The present invention provides stretchable, and optionally printable, semiconductors and electronic circuits capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Stretchable semiconductors and electronic circuits of the present invention preferred for some applications are flexible, in addition to being stretchable, and thus are capable of significant elongation, flexing, bending or other deformation along one or more axes. Further, stretchable semiconductors and electronic circuits of the present invention may be adapted to a wide range of device configurations to provide fully flexible electronic and optoelectronic devices.

http://science.sciencemag.org/content/sci/311/5758/208.full.pdf

Stretchable form of single crystal silicon for high performance electronics on rubber substrates

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Methods and devices for fabricating and assembling printable semiconductor elements

Described herein are printable structures and methods for making, assembling and arranging electronic devices. A number of the methods described herein are useful for assembling electronic devices where one or more device components are embedded in a polymer which is patterned during the embedding process with trenches for electrical interconnects between device components. Some methods described herein are useful for assembling electronic devices by printing methods, such as by dry transfer contact printing methods. Also described herein are GaN light emitting diodes and methods for making and arranging GaN light emitting diodes, for example for display or lighting systems.

Printed assemblies of ultrathin, microscale inorganic light emitting diodes for deformable and semitransparent displays

System, devices and methods are presented that integrate stretchable or flexible circuitry, including arrays of active devices for enhanced sensing, diagnostic, and therapeutic capabilities. The invention enables conformal sensing contact with tissues of interest, such as the inner wall of a lumen, a the brain, or the surface of the heart. Such direct, conformal contact increases accuracy of measurement and delivery of therapy. Further, the invention enables the incorporation of both sensing and therapeutic devices on the same substrate allowing for faster treatment of diseased tissue and fewer devices to perform the same procedure.

Systems,methods, and devices having stretchable integrated circuitry for sensing and delivering therapy

Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.

Stretchable and foldable electronic devices

A flexible electronic assembly including a flexible circuit board and at least one electronic component is provided. The flexible circuit board includes at least one dielectric film layer and at least one patterned conductive layer disposed on the dielectric film layer. The electronic component is disposed on the flexible circuit board and electrically connected to the flexible circuit board. The flexible angle of the flexible electronic assembly is greater than 5 degrees.

Flexible electronic assembly

Standard 12-lead electrocardiography (ECG) is the primary tool for detection and diagnosis of cardiovascular diseases (CVDs). Most wearable ECG devices only provide single limb-lead measurement, limiting their practical use in CVD diagnosis. This study proposes a method of chest-lead ECG reconstruction from a single limb lead using a temporal convolutional network (TCN). The TCN is learned in the variational mode decomposition domain to reduce the non-stationary characteristics of ECG data. Experiments on two public databases suggested that automated diagnosis of CVDs in wearable ECG devices is likely to achieve through the proposed approach. 

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1049/ell2.12588

Yu-Hung Chuang

Papers

Flexible electronic assembly

Derivation of chest‐lead ECG from limb‐lead using temporal convolutional network in variational mode decomposition domain