Abstract: An energy harvester comprising a base; one or more first resilient means mounted on the base; a hollow chamber having a mounting point pivotally attached to the first resilient means; a hollow member enclosed within the hollow chamber being attached to one or more second resilient means extending from the mounting point in static equilibrium such that the center of mass of the hollow member is aligned with the second resilient means at a vertical axis; a plurality of piezoelectric material-built cantilevers mounted on the hollow member; an integrated circuit connecting the hollow chamber, hollow member, and piezoelectric material-built cantilevers with at least one of a primary storage and a device, wherein the energy is harvested through vibration of the plurality of piezoelectric material-built cantilevers at its approximately resonant frequency, reciprocation of the hollow chamber and the hollow member upon application of a force.

Abstract: The present invention relates to capacitive sensors for measuring humidity and moisture and to an improved process for making the same. The fabrication process for a capacitive sensor having a multi-layer electrodes for measuring humidity and moisture comprising disposing the multi-layer interdigitated electrodes in a multi-layer polyimides; providing a plurality of trenches on the surface of the electrode by lift off process; and covering the sensor with photosensitive negative polyimide.

Abstract: An energy harvester (100) comprising a base (110); one or more first resilient means (120) mounted on the base (110); a hollow chamber (130) having a mounting point (131) pivotally attached to the first resilient means (120) in static equilibrium in such a way that centre of mass of the hollow chamber (130) is aligned with the first resilient means (120) at the vertical axis; a hollow member (140) enclosed within the hollow chamber (130) being attached to one or more second resilient means (150) extending from the mounting point (131) in static equilibrium that centre of mass of the hollow member (140) is aligned with the second resilient means (150) at the vertical axis; a plurality of piezoelectric material-built cantilevers (160) mounted on the hollow member (140) and spaced apart from one another in a predetermined gap at the vertical planar that the piezoelectric material-built cantilevers (160) are varied in length and/or centre of mass; a primary storage (170) associated with the hollow chamber (130),