Abstract: Hybrid structured materials are composed of hard cell structures connected by soft components such as soft networks, soft hinges, or bilayer joints. The soft components are responsive to external stimuli such as mechanical loads, temperature changes, humidity, and electric-magnetic fields. Due to the structural design and responsive properties of the soft components, the structured materials have a wide range of tunable expansion coefficients, including both positive expansion coefficients and negative expansion coefficients. The expansion can be induced by the external stimuli. Depending on the stimuli, the expansion coefficients can be thermal expansion coefficients (CTE), coefficients of moisture expansion (CME), etc.

Abstract: A method and a system of performing security inspection of human body based on millimeter-wave. The method includes: displaying, by a first display device, information related to a designated posture to a person to be inspected before the person enters an inspection channel defined by a millimeter-wave human body security inspection instrument, the designated posture being expected to be taken by the person when scanning the person with the instrument; guiding the person to enter the inspection channel and stand at a designated standing position within the inspection channel in a standing posture substantially complying with the designated posture; scanning, by the instrument, the person, to obtain millimeter-wave scanning data; and performing, by a workstation, a reconstruction of millimeter-wave scanning image of the person, a confirmation for the standing posture of the person, and a recognition of a suspected item of the person, based on the millimeter-wave scanning data.

Abstract: Provided is a server of a checking system based on a millimeter wave security inspection device, connected to a security inspection instrument through a switching system, the server includes a memory and a processor, the memory stores instructions, and the instructions, when executed by the processor, cause the processor to: receive a scanned image of an object and an ATR image interpretation result of the object from the security inspection instrument, wherein the ATR image interpretation result is obtained by the security inspection instrument performing an automatic threat recognition (ATR) image interpretation on the scanned image, and perform a manual inspection task on the object and perform an image interpretation task on the scanned image according to a working mode, wherein the working mode indicates whether the checking system is provided with a manual inspection station and an image interpretation station.

Abstract: An auxetic structure includes a plurality of polyhedral units arranged adjacent one another to form a three-dimensional structure. Each polyhedral unit has protrusions extending orthogonally from some surfaces thereof and recesses formed in other surfaces thereof. The protrusions of each polyhedral unit are slidingly received in corresponding recesses of adjacent polyhedral units. A plurality of sleeves are positioned around each protrusion and in a corresponding recess. The sleeves are formed from a softer material than the protrusions. An auxetic effect is achieved by shear-induced displacement of the protrusions in corresponding recesses.

Abstract: The present invention is directed at materials and methods for their formation having wavy network structures dispersed in a second and relatively harder phase. The materials can be designed to exhibit auxetic properties (e.g. a negative Poisson's ratio) in response to an application of force.

Abstract: An auxetic polygonal cell may have a plurality of chiral structures capable of rotation. The plurality of chiral structures may at least partially enclose a volume. Each of the chiral structures may include a first cross member having a first set of distal ends and a second cross member intersecting the first cross member, the second cross member having a second set of distal ends. The chiral structures may also include a first set of legs, wherein each leg of the first set of legs extends from at least one distal end of the first set of distal ends and a second set of legs, wherein each leg of the second set of legs extends from at least one distal end of the second set of distal ends.

Abstract: The present disclosure provides methods, devices and systems that enable determination of spatial information of biological molecules by reacting the biological molecules with a zipcode array. In some examples, the zipcode array may code for the spatial positions of biological molecules attached to distinct positions on the zipcode array. In some examples, the spatial positions are 2-dimensional. In some cases, the spatial positions are 3-dimensional. In some examples, the present disclosure provides methods to detect spatial gene expression. In some examples, the present disclosure provides methods to detect spatial distribution of proteins.

Abstract: The present invention is directed at materials and methods for their formation having wavy network structures dispersed in a second and relatively harder phase. The materials can be designed to exhibit auxetic properties (e.g. a negative Poisson's ratio) in response to an application of force.

Abstract: An auxetic structure consistent with the present disclosure may include a core cell, capable of rotation, including a plurality of first rib sections, and a plurality of second rib sections. The first rib sections may be transverse to a longitudinal axis of the auxetic structure and at least one of the first rib sections may extend from the core cell. The second rib sections may be transverse to a transverse axis of the auxetic structure and at least one of the second rib sections may extend from the core cell.

Abstract: An auxetic polygonal cell may have a plurality of chiral structures capable of rotation. The plurality of chiral structures may at least partially enclose a volume. Each of the chiral structures may include a first cross member having a first set of distal ends and a second cross member intersecting the first cross member, the second cross member having a second set of distal ends. The chiral structures may also include a first set of legs, wherein each leg of the first set of legs extends from at least one distal end of the first set of distal ends and a second set of legs, wherein each leg of the second set of legs extends from at least one distal end of the second set of distal ends.

Abstract: A bi-axial testing apparatus, system and method may be used with known uni-axial material testing machines to perform biaxial displacement control (e.g., compressive and/or tensile) testing on a specimen. As such, the apparatus, system and method may be capable of providing bi-axial compressive or tensile loads with uni-axial motion and only one actuator. The specimen may be a cubic specimen including, without limitation, 3D printed cellular materials, composite materials, foams, bio-medical materials, and the like. The apparatus generally includes a first or top fixture forming a first re-entrant surface and a second or bottom fixture forming a second re-entrant surface. When the fixtures are mounted, the re-entrant surfaces form a testing space in the center to accommodate a specimen to be tested and the re-entrant surfaces provide testing forces in two axes in response to an actuator providing motion of at least one of the fixtures in one axis.

Abstract: An auxetic structure consistent with the present disclosure may include a core cell, capable of rotation, including a plurality of first rib sections, and a plurality of second rib sections. The first rib sections may be transverse to a longitudinal axis of the auxetic structure and at least one of the first rib sections may extend from the core cell. The second rib sections may be transverse to a transverse axis of the auxetic structure and at least one of the second rib sections may extend from the core cell.

Abstract: One aspect of the invention relates to materials and devices with interface layers with geometries which transform upon the direct or indirect application of load or displacement. The interface layers may transform from straight or flat shapes to wavy or hierarchically wavy morphologies or the waviness can be altered by load or displacement to tailor wavelength and amplitude of the interface geometry. Methods of predictably altering the interfacial morphology are also described. The ability to control material interface transformation can be used to regulate and to tune mechanical, chemical, thermal, swelling, photonic, phononic, electrical and optical functions, including color and reflectivity of the material.

Abstract: Disclosed is a double-sided color photographic paper, including, in order, a first protection layer, a first photosensitive layer, a supporting substrate, a second photosensitive layer and a second protection layer. The supporting substrate has a first surface and a second surface opposite to the first surface. A first barrier layer and at least one layer of a first shading layer are sandwiched between the first photosensitive layer and the first surface of the supporting substrate. The first barrier layer is arranged between the first photosensitive layer and the first shading layer; a second barrier layer and at least one layer of a second shading layer are sandwiched between the second surface of the supporting substrate and the second photosensitive layer, and the second barrier layer is arranged between the second shading layer and the second photosensitive layer.

Abstract: Disclosed is a double-sided color photographic paper, including, in order, a first protection layer, a first photosensitive layer, a supporting substrate, a second photosensitive layer and a second protection layer. The supporting substrate has a first surface and a second surface opposite to the first surface. A first barrier layer and at least one layer of a first shading layer are sandwiched between the first photosensitive layer and the first surface of the supporting substrate. The first barrier layer is arranged between the first photosensitive layer and the first shading layer; a second barrier layer and at least one layer of a second shading layer are sandwiched between the second surface of the supporting substrate and the second photosensitive layer, and the second barrier layer is arranged between the second shading layer and the second photosensitive layer.