups on a substrate. Each design group includes a plurality of collapsed groups separated by bare regions of substrate, wherein the edges of each design group is configured to enhance the pinning of a solvent drying line at the edge of the design group. Each collapsed group comprises at least 2 flexible columnar structures, and each flexible columnar structure comprises a metal cap.

Abstract: In one example, an apparatus includes a surface-enhanced substrate having a microdot deposited onto a surface thereon via a microfluidic ejector. The microdot includes a predetermined concentration of an analyte.

Abstract: An example apparatus includes a sampling layer to position microscopic objects thereon, a light encoding layer to encode light from passing through the microscopic objects of the sampling layer, the light encoding layer having a substantially flat form, and an imaging layer to capture an image of the sampling layer, the image being encoded by the light encoding layer.

Abstract: In an example, an apparatus is described that includes a light source, a holographic optical element, a sampling apparatus, and a detector. The light source is configured to emit a beam of excitation light. The holographic optical element is arranged to convert the beam of excitation light into a plurality of beams of excitation light. The sampling apparatus is arranged to project the plurality of beams of excitation light onto a surface outside the apparatus as a two-dimensional pattern of projection points. The sampling apparatus is further arranged to collect scattered radiation emitted by the surface in response to the two-dimensional pattern of projection points. The detector detects a frequency shift in the scattered radiation.

Abstract: A surface enhanced luminescence (SEL) sensor may include a substrate and nano fingers extending from the substrate. In one implementation, the nano fingers may be arranged in a cluster of at least three nano fingers extending from the substrate. The nano fingers of the cluster having different geometries so as to bend into a closed state such that each of the nano fingers of the cluster are linked to one another.

Abstract: A surface enhanced infrared absorption stage may include a substrate, a static island extending from the substrate and a movable nano finger extending from the substrate. The static island may have a plasmonically active island cap and a dimension parallel to the substrate of at least one micrometer. The movable nano finger may be aligned with the dimension. The movable nano finger may have a plasmonicaly active finger cap closable to less than or equal to 5 nm of the island cap.

Abstract: An example of an apparatus includes a plurality of wells, wherein each well is to receive a cell culture and a cell culture liquid. The apparatus also includes a collector to contact the cell culture liquid in a well selected from the plurality of wells. The collector is to draw a microfluidic sample of the cell culture liquid from the well. In addition, the apparatus includes a sensor substrate to receive the microfluidic sample, wherein the sensor substrate is to be used to measure a characteristic of the cell culture liquid. Also, the apparatus includes a microfluidic channel to transport the microfluidic sample from the collector to the sensor substrate.

Abstract: A sample preparation system includes a sample input, a first chamber fluidly coupled to the sample input and containing a sample preparation reagent, a second chamber containing a surface enhanced Raman spectroscopy (SERS) sensor structure and a third chamber containing a sensor preparation solution. The sample input, the first chamber and the second chamber are fluidly coupled to one another in a series and the third chamber is fluidly coupled to the third chamber outside of the series so as to sequentially direct a sample received by the sample input through the first chamber to the second chamber and out of the second chamber and so as to direct the sensor preparation solution into the second chamber following discharge of the sample out of the second chamber.

Abstract: A surface enhanced luminescence system may include a laser and a controller to output control signals causing the laser to irradiate the pre-analyte exposed plasmonic surface while maintaining a profile of the pre-analyte exposed plasmonic surface.

Abstract: Fluid classification may include: receiving sensed data for the fluid; modeling the sensed data in a frequency domain; synthesizing a model of the sensed data from the frequency domain to a time domain response and converting the time domain response to a time frequency graphical representation in the form of a color map. Predetermined characteristics of the time frequency graphical representation are identified through computer vision and compared to at least one corresponding signature characteristic of a predetermined fluid type to identify the fluid as a fluid type.

Abstract: A surface enhanced luminescence (SELS) sensor may include a substrate and nano fingers projecting from the substrate. Each of the nano fingers may include a polymer pillar having a sidewall and a top, a coating layer covering the sidewall and a metal cap supported by and in contact with the top of the pillar.

Abstract: A surface enhanced Raman scattering (SERS) sensor may include a substrate, an electrically conductive layer having a first portion spaced from a second portion by a gap, an electrically resistive layer in contact with and extending between the first portion and the second portion of the electrically conductive layer to form an electrically resistive bridge across the gap that heats the nano fingers in response to electrical current flowing across the bridge from the first portion to the second portion and nano fingers extending upward from the bridge.

Abstract: A microfluidic pressure sensor may include a reference chamber, a sensed volume, a microfluidic channel connecting an interior of the reference chamber to an interior of the sensed volume, a volume of liquid contained and movable within the microfluidic channel while occluding the microfluidic channel and a sensor to output signals indicating positioning of the volume of liquid along the microfluidic channel. Positioning of the volume of liquid along microfluidic channel indicates a pressure of the sensed volume.

Abstract: A surfaced enhanced luminescence analyte interrogation stage shipping and storage package may include a sealed chamber, a liquid contained within the sealed chamber and nano pillars within the sealed chamber and submersed within the liquid. The nano pillars comprise polymer posts and metallic caps forming tips of the nano pillars.

Abstract: A surface enhanced luminescence analyte interrogation stage may include a substrate and an array of pillars projecting from the substrate. Each of the pillars may include a polymeric post formed from a first material and a cap on the polymeric post. The cap has a plasmonic surface and is formed from a second material different than the first. A sacrificial coating covers the cap of each of the pillars.

Abstract: An example of an apparatus includes an inlet to receive a plurality of cells suspended in a solution. The apparatus also includes a microfluidic channel to transport the plurality of cells suspended in the solution. In addition, the apparatus includes a trap disposed along the microfluidic channel, wherein the trap is to isolate the plurality of cells suspended in the solution. Also, the apparatus includes a buffer supply to dispense a buffer to wash the plurality of cells and to remove the solution from the microfluidic channel. The apparatus further includes a sensor to measure a characteristic of the plurality of cells after isolated from the solution.

Abstract: A surface enhanced luminescence analyte nano pillar stage may include a substrate, an array of closable pillars extending from the substrate and a fluid supply connected to the array of pillars. The fluid supply is to at least partially replenish fluid amongst the pillars of the array that has evaporated to maintain a level of the fluid amongst the pillars of the array below tops of the pillars.

Abstract: An apparatus may include a lower chamber to contain a culture that emits volatile organic compounds, an upper chamber, a first sensor within the upper chamber, a second sensor within the upper chamber in a transport selector. The second sensor may be different than the first sensor so as to sense volatile organic compounds differently than the first sensor. The transport selector is to transport a selected portion of the volatile organic compounds emitted from the lower chamber to the first sensor and a second portion of the volatile organic compounds emitted from the lower chamber to the second sensor.

Abstract: Optical readers are disclosed in examples herein. An example optical reader including a light source to emit a light beam; and a spot pattern generator to receive the light beam and to generate a two-dimensional spot array from the light beam, the two-dimensional spot array to be directed toward a substrate having nanostructures, the two-dimensional spot array to be sensed to detect a presence or an absence of a substance of interest on the substrate.