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Title: Printed hygroscopic electrodes for low-cost capacitive relative humidity sensors

Abstract

A capacitive relative humidity sensor includes a first electrode and a second electrode, where at least the one of the electrodes is a water-permeable electrode. The electrodes act in conjunction with a water-sensitive hygroscopic dielectric material. The design enables low-cost and simple fabrication of fast-responding and stable relative humidity sensors using digital fabrication techniques.

Inventors:
; ;
Issue Date:
Research Org.:
Palo Alto Research Center Inc., Palo Alto, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1859939
Patent Number(s):
11143615
Application Number:
16/176,067
Assignee:
Palo Alto Research Center Incorporated (Palo Alto, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
NL0032095; 4000152637
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/31/2018
Country of Publication:
United States
Language:
English

Citation Formats

Pierre, Adrien, Doris, Sean Emerson, and Schwartz, David Eric. Printed hygroscopic electrodes for low-cost capacitive relative humidity sensors. United States: N. p., 2021. Web.
Pierre, Adrien, Doris, Sean Emerson, & Schwartz, David Eric. Printed hygroscopic electrodes for low-cost capacitive relative humidity sensors. United States.
Pierre, Adrien, Doris, Sean Emerson, and Schwartz, David Eric. Tue . "Printed hygroscopic electrodes for low-cost capacitive relative humidity sensors". United States. https://www.osti.gov/servlets/purl/1859939.
@article{osti_1859939,
title = {Printed hygroscopic electrodes for low-cost capacitive relative humidity sensors},
author = {Pierre, Adrien and Doris, Sean Emerson and Schwartz, David Eric},
abstractNote = {A capacitive relative humidity sensor includes a first electrode and a second electrode, where at least the one of the electrodes is a water-permeable electrode. The electrodes act in conjunction with a water-sensitive hygroscopic dielectric material. The design enables low-cost and simple fabrication of fast-responding and stable relative humidity sensors using digital fabrication techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {10}
}

Works referenced in this record:

A high-sensitivity polyimide capacitive relative humidity sensor for monitoring anodically bonded hermetic micropackages
journal, June 2001


Flexible polymer humidity sensor fabricated by inkjet printing
conference, June 2011


Large-area compatible fabrication and encapsulation of inkjet-printed humidity sensors on flexible foils with integrated thermal compensation
journal, January 2013


Capacitive Humidity Sensor with Graphene Electrode
patent-application, June 2015


High sensitivity capacitive humidity sensor with a novel polyimide design fabricated by MEMS technology
conference, January 2009


All additive inkjet printed humidity sensors on plastic substrate
journal, May 2012