Abstract: The invention discloses a multifunctional spinning device, comprising a solution storage apparatus, a solution spraying apparatus, a solution delivery apparatus, a drive apparatus, a high-voltage power supply apparatus, and a fiber collecting apparatus. The device not only realizes production of micron and nano fibers with multiple structures or a mixture thereof on one device, but also greatly improves the production yield thereof, tremendously reduces a voltage value of the required high-voltage electrostatic field, even does not require involvement of the high-voltage electrostatic field, reduces costs, and improves production safety.

Abstract: The disclosed method presents a method of fabrication of wrapped multi-scale nano-to-micro fibrous structures near-similar to extracellular matrix (ECM) structure. The resulting materials finely mingle nano-scale fibers on micro-scale fibers to form a composite structure with defined responsibility of each fiber category for diffident application including soft-tissue engineering. This composite-like structure of the fibrous material may be helpful in cell differential regulation when different cell types are necessary in a tissue. This hierarchically structure of nanofibers, as a cell-adhesive matrix, on the micro-scale fibers, as an elastomeric structural component, present a favorable structure most similar to the natural ECM and therefor acts as a growth factors for recruitment and cell proliferation within the structure.

Abstract: The invention discloses a multifunctional spinning device, comprising a solution storage apparatus, a solution spraying apparatus, a solution delivery apparatus, a drive apparatus, a high-voltage power supply apparatus, and a fiber collecting apparatus. The device not only realizes production of micron and nano fibers with multiple structures or a mixture thereof on one device, but also greatly improves the production yield thereof, tremendously reduces a voltage value of the required high-voltage electrostatic field, even does not require involvement of the high-voltage electrostatic field, reduces costs, and improves production safety.

Abstract: A polymerase chain reaction (PCR) device including a chip assembly, a plurality of chambers being provided in said chip assembly adapted to hold samples, heating means wherein said chip assembly being located on said heating means whereby said chip assembly is allowed to operatively rotate on said heating means, a rotary wheel aiding said chip rotation and wherein said heating means comprises of plural temperature zones in a manner that on rotation of said chip means said sample chamber is shifted from one temperature zone to another by means of a rotary-linear motion system.