scholarly journals Flexible and Transparent Polymer-Based Optical Humidity Sensor

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3674
Author(s):  
Katerina Lazarova ◽  
Silvia Bozhilova ◽  
Sijka Ivanova ◽  
Darinka Christova ◽  
Tsvetanka Babeva
Keyword(s):  
Humidity Sensor ◽  
Amphiphilic Copolymer ◽  
Poly Vinyl Alcohol ◽  
Optical Monitoring ◽  
Optical Contrast ◽  
Successful Development ◽  
Flexible Sensor ◽  
Surface Profiling ◽  
Humidity Range ◽  
Different Levels

Thin spin-coated polymer films of amphiphilic copolymer obtained by partial acetalization of poly (vinyl alcohol) are used as humidity-sensitive media. They are deposited on polymer substrate (PET) in order to obtain a flexible humidity sensor. Pre-metallization of substrate is implemented for increasing the optical contrast of the sensor, thus improving the sensitivity. The morphology of the sensors is studied by surface profiling, while the transparency of the sensor is controlled by transmittance measurements. The sensing behavior is evaluated through monitoring of transmittance values at different levels of relative humidity gradually changing in the range 5–95% and the influence of up to 1000 bending deformations is estimated by determining the hysteresis and sensitivity of the flexible sensor after each set of deformations. The successful development of a flexible sensor for optical monitoring of humidity in a wide humidity range is demonstrated and discussed.

scholarly journals Moisture-Responsive Polymer Films on Flexible Substrates for Optical Sensing of Humidity

2020 ◽  
Vol 2 (1) ◽  
pp. 19
Author(s):  
Katerina Lazarova ◽  
Silvia Bozhilova ◽  
Sijka Ivanova ◽  
Darinka Christova ◽  
Tsvetanka Babeva
Keyword(s):  
Polymer Films ◽  
Poly Vinyl Alcohol ◽  
Thin Polymer Films ◽  
Surface Profiling ◽  
Glass Substrates ◽  
Poly Ethylene Terephthalate ◽  
Thin Polymer ◽  
Influence Of Substrate ◽  
Poly Ethylene ◽  
Different Levels

In this paper, the possibility to design flexible humidity sensors by spin-coating ofmoisture-sensitive polymer on three types of substrates—poly(ethylene terephthalate) (PET),polylactide (PLA) and composite polysiloxane is investigated. The optical properties, surfacemorphology and roughness of the substrates covered with polymer are studied by transmittancemeasurements and surface profiling, respectively. Thin polymer films of amphiphilic copolymerobtained by partial acetalization of poly(vinyl alcohol) are used as humidity sensitive media. Thesensing properties are probed through transmittance measurements at different levels of relativehumidity (RH). The influence of substrate type is studied by comparing the hysteresis of flexiblesensors with those that are deposited on glass substrates.

scholarly journals INTERDISCIPLINARY SYSTEM ARCHITECTURES IN AGILE MODULAR DEVELOPMENT IN THE PRODUCT GENERATION DEVELOPMENT MODEL USING THE EXAMPLE OF A MACHINE TOOL MANUFACTURER

2021 ◽  
Vol 1 ◽  
pp. 1897-1906
Author(s):  
Clemens Birk ◽  
Marc Zuefle ◽  
Albert Albers ◽  
Nikola Bursac ◽  
Dieter Krause
Keyword(s):  
Product Development ◽  
Development Model ◽  
Modular System ◽  
Successful Development ◽  
Development Environment ◽  
System Architectures ◽  
Product Generation ◽  
Mechanical Products ◽  
Machine Manufacturer ◽  
Different Levels

AbstractThis paper considers the orientation of product development structures towards interdisciplinary system architectures using the example of a tool machine manufacturer. Due to the change from simple mechanical products to extensively designed systems, whose successful development requires the integration of all disciplines involved, it is analyzed which requirements there are for these interdisciplinary system architectures in today's development environment. In addition, it is validated on the basis of the investigation environment that interdisciplinary system structures are necessary for the development on the different levels of the system view. In doing so, the investigation environment addresses the concept of extracting customer-relevant features (systems) from a physical-tailored modular system (supersystem) in order to develop and test them autonomously, as well as to transfer them to the entire product range in a standardized manner. The elaboration identifies basic requirements for the development of a knowledge base in interdisciplinary system structures and places them into the context of an agile modular kit development.

An ultrasensitive humidity sensor based on SnO2-modified MoS2 nanocomposite at low-humidity range

2018 ◽  
Author(s):  
Yalei Zhao ◽  
Bin Yang ◽  
Jingquan Liu ◽  
Xiang Chen ◽  
Xiaolin Wang ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
Low Humidity ◽  
Humidity Range

scholarly journals Highly sensitive, room temperature operated gold nanowire-based humidity sensor: adoptable for breath sensing

RSC Advances ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 1157-1164
Author(s):  
Parag V. Adhyapak ◽  
Aishwarya M. Kasabe ◽  
Amruta D. Bang ◽  
Jalindar Ambekar ◽  
Sulabha K. Kulkarni
Keyword(s):  
Relative Humidity ◽  
Room Temperature ◽  
Humidity Sensor ◽  
Gold Nanowire ◽  
Humidity Sensing ◽  
Highly Sensitive ◽  
Resistive Sensor ◽  
Relative Humidity Range ◽  
Humidity Range

A novel, highly sensitive gold nanowire (AuNW) resistive sensor is reported here for humidity sensing in the relative humidity range of 11% to 92% RH as well as for breath sensing.

Poly(vinyl alcohol) nanocomposites containing reduced graphene oxide coated with tannic acid for humidity sensor

Polymer ◽  
2016 ◽  
Vol 84 ◽  
pp. 89-98 ◽  
Author(s):  
Min-Young Lim ◽  
Huiseob Shin ◽  
Dong Myung Shin ◽  
Sang-Soo Lee ◽  
Jong-Chan Lee
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tannic Acid ◽  
Vinyl Alcohol ◽  
Humidity Sensor ◽  
Poly Vinyl Alcohol ◽  
Reduced Graphene
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