52results about How to "Avoid dead volume" patented technology

The invention relates to a device (1) for filling at least one container (100) with a filling product (110). The device (1) comprises a stationary product tank (2) for receiving the filling product (110), and a rotatable rotor (3) which is connected to a filling element (30) for filling the at least one container (100) with the filling product (110). The rotor (3) is rotatably connected to a line (4) for feeding the filling product (110) to the filling element (30). The line (4) is led into the stationary product tank (2) to direct the filling product (110) of the stationary product tank (2) to the filling element (30).

The invention discloses a long-path optical fiber-microfluidic chip sensor for detecting absorbance and refraction index, which comprises a microfluidic chip made of a transparent material. A detection passage, an incident optical fiber passage and an emergent optical fiber passage are arranged in the microfluidic chip. The detection passage is provided with a sample inlet, a sample outlet, a light incidence port and a light emergence port. The detection passage is arranged between the incident optical fiber passage and the emergent optical fiber passage. The detection passage, the incident optical fiber passage and the emergent optical fiber passage are mutually isolated. Emergent light from the incident optical fiber passage is absorbed by a sample in the detection passage, is reflected by the inner wall surface of a side wall and then shoots into the emergent optical fiber passage. The incident optical fiber passage and the emergent optical fiber passage are respectively matched with optical fibers which are arranged in the incident optical fiber passage and the emergent optical fiber passage. The end surface of the emergent ends of the optical fibers in the incident optical fiber passage and the end surface of the light emergence port of the incident optical fiber passage are on the same level. The end surface of the emergent ends of the optical fibers in the emergent optical fiber passage and the end surface of the light incidence port of the emergent optical fiber passage are at the same level. The long-path optical fiber-microfluidic chip sensor for detecting absorbance and refraction index can realize high-sensitivity biochemical sensing at low sample consumption.

An apparatus and method for fabricating a semiconductor device using a 4-way valve with improved purge efficiency by improving a gas valve system by preventing dead volume from occurring are provided. The apparatus includes a reaction chamber in which a substrate is processed to fabricate a semiconductor device; a first processing gas supply pipe supplying a first processing gas into the reaction chamber; a 4-way valve having a first inlet, a second inlet, a first outlet, and a second outlet and installed at the first processing gas supply pipe such that the first inlet and the first outlet are connected to the first processing gas supply pipe; a second processing gas supply pipe connected to the second inlet of the 4-way valve to supply a second processing gas; a bypass connected to the second outlet of the 4-way valve; and a gate valve installed at the bypass.