Evaluation of Co-Polyaniline nanocomposite thin films as humidity sensor

被引：47

作者：

Fuke, Madhavi V. ^{[1
]}

Vijayan, Anu ^{[1
]}

Kulkarni, Milind ^{[2
]}

Hawaldar, Ranjit ^{[2
]}

Aiyer, R. C. ^{[1
]}

机构：

[1] Univ Pune, Dept Phys, Ctr Sensor Studies, Pune 411007, Maharashtra, India

[2] Ctr Mat Elect Technol, Pune 411008, Maharashtra, India

来源：

TALANTA | 2008年 / 76卷 / 05期

关键词：

composites; polymers; nanostructures; optical properties;

D O I：

10.1016/j.talanta.2008.04.064

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Spin coated films of Co-Polyaniline nanocomposite are evaluated for their transmission properties using He-Ne laser for humidity sensing. The thickness (17-29 mu m) of the films is varied by multiple deposition of Co-Polyaniline nanocomposite on a glass substrate. The samples exhibit typically two to three regions in their sensitivity curve when tested in the relative humidity (RH) range of 20-95%. The sensitivity ranges from 0.1 mV/%RH to 12.26 mV/%RH for lower to higher thickness. The sensors show quick response of 8s (20-95%RH), and a recovery time of 1 min (95-20%RH) with good repeatability, reproducibility and low hysteresis effect. The sensitivity of the sensor increases with humidity and thickness. Material characterization is done by X-ray diffraction (XRD), scanning electron micrograph (SEM) and Fourier transform infra-red spectroscopy (FTIR). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1035 / 1040

页数：6

共 13 条

[1] THE EFFECT OF HUMIDITY ON AN SNO2 THICK-FILM PLANAR RESISTOR [J].

ANSARI, SG ;

ANSARI, ZA ;

KADAM, MR ;

KAREKAR, RN ;

AIYER, RC .

SENSORS AND ACTUATORS B-CHEMICAL, 1994, 21 (03) :159-163

[2] Humidity sensor using planar optical waveguides with claddings of various oxide materials [J].

Ansari, ZA ;

Karekar, RN ;

Aiyer, RC .

THIN SOLID FILMS, 1997, 305 (1-2) :330-335

[3] Polymeric films in optical gas sensors [J].

Brook, TE ;

Narayanaswamy, R .

SENSORS AND ACTUATORS B-CHEMICAL, 1998, 51 (1-3) :77-83

[4] Humidity sensing with weak acid-doped polyaniline and its composites [J].

Jain, S ;

Chakane, S ;

Samui, AB ;

Krishnamurthy, VN ;

Bhoraskar, SV .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 96 (1-2) :124-129

[5] An evanescent-wave optical fiber relative humidity sensor with enhanced sensitivity [J].

Khijwania, SK ;

Srinivasan, KL ;

Singh, JP .

SENSORS AND ACTUATORS B-CHEMICAL, 2005, 104 (02) :217-222

[6] Synthesis, characterization, and morphology of p-toluene sulfonic acid-doped polyaniline:: A material for humidity sensing application [J].

Kulkarni, MV ;

Viswanath, AK ;

Aiyer, RC ;

Khanna, PK .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2005, 43 (16) :2161-2169

[7] HUMIDITY SENSORS [J].

KULWICKI, BM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1991, 74 (04) :697-708

[8] Humidity sensor based on ultrathin polyaniline film deposited using layer-by-layer nano-assembly [J].

Nohria, R ;

Khillan, RK ;

Su, Y ;

Dikshit, R ;

Lvov, Y ;

Varahramyan, K .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 114 (01) :218-222

[9] Humidity sensing and electrical properties of polyaniline/cobalt oxide composites [J].

Parvatikar, Narsimha ;

Jain, Shilpa ;

Kanamadi, C. M. ;

Chougule, B. K. ;

Bhoraskar, S. V. ;

Prasad, M. V. N. Ambika .

JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 103 (02) :653-658

[10] Spectroscopic and electrical properties of polyaniline/CeO2 composites and their application as humidity sensor [J].

Parvatikar, Narsimha ;

Jain, Shilpa ;

Bhoraskar, S. V. ;

Prasad, M. V. N. Ambika .

JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 102 (06) :5533-5537

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