Abstract:
AN APPARATUS FOR SOLAR TRACKING USING MINIMAL ENERGY IS DESCRIBED. A PRISMATIC ENERGY HARVESTER (10) IS POSITIONED ABOVE A SPRING (20). THE HARVESTER HAS A PAIR OF EARS (14) AT BOTH SIDE OF THE TOP PORTION OF THE HARVESTER. THE EAR IS MOVED BY STRINGS (16) FROM A REEL (18) CONNECTED TO A BOX OF MOTOR (12). AT LEAST TWO PHOTO-RESISTIVE ELEMENTS TRACK THE SUN RAYS INTENSITY TO IDENTIFY THE POSITION OF THE SUN. THEN, THE MOTOR ADJUST THE REELS TO ROTATE THE HARVESTER USING STRINGS UNTIL THE HARVESTER AND THE SUN IS AT RIGHT ANGLE. THE PHOTO-RESISTIVE ELEMENTS CONTINUOUSLY TRACK THE SUN SO THAT THE HARVESTER CAN BE ROTATED TOWARDS THE SUN AT RIGHT ANGLE.
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 (2, 9) IN A MULTI-LAYER POLYIMIDES (5, 6, 7); PROVIDING A PLURALITY OF TRENCHES (12) ON THE SURFACE OF THE ELECTRODE BY LIFT OFF PROCESS; AND COVERING THE SENSOR WITH PHOTOSENSITIVE NEGATIVE POLYIMIDE.
Abstract:
VIBRATORY SENSOR 5 A CAPACITOR COMPRISES A DIELECTRIC BASE LAYER (4A) DEFINED BY TOP, FIRST AND SIDE SURFACES; A PLURALITY OF FIRST DRIVEN ELECTRODE (I 5) HAVING TIPS AND EDGES DEPOSITED ON THE TOP SURFACE OF THE DIELECTRIC BASE LAYER (4A) THAT EACH ARE SPACED APART AT THE EDGES BY A PREDETENNINED GAP; A PLURALITY OF FIRST SENSING ELECTRODE (16) HAVING TIPS AND EDGES THAT EACH OF THE FIRST SENSING ELECTRODE (16) IS DEPOSITED AT EACH OF THE 10 PREDETEN-NINED GAP IN BETWEEN TWO FIRST DRIVEN ELECTRODES (15) WITH A PREDETERMINED DISTANCE IN BETWEEN THE FIRST SENSING (16) AND FIRST DRIVEN ELECTRODES (15); A PLURALITY PAIR OF PROTRUSION (20) EXTENDS UPWARD FROM THE TOP SURFACE OF THE DIELECTRIC BASE LAYER (4A) AT THE TIPS OF THE FIRST DRIVEN ELECTRODES (I 5) AND THE FIRST SENSING ELECTRODES (I 6); A SECOND DRIVEN ELECTRODE (IO) OR A SECOND SENSING ELECTRODE (II) ARE POSITIONED 1 5 OVERHEAD OF EACH FIRST DRIVEN ELECTRODE (15) AND FIRST SENSING ELECTRODE (16) RESPECTIVELY BY ANCHORING ONTO THE CORRESPONDING PAIR OF PROTRUSIONS (20) WITH A VOID LEFT BETWEEN EACH SECOND AND FIRST ELECTRODES.- WHEREBY THE SECOND DRIVEN (10) AND SECOND SENSING (I 1) ELECTRODES VIBRATE UP AND DOWN BY APPLYING A BIAS VOLTAGE ONTO THE FIRST DRIVEN (I 5) AND FIRST SENSING (I 6) ELECTRODES THUS ABLE TO MANIPULATE 20 PENETRATION DEPTH OF QUASI-STATIC ELECTRIC FIELD LINES PRODUCED FROM THE SECOND DRIVEN (I 0) AND SECOND SENSING ELECTRODES (I 1) INTO A MATERIAL UNDER TEST. (MOST ILLUSTRATED BY
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.