48results about How to "Objective reality" patented technology

The invention relates to a cholera diagnosis microfluidic device with a fast-to-remove liquid flow driving accessory, and belongs to the field of analytical testing. The cholera diagnosis microfluidic device with the fast-to-remove liquid flow driving accessory aims to solve related problems that a series of difficulties actually exist when cheap and easy-to-process polydimethylsiloxane (PDMS) is utilized to prepare a substrate of a micro-fluidic chip for cholera diagnosis, and the effect of targeted surface modification or surface finish is difficult to last due to strong hydrophobicity of the surface of a PDMS material. Main points of the cholera diagnosis microfluidic device with the fast-to-remove liquid flow driving accessory are as follows: the PDMS with an original ecological surface is selected as the substrate, an elastic force clip is elastically snapped and positioned in a position near a sample liquid flow terminal of the microfluidic chip, wherein miniature ultrasonic transducers are attached to clamping arms of the elastic force clip, meanwhile an ultrasonic attenuator is installed at the sample feeding end of the microfluidic chip so as to achieve a rapid ultrasonic wave intensity decline in a short distance, so that an interfacial tension difference can be formed at both ends of the chip, and a sample flow is facilitated to flow along a capillary channel to the direction of the terminal.

The invention relates to a multichannel chip device with PDMS as a substrate material and for cholera diagnosis and belongs to the field of analysis and testing. By using cheap and easily-processablepolydimethylsiloxane, namely PDMS for manufacturing a substrate of a microfluidic chip for cholera diagnosis, a series of problems actually exist. The surface of the PDMS material is strongly hydrophobic. Through targeted surface modification, the effect is hard to last. The scheme aims to solve the series of related problems. According to main points, PDMS with primitive surface is selected as the substrate, a hinge-type fixture attached with a miniature ultrasonic transducer is manually fastened and positioned near the terminal of a sample liquid fluid of the microfluidic chip, interfacial tension is reduced by ultrasonic wave, and by PDMS's strong absorption of ultrasonic wave, ultrasonic intensity is rapidly decreased progressively in a short distance to form interfacial tension difference between two ends of the chip. Thereby, the sample liquid fluid flows along an originally hydrophobic capillary channel towards the terminal.

The invention relates to a microfluidic chip device for simultaneously detecting multiple typical tumor markers of women, belonging to the field of analysis and testing. Using PDMS or polydimethylsiloxane to make the substrate of the microfluidic chip for the joint detection of eight typical tumor markers suitable for women has advantages in price and technology, but there are also difficulties; this case aims to overcome this difficulty . The main point of this case is that the PDMS with the original ecological surface is selected as the substrate, and the elastic clamp with the micro-ultrasonic transducer attached to the clamping arm is elastically positioned on the sample liquid flow terminal of the microfluidic chip and its neighbors. position, using ultrasonic waves to reduce interfacial tension and increase interfacial compatibility. At the same time, the strong absorption ability of PDMS to ultrasonic waves can be used to achieve a rapid decrease in ultrasonic intensity in a short distance, thereby forming a difference in interfacial tension at both ends of the chip, thereby facilitating the test. The sample liquid flows toward the terminal along the originally hydrophobic capillary channel. The device is completely free of micropumps.