公开(公告)号：US20210162656A1

公开(公告)日：2021-06-03

申请号：US16498808

申请日：2018-03-29

Applicant: AGENCY FOR SCIENCE TECHNOLOGY AND RESEARCH

Inventor： Weijie Cyrus Beh ,  Yiqi Seow ,  Sau Yin Chin

IPC: B29C64/129 ,  B29C64/245 ,  B29C64/255 ,  B29C64/286 ,  B29C64/268 ,  B33Y70/00 ,  B33Y30/00 ,  B33Y10/00

Abstract: Systems and methods for continuous printing of a three-dimensional (3D) object are provided. The system includes a resin tank, an optical image source, a support fluid reservoir and a pumping structure. The resin tank is where the 3D object is printed and includes a print bed to form a base of the 3D object. The optical image source modulates light in accordance with a 3D image to vary a degree and pattern of crosslinking in a photocrosslinkable resin in the resin tank. The support fluid reservoir is in fluid communication with the resin tank and includes a support fluid which is immiscible with the photocrosslinkable resin. And the pumping structure is configured to transfer the support fluid from the support fluid reservoir to the resin tank such that the support fluid rises in the resin tank at a same rate as vertical height of a top of the 3D object as the 3D object is printed on the print bed.

公开(公告)号：US11413812B2

公开(公告)日：2022-08-16

申请号：US16498808

申请日：2018-03-29

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Weijie Cyrus Beh ,  Yiqi Seow ,  Sau Yin Chin

IPC: B29C64/129 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/245 ,  B29C64/255 ,  B29C64/286 ,  B29C64/268

Abstract: Systems and methods for continuous printing of a three-dimensional (3D) object are provided. The system includes a resin tank, an optical image source, a support fluid reservoir and a pumping structure. The resin tank is where the 3D object is printed and includes a print bed to form a base of the 3D object. The optical image source modulates light in accordance with a 3D image to vary a degree and pattern of crosslinking in a photocrosslinkable resin in the resin tank. The support fluid reservoir is in fluid communication with the resin tank and includes a support fluid which is immiscible with the photocrosslinkable resin. And the pumping structure is configured to transfer the support fluid from the support fluid reservoir to the resin tank such that the support fluid rises in the resin tank at a same rate as vertical height of a top of the 3D object as the 3D object is printed on the print bed.

公开(公告)号：US11280028B1

公开(公告)日：2022-03-22

申请号：US17496796

申请日：2021-10-08

Applicant: Agency for Science, Technology and Research (A*STAR)

Inventor： Lian Chye Winston Koh ,  Yiqi Seow ,  Siang Shawn Hoon

IPC: C40B40/08 ,  C12N15/10 ,  C40B50/06 ,  C12Q1/6876

Abstract: The present invention relates to an unbiased and simultaneous amplification method for preparing a double-stranded DNA library from a sample of more than one type of nucleic acid. In particular, the present invention provides an unbiased and simultaneous amplification method for preparing a double-stranded DNA library from more than one type of nucleic acid in substantially low amount comparative to non-nucleic acid molecules in the sample within a relatively shorter turnaround time and substantially without any purification step between amplifications and between cDNA preparation and amplification as compared to conventional methods of preparing DNA library.