Abstract: A method and an apparatus for sorting and identifying single cells. The method includes a liquid supplying step, first nozzle imaging and recognizing step, single cell printing and imaging step, and second nozzle imaging step. The present disclosure adopts a high-throughput microfluidic design of thermal bubble printing chip and image recognition, which can expel the single cells gently and efficiently, thereby obtaining a high volume of single cells with high single cell yield and high single cell activity quickly. The method recognizes single cells based on cellular morphological features, facilitating obtaining single cells with high activity. Furthermore, the method provides the appearance of single cells on day zero, an important criterion for single cell analysis. The apparatus of the present disclosure provides a comprehensive solution for cellular experiments by monitoring the cell growth and locating the target cells based on fluorescent markers after single cell sorting.

Abstract: A semi-transparent semi-retroreflective film and an air display device are provided. The air display device includes: a first polarizer and a second polarizer assembled with each other to form a cell; a semi-transparent semi-reflective structure and a semi-transparent semi-retroreflective film disposed between the first polarizer and the second polarizer; a first ¼ wave plate disposed at a side of the air display device adjacent to the first polarizer; and a second ¼ wave plate disposed between the semi-transparent semi-reflective structure and the semi-transparent semi-retroreflective film. The air display device is configured such that polarized light incident from the first polarizer, after being processed by an internal optical path of the air display device, exits from the second polarizer to form an air image at a side of the air display device away from the first polarizer.

Abstract: The present application discloses biopolymer-based ink formulations that are useful for inkjet printing and other applications. Related methods are also disclosed.

Abstract: A semi-transparent semi-retroreflective film and an air display device are provided. The air display device includes: a first polarizer and a second polarizer assembled with each other to form a cell; a semi-transparent semi-reflective structure and a semi-transparent semi-retroreflective film disposed between the first polarizer and the second polarizer; a first ¼ wave plate disposed at a side of the air display device adjacent to the first polarizer; and a second ¼ wave plate disposed between the semi-transparent semi-reflective structure and the semi-transparent semi-retroreflective film. The air display device is configured such that polarized light incident from the first polarizer, after being processed by an internal optical path of the air display device, exits from the second polarizer to form an air image at a side of the air display device away from the first polarizer.

Abstract: The present invention provides compositions and methods for printing a predetermined pattern on silk fibroin materials using water based “inks.” Such technique may be useful for micro- and nano-engineering applications.

Abstract: Systems and methods for precision inkjet printing are disclosed. A method determining an actuation parameter associated with a pressure waveform. Based on the pressure waveform, the method also includes actuating a print head to eject a droplet from a nozzle and acquiring an image of the droplet. The method further includes processing the acquired image to estimate a volume of the droplet and based on the estimated volume of the droplet and a target volume, adjusting the actuation parameter.

Abstract: The present application discloses biopolymer-based ink formulations that are useful for inkjet printing and other applications. Related methods are also disclosed.

Abstract: The present application discloses biopolymer-based ink formulations that are useful for inkjet printing and other applications. Related methods are also disclosed.

Abstract: Systems and methods for precision inkjet printing are disclosed. A method determining an actuation parameter associated with a pressure waveform. Based on the pressure waveform, the method also includes actuating a print head to eject a droplet from a nozzle and acquiring an image of the droplet. The method further includes processing the acquired image to estimate a volume of the droplet and based on the estimated volume of the droplet and a target volume, adjusting the acquisition parameter.

Abstract: The present invention provides compositions and methods for printing a predetermined pattern on silk fibroin materials using water based “inks.” Such technique may be useful for micro- and nano-engineering applications.

Abstract: The present application discloses biopolymer-based ink formulations that are useful for inkjet printing and other applications. Related methods are also disclosed.