The present example embodiment relates generally to creating a specific nanostructure on a substrate to improve the angle independence of a surface plasmon resonance mode. It may comprise a metamaterial structure comprising nanostructures located in a pattern on or within a substrate. The nanostructures may be paraboloid shaped and periodic.

The disclosure provides a diagnosis and treatment integrated soft medical robot for gastrointestinal endoscopy, including a robot body, a camera, illumination devices, a flexible dielectric elastomer actuator, air cylinders, linear motors, a controller and external hoses. Wherein the robot body is a multichannel hose, and includes a central channel and circumferential channels, the central channel is configured to accommodate conducting wires and signal wires, the circumferential channels include at least three microfluid channels. The front end of each microfluid channels is a sealed end, a rear end of each of the microfluid channels is an open end. The open end of each microfluid channels communicates with an end opening of a flow channel of one air cylinder. The linear motors control fluid pressures in the microfluid channels by driving piston rods of the air cylinders so that the robot body steers through being driven by fluid. The camera performs real-time image acquisition. The controller controls the flexible dielectric elastomer actuator to capture a target. The disclosure realizes the real-time image acquisition on a digestive tract, particularly a lesion, and can integrally and fast complete diagnosis and treatment.

An electrode includes a living body contact portion that is to be in contact with a living body and that contains a rubber material and at least one carbon material selected from carbon nanotubes and graphene. The ratio of the volume resistivity of the living body contact portion to the surface resistivity of the living body contact portion is 1.2 or more. The amount of the carbon material in the living body contact portion is 3 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the rubber material, or the living body contact portion has a 25% compression hardness of 20 kPa or more and 110 kPa or less.

A wireless sensor platform design and a single walled carbon nanotube/ionic liquid-based chemidosimeter system can incorporated into a highly sensitive and selective chemical hazard badge that can dosimetrically detect an analyte down to a sub parts-per-million concentration.

A brainwave signal collecting device includes a main part and an elastic sleeve having a first opening. The main part is installed on the elastic sleeve, and the elastic sleeve can be positioned by suction on a user's head through the first opening after being pressed. The main part is in contact with the head to collect brainwave signals. The brainwave signal collecting device has an elastic sleeve serving as a flexible piece. When the brainwave signal collecting device is worn, the elastic sleeve can be pressed to partly exhaust the air therein so as to be positioned by suction on the head by the first opening of the elastic sleeve, which can improve the comfort of the head in contact with the elastic sleeve; and the position and angle at which the main part contacts the head can be adjusted through the deformation of the elastic sleeve.

A biosensing device for continuous monitoring of an analyte in a fluid matrix includes an electromagnetic excitation element [402], a biosensing surface [406], an opposing surface [410], a separation component [420,422], light collection optics [412], a light sensor [414], an image recording and analysis system [416], and an excitation control system [400]. The separation component is connected to the biosensing surface and to the opposing surface, forming a concave gap region [408] between the biosensing surface and the opposing surface. The biosensing surface comprises biosensing particles sensitive to electromagnetic signals from the electromagnetic excitation element, where an optical response of the biosensing particles to the electromagnetic signals is adapted to change in the presence of an analyte in the gap region. The light collection optics couple light emitted from the biosensing particles on the biosensing surface to the light sensor. The image recording and analysis system is connected to the light sensor and processes light signals from the biosensing particles to determine presence or absence or concentration of the analyte in the fluid matrix.

A reflectionless window is disclosed. The reflectionless window comprises: a transparent window; a plurality of first nanocolumns arranged on a first surface of the transparent window; and a plurality of second nanocolumns having a height smaller than that of the first nanocolumns, the plurality of second nanocolumns being arranged on at least one surface selected from the upper surface of the plurality of first nanocolumns and a side surface thereof and being arranged in an area on the first surface of the transparent window in which the plurality of first nanocolumns are not arranged.

Disclosed are self-powering biofuel cell and sensor devices, systems and techniques. In some aspects, a self-powered biosensing system includes an electronic circuit; an anode including an enzymatic layer electrically coupled to a power supply voltage terminal of the electronic circuit and configured to interact with an analyte in a fluid, such as glucose or lactate; and a cathode electrically coupled to a ground voltage terminal of the electronic circuit, where the electronic circuit is operable to control and use the electrical energy generated at the anode and cathode for powering the biosensing system and detecting a concentration of the analyte in the fluid.

An intracellular monitoring device (IMD) that fits completely inside a living cell, and causes no significant impairment, to a cell's normal biological processes. The IMD monitors a cell for its level of a biological substance (e.g., calcium ion concentration) of interest. If the biological substance reaches or exceeds a threshold, the IMD transmits an electromagnetic signal, received by an antenna outside the cell. Each IMD has its electromagnetic signal encoded with a unique frequency. Detection of the frequency components, in the signals received by an antenna, permits identification of the source IMD's. A high calcium ion concentration is indicative of a strongly-activated cerebral cortex neuron. Brain tissue is relatively transparent to near infrared, making it a good frequency band, for the electromagnetic signals from neuron-monitoring IMD's. The near infrared of each IMD can be produced by quantum dots, powered by bioelectric catalysis triggered by high calcium ion concentration.

A physical area network for detecting head injuries described herein enables significantly improved cranial health monitoring and treatment by utilizing internal (in-body) mechanisms and information and external mechanisms and information.