▎ 摘　　要

NOVELTY - Sensor (100) by strain-insensitivity, comprises a sheet (103) in electrical communication with a positive electrode and a negative electrode, where the sheet comprises: an electrically conductive primary layer (104) in electrical communication with the positive electrode and the negative electrode; at least one active-sensing region comprising at least one sensor-portion of the primary layer and in electrical communication with the positive electrode and the negative electrode, where the sensor is configured to perform sensing at the at least one active-sensing region; at least one secondary layer (130) covering or encapsulating the primary layer except at each sensor-portion; and at least one perforated region having a perforation design configured to provide for the sensor's strain-insensitivity. USE - The sensor is useful as strain-insensitive sensors. ADVANTAGE - The sensor: is advantageous for wide array of applications where electrical measurements are preferably decoupled from strain experienced by devices, wearable (e.g. skin-mounted) devices, for measuring health-related factors and environmental conditions; provides having island-bridge geometry, where bridge components are capable of physical deformation (e.g. via bending, twisting, buckling, titling) so as to reduce, or avoid, strain for island components, thus providing strain-insensitivity; and enhances electronic and functional properties over their bulk counterparts and readily tunable structures graphene, atomically-thin layer of carbon atoms, is mechanically robust, electrochemically stable, and biocompatible, which makes it a promising mate material for flexible or wearable sensors. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (a) sensor; and (b) making strain-insensitive sensor. DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of the train-insensitive graphene electrode. Sensor (100) Sheet (103) Electrically conductive primary layer (104) Secondary layer (130)