Handheld Device
Handheld Device - Related Videos
05:40
Handheld Device for Saliva Pretreatment to Improve Cortisol Detection
0 Views •
2026
This protocol describes a rapid saliva pretreatment method for improving cortisol detection. A handheld filtration device is used to remove mucins and other interfering substances while preserving the target analyte. The pretreated saliva exhibits improved capillary flow, thereby enabling more consistent and reproducible assay performance.
08:29
Thermal Measurement Techniques in Analytical Microfluidic Devices
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Cited by 6 •
2015
Here, we present three protocols for thermal measurements in microfluidic devices.
07:22
Measuring the Motor Aspect of Cancer-Related Fatigue using a Handheld Dynamometer
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Cited by 2 •
2020
Simple and accessible methods were developed to measure the motor aspect of cancer-related fatigue objectively and quantitatively. We describe, in detail, ways to administer the physical fatigue test using a simple handgrip device as well as methods to calculate fatigue indices.
08:15
A Microfluidic Device for Studying Multiple Distinct Strains
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Cited by 2 •
2012
We present a simple method to produce microfluidic devices capable of applying similar dynamic conditions to multiple distinct strains, without the need for a clean room or soft lithography.
11:06
Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
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Cited by 4 •
2016
This protocol describes the synthesis and solution deposition of inorganic nanocrystals layer by layer to produce thin film electronics on non-conductive surfaces. Solvent-stabilized inks can produce complete photovoltaic devices on glass substrates via spin and spray coating following post-deposition ligand exchange and sintering.
FAQs
Signals or other measurements first enter through the sample interface, where the device can access material from a specimen or study site. Integrated sensors detect the relevant input, electronics convert that signal into digital data, and software supports display or transmission. This chain matters because it links biological sampling with immediate interpretation without requiring every step to occur in a conventional laboratory.
The sample interface is the point of contact between the instrument and the biological material or environment being examined. Its placement and use determine how the device receives the signal or measurement that sensors process. Keeping this interface close to the specimen or study site supports rapid, local data collection, which is especially useful when decisions depend on timely biological information.
It changes where measurement can occur rather than eliminating the need for conventional instrumentation. Its compact format supports work close to a specimen, field site, or point-of-care setting, while full-scale laboratory access may be limited in those locations. The resulting portability extends analytical methods into settings where immediate measurements would otherwise be difficult to obtain.
Power enables the device to operate away from fixed laboratory infrastructure, while software organizes the incoming digital data for display or transmission. Together, these components affect whether results can be reviewed immediately at the measurement site or shared elsewhere. Their role is therefore practical as well as technical: they connect biological data collection with timely interpretation and decision-making.
A basic workflow begins by bringing the device to the specimen or study site, using the sample interface to collect a biological signal or measurement, and allowing integrated electronics to convert it into digital data. Software then displays or transmits the result for interpretation. This sequence supports field sampling and other situations in which a nearby measurement is more useful than delayed laboratory access.
Applications include field sampling, point-of-care testing, environmental monitoring, and teaching laboratories. In field and environmental work, portability allows measurements near the study site. In point-of-care settings, it supports timely biological decisions, while teaching laboratories benefit when full-scale instrumentation is unavailable. Across these contexts, the main outcome is greater experimental flexibility and broader access to measurement.