PDMAA Hydrogel Coated U-Bend Humidity Sensor Suited for Mass-Production

Kelb, Christian; Körner, Martin; Prucker, Oswald; Rühe, Jürgen; Reithmeier, Eduard; Roth, Bernhard

doi:10.3390/s17030517

Cited by 20 publications

(11 citation statements)

References 19 publications

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“…Polymer optical fibers (POFs) comprising Fiber Bragg gratings (FBGs) are emerging as new fiber sensors that have potential to be used for the detection of temperature [1], strain [2], humidity [3] or other physical quantities [4,5]. In comparison to silica optical fibers, POFs display several advantages such as higher failure strain [6], flexibility in bending [7], and lower Young’s modulus [8], which provides enhanced sensitivity to strain and force, for example.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Strain, Temperature and Humidity Sensitivity of a Multimode Graded-Index Perfluorinated Polymer Optical Fiber with Bragg Grating

Zheng

Bremer

Roth

2018

Sensors

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In this work we investigate the strain, temperature and humidity sensitivity of a Fiber Bragg Grating (FBG) inscribed in a near infrared low-loss multimode perfluorinated polymer optical fiber based on cyclic transparent optical polymer (CYTOP). For this purpose, FBGs were inscribed into the multimode CYTOP fiber with a core diameter of 50 µm by using a krypton fluoride (KrF) excimer laser and the phase mask method. The evolution of the reflection spectrum of the FBG detected with a multimode interrogation technique revealed a single reflection peak with a full width at half maximum (FHWM) bandwidth of about 9 nm. Furthermore, the spectral envelope of the single FBG reflection peak can be optimized depending on the KrF excimer laser irradiation time. A linear shift of the Bragg wavelength due to applied strain, temperature and humidity was measured. Furthermore, depending on irradiation time of the KrF excimer laser, both the failure strain and strain sensitivity of the multimode fiber with FBG can be controlled. The inherent low light attenuation in the near infrared wavelength range (telecommunication window) of the multimode CYTOP fiber and the single FBG reflection peak when applying the multimode interrogation set-up will allow for new applications in the area of telecommunication and optical sensing.

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Section: Introductionmentioning

confidence: 99%

Investigating the Strain, Temperature and Humidity Sensitivity of a Multimode Graded-Index Perfluorinated Polymer Optical Fiber with Bragg Grating

Zheng

Bremer

Roth

2018

Sensors

Self Cite

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“…In the future, we would like to take advantage of the higher information density that can be carried through optical systems to create integrated sensorimotor networks. These networks could combine not only deformation sensing but also temperature (43), humidity (44), and chemical monitoring. We may also better incorporate the cores through directly 3D-printing the light guides (45).…”

Section: Discussionmentioning

confidence: 99%

Optical lace for synthetic afferent neural networks

Mishra

Bai

et al. 2019

Sci. Robot.

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Whereas vision dominates sensing in robots, animals with limited vision deftly navigate their environment using other forms of perception, such as touch. Efforts have been made to apply artificial skins with tactile sensing to robots for similarly sophisticated mobile and manipulative skills. The ability to functionally mimic the afferent sensory neural network, required for distributed sensing and communication networks throughout the body, is still missing. This limitation is partially due to the lack of cointegration of the mechanosensors in the body of the robot. Here, lacings of stretchable optical fibers distributed throughout 3D-printed elastomer frameworks created a cointegrated body, sensing, and communication network. This soft, functional structure could localize deformation with submillimeter positional accuracy (error of 0.71 millimeter) and sub-Newton force resolution (~0.3 newton).

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“…Sensor kelembapan menggunakan serat optik sebagai pandu gelombang mempunyai beberapa kelebihan seperti daya tahan, desain miniatur, kemungkinan dapat bekerja di lingkungan yang mudah terbakar pada suhu dan rentang tekanan yang tinggi, dan kekekalan elektromagnetik [7,8].…”

Section: Iunclassified

Desain Sensor Kelembapan Relatif Udara Menggunakan Fiber Optik

Marya

2021

Jurnal Jartel

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Kelembapan udara menjadi faktor penting dalam kehidupan manusia yaitu untuk menjaga kesetabilan kesehatan tubuhyang jugai akan berpengaruh kepada kenyamanan kerja. Diperlukan sensor untuk mengetahui kelembapan dalam ruangan. Alat bisa dikatakan sensor jika memiliki linearitas dan sensitivitas, dalam hal ini fiber optik cocok untuk sensor dikarenakan kemampuan alaminya yang tahan terhadap gangguan elektromagnetik, tahan terhadap suhu tinggi, memiliki sensitivitas dan fleksibelitas yang tinggi, dan dapat digunakan untuk pengukuran dan penginderaan jauh. Penelitian ini menggunakan 2 buah kabel patch core singlemode SC-SC yang dihubungkan dengan fiber coupler yang telah diberi lubang bagian tengahnya dengan diameter 1mm dan diberi jarak antar ferullenya sebasar 0.3mm, 0.6mm, 0.8mm, 1mm. Optical light source digunakan untuk memberikan masukan dengan nilai -7dBm dan nilai keluaran akan dibaca oleh Optical power meter yang nantinya akan diolah menjadi loss daya kemudian dibandingkan dengan nilai kelembapan relatif dari Hygrometer dan akan diperoleh persamaan linearnya. Hasil pengukuran didapatkan semakin jauh jarak antar ferulle maka range yang didapat juga akan semakin panjang. Range terpanjang didapat pada pengukuran jarak 1mm dengan selisih loss daya sebesar 0.2dB dan range terpendek didapat pada pengukuran 0.3mm dengan selisih loss daya sebesar 0.08dB.

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PDMAA Hydrogel Coated U-Bend Humidity Sensor Suited for Mass-Production

Cited by 20 publications

References 19 publications

Investigating the Strain, Temperature and Humidity Sensitivity of a Multimode Graded-Index Perfluorinated Polymer Optical Fiber with Bragg Grating

Investigating the Strain, Temperature and Humidity Sensitivity of a Multimode Graded-Index Perfluorinated Polymer Optical Fiber with Bragg Grating

Optical lace for synthetic afferent neural networks

Desain Sensor Kelembapan Relatif Udara Menggunakan Fiber Optik

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