Truly wearable sensing poses challenges in many areas. To be successful, wearable sensors must preserve wearer comfort while providing accurate sensor data. Further, for widespread commercial production they must also be compatible with soft goods manufacturing. Here, we present a method of fabricating stretch sensors using common apparel sewing machinery. The response of sensors made using ind...

This paper investigates the possibility to classify isolated human activities from biosignal sensors integrated into a knee orthosis. An intelligent orthosis that is capable to recognize its wearers activity would be able to adapt itself to the users situation for enhanced comfort. We use a setup with three modalities: accelerometry, electromyography and goniometry to measure leg motion and mus...

Biosensors composed of biomolecules and electromechanical components have enabled new sensing modalities for chemical sensing, pathogen detection and disease therapy. Traditional biosensors are silicon-based, but silicon has a known limited radiation lifetime. Gallium nitride (GaN), however, is radiationhard and shows potential for use in biosensors to detect radiation. To support the developme...

Adhesively bonded structures are potentially lighter in weight than mechanically fastened ones, but existing surface treatments are often considered unreliable. Two main problems in achieving reproducible and durable adhesive bonds are surface contamination and variability in standard surface preparation techniques. In this work three surface pretreatments were compared: laser etching with and ...

Despite considerable effort, the fabrication of protein chips using a self-assembled monolayer (SAM) with a long chain remains a challenge, due to its steric hindrance and the formation of disulfides, which may generate multilayers and block the terminal carboxylate groups of the SAMs, and thus reduce the sensitivity of the chips. To eliminate those problems, the feasibility of using a short-ch...

The spectral specular reflectance of conventional and novel reflective materials for solar concentrators is measured with an acceptance angle of 17.5 mrad over the wavelength range 300-2500 nm at incidence angles 15-60° using a spectroscopic goniometry system. The same experimental setup is used to determine the spectral narrow-angle transmittance of semi-transparent materials for solar collect...

A series of submonolayer deposition studies of oleic acid on both hydrophobic and hydrophilic surfaces has shown that oleic acid self-associates into islands rather than uniformly covering the surfaces. The studies were performed by vapor deposition on 1.6 mum diameter polystyrene aerosol particles as well as on polystyrene and silica surfaces. The surfaces were investigated by scanning electro...

We are of the opinion that students of an introductory materials science and engineering course should gain a thorough understanding of crystallographic core concepts by applying them quasi-experimentally in computer simulation sessions that run parallel to the lectures. Software simulations of goniometry of direct lattice vectors in a transmission electron microscope (TEM) will serve two purpo...

The open architecture of cathodes in Li–air batteries implies the need for porosity with adequate pore size distribution and surface energy optimization regard to electrolyte. interaction liquid cathode material, especially wetting properties, which depend on roughness porosity, electrolyte needs be understood properly avoid flooding assure high active areas. In this work, contact angle goniome...

Surfaces with antifouling properties are critical for optimizing biosensors to improve the selectivity and specificity of analyte detection in complex biological samples. This work describes four-step synthesis 3-dithiothreitol propanoic acid (DTTCOOH), a new thiol linker that (a) significantly reduces fouling raw human serum samples (b) binds amino receptors via its terminal carboxylic group. ...