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Nowadays, the development of simple, fast, and low-cost selective sensors to detect substances of interest is of great importance in several application fields. Among this kind of sensors, those based on surface plasmon resonance (SPR) represent a promising category, since they are highly sensitive, versatile, and label-free. In this work, an SPR probe, based on a poly(methyl methacrylate) (PMMA) slab waveguide covered by a gold nanofilm, combined with a specific molecularly imprinted polymer (MIP) receptor for bovine serum albumin (BSA) protein, has been realized and experimentally characterized. The obtained experimental results have shown a limit of detection (LOD) equal to about 8.5 × 10−9 M. This value is smaller than the one achieved by another SPR probe, based on a D-shaped plastic optical fiber (POF), functionalized with the same MIP receptor; more specifically, the obtained LOD was reduced by about three orders of magnitude with respect to the POF configuration. Moreover, concerning the D-shaped POF configuration, no manufacturing process is present in the proposed sensor configuration. In addition, fibers are used only to connect the simple sensor chip with a light source and a detector, promoting a bio-chemical sensing approach based on disposable, low-cost, and removable chips.
Francesco Arcadio; Luigi Zeni; Chiara Perri; Girolamo D’Agostino; Giudo Chiaretti; Giovanni Porto; Aldo Minardo; Nunzio Cennamo. Bovine Serum Albumin Protein Detection by a Removable SPR Chip Combined with a Specific MIP Receptor. Chemosensors 2021, 9, 218 .
AMA StyleFrancesco Arcadio, Luigi Zeni, Chiara Perri, Girolamo D’Agostino, Giudo Chiaretti, Giovanni Porto, Aldo Minardo, Nunzio Cennamo. Bovine Serum Albumin Protein Detection by a Removable SPR Chip Combined with a Specific MIP Receptor. Chemosensors. 2021; 9 (8):218.
Chicago/Turabian StyleFrancesco Arcadio; Luigi Zeni; Chiara Perri; Girolamo D’Agostino; Giudo Chiaretti; Giovanni Porto; Aldo Minardo; Nunzio Cennamo. 2021. "Bovine Serum Albumin Protein Detection by a Removable SPR Chip Combined with a Specific MIP Receptor." Chemosensors 9, no. 8: 218.
In this work, a novel approach to realize a plasmonic sensor is presented. The proposed optical sensor device is designed, manufactured, and experimentally tested. Two photo-curable resins are used to 3D print a surface plasmon resonance (SPR) sensor. Both numerical and experimental analyses are presented in the paper. The numerical and experimental results confirm that the 3D printed SPR sensor presents performances, in term of figure of merit (FOM), very similar to other SPR sensors made using plastic optical fibers (POFs). For the 3D printed sensor, the measured FOM is 13.6 versus 13.4 for the SPR-POF configuration. The cost analysis shows that the 3D printed SPR sensor can be manufactured at low cost (∼15 €) that is competitive with traditional sensors. The approach presented here allows to realize an innovative SPR sensor showing low-cost, 3D-printing manufacturing free design and the feasibility to be integrated with other optical devices on the same plastic planar support, thus opening undisclosed future for the optical sensor systems.
Nunzio Cennamo; Lorena Saitta; Claudio Tosto; Francesco Arcadio; Luigi Zeni; Maria Fragalá; Gianluca Cicala. Microstructured Surface Plasmon Resonance Sensor Based on Inkjet 3D Printing Using Photocurable Resins with Tailored Refractive Index. Polymers 2021, 13, 2518 .
AMA StyleNunzio Cennamo, Lorena Saitta, Claudio Tosto, Francesco Arcadio, Luigi Zeni, Maria Fragalá, Gianluca Cicala. Microstructured Surface Plasmon Resonance Sensor Based on Inkjet 3D Printing Using Photocurable Resins with Tailored Refractive Index. Polymers. 2021; 13 (15):2518.
Chicago/Turabian StyleNunzio Cennamo; Lorena Saitta; Claudio Tosto; Francesco Arcadio; Luigi Zeni; Maria Fragalá; Gianluca Cicala. 2021. "Microstructured Surface Plasmon Resonance Sensor Based on Inkjet 3D Printing Using Photocurable Resins with Tailored Refractive Index." Polymers 13, no. 15: 2518.
In a specific biosensing application, a nanoplasmonic sensor chip has been tested by an experimental setup based on an aluminum holder and two plastic optical fibers used to illuminate and collect the transmitted light. The studied plasmonic probe is based on gold nanograting, realized on the top of a Poly(methyl methacrylate) (PMMA) chip. The PMMA substrate could be considered as a transparent substrate and, in such a way, it has been already used in previous work. Alternatively, here it is regarded as a slab waveguide. In particular, we have deposited upon the slab surface, covered with a nanograting, a synthetic receptor specific for bovine serum albumin (BSA), to test the proposed biosensing approach. Exploiting this different experimental configuration, we have determined how the orientation of the nanostripes forming the grating pattern, with respect to the direction of the input light (longitudinal or orthogonal), influences the biosensing performances. For example, the best limit of detection (LOD) in the BSA detection that has been obtained is equal to 23 pM. Specifically, the longitudinal configuration is characterized by two observable plasmonic phenomena, each sensitive to a different BSA concentration range, ranging from pM to µM. This aspect plays a key role in several biochemical sensing applications, where a wide working range is required.
Francesco Arcadio; Luigi Zeni; Aldo Minardo; Caterina Eramo; Stefania Di Ronza; Chiara Perri; Girolamo D’Agostino; Guido Chiaretti; Giovanni Porto; Nunzio Cennamo. A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals. Nanomaterials 2021, 11, 1961 .
AMA StyleFrancesco Arcadio, Luigi Zeni, Aldo Minardo, Caterina Eramo, Stefania Di Ronza, Chiara Perri, Girolamo D’Agostino, Guido Chiaretti, Giovanni Porto, Nunzio Cennamo. A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals. Nanomaterials. 2021; 11 (8):1961.
Chicago/Turabian StyleFrancesco Arcadio; Luigi Zeni; Aldo Minardo; Caterina Eramo; Stefania Di Ronza; Chiara Perri; Girolamo D’Agostino; Guido Chiaretti; Giovanni Porto; Nunzio Cennamo. 2021. "A Nanoplasmonic-Based Biosensing Approach for Wide-Range and Highly Sensitive Detection of Chemicals." Nanomaterials 11, no. 8: 1961.
A specific aptameric sequence has been immobilized on short polyethyleneglycol (PEG) interface on gold nano-film deposited on a D-shaped plastic optical fiber (POFs) probe, and the protein binding has been monitored exploiting the very sensitive surface plasmon resonance (SPR) phenomenon. The receptor-binding domain (RBD) of the SARS-CoV-2 spike glycoprotein has been specifically used to develop an aptasensor. Surface analysis techniques coupled to fluorescence microscopy and plasmonic analysis have been utilized to characterize the biointerface. Spanning a wide protein range (25 ÷ 1000 nM), the SARS-Cov-2 spike protein was detected with a Limit of Detection (LoD) of about 37 nM. Different interferents (BSA, AH1N1 hemagglutinin protein and MERS spike protein) have been tested confirming the specificity of our aptasensor. Finally, a preliminary test in diluted human serum encouraged its application in a point-of-care device, since POF-based aptasensor represent a potentially low-cost compact biosensor, characterized by a rapid response, a small size and could be an ideal laboratory portable diagnostic tool.
Nunzio Cennamo; Laura Pasquardini; Francesco Arcadio; Lorenzo Lunelli; Lia Vanzetti; Vincenzo Carafa; Lucia Altucci; Luigi Zeni. SARS-CoV-2 spike protein detection through a plasmonic D-shaped plastic optical fiber aptasensor. Talanta 2021, 233, 122532 -122532.
AMA StyleNunzio Cennamo, Laura Pasquardini, Francesco Arcadio, Lorenzo Lunelli, Lia Vanzetti, Vincenzo Carafa, Lucia Altucci, Luigi Zeni. SARS-CoV-2 spike protein detection through a plasmonic D-shaped plastic optical fiber aptasensor. Talanta. 2021; 233 ():122532-122532.
Chicago/Turabian StyleNunzio Cennamo; Laura Pasquardini; Francesco Arcadio; Lorenzo Lunelli; Lia Vanzetti; Vincenzo Carafa; Lucia Altucci; Luigi Zeni. 2021. "SARS-CoV-2 spike protein detection through a plasmonic D-shaped plastic optical fiber aptasensor." Talanta 233, no. : 122532-122532.
Nowadays there is an increasing request to realize green, eco-friendly and biodegradable electronic devices for biosensor implementation. In this context, we have conceived and realized a green sensor based on Localized Surface Plasmon Resonance (LSPR) phenomenon in a thin slab waveguide of Bacterial Cellulose (BC). These LSPR sensors can be obtained simply by gold sputtering on the slab BC waveguides. The performances have been studied investigating the presence of ionic liquids (ILs) inside and in absence of ILs with various thickness of the BC substrate. Depending of the thickness of the BC layer, the ILs effect on the LSPR can be constructive or destructive. In this work, we present a study of the sensor performances, in terms of bulk sensitivity and resolution by changing the aforementioned parameters. Analyses in terms of BC geometry are pursued in order to improve the interaction between the light and the LSPR phenomenon. The experimental setup used for this kind of extrinsic optical fiber LSPR sensor is based on two optical fibers used to connect a white light source and a spectrometer with the green LSPR sensor chip. Results evince the suitability of the proposed approach in order to realize sensors and biosensors with several intriguing properties and features. In fact, these LSPR platforms could be used to realize disposable biosensors, when a specific bioreceptor is covalently bonded to the gold.
Nunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Liu Xiaoyan; Giovanna Di Pasquale; Antonino Pollicino. Green LSPR Sensors Based on Thin Bacterial Cellulose Waveguides for Disposable Biosensor Implementation. IEEE Transactions on Instrumentation and Measurement 2021, 70, 1 -8.
AMA StyleNunzio Cennamo, Carlo Trigona, Salvatore Graziani, Luigi Zeni, Francesco Arcadio, Liu Xiaoyan, Giovanna Di Pasquale, Antonino Pollicino. Green LSPR Sensors Based on Thin Bacterial Cellulose Waveguides for Disposable Biosensor Implementation. IEEE Transactions on Instrumentation and Measurement. 2021; 70 (99):1-8.
Chicago/Turabian StyleNunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Liu Xiaoyan; Giovanna Di Pasquale; Antonino Pollicino. 2021. "Green LSPR Sensors Based on Thin Bacterial Cellulose Waveguides for Disposable Biosensor Implementation." IEEE Transactions on Instrumentation and Measurement 70, no. 99: 1-8.
The rapid spread of the Coronavirus Disease 2019 (COVID-19) pandemic, caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pathogen has generated a huge international public health emergency. Currently the reference diagnostic technique for virus determination is Reverse Transcription Polymerase Chain Reaction (RT-PCR) real time analysis that requires specialized equipment, reagents and facilities and typically 3–4 h to perform. Thus, the realization of simple, low-cost, small-size, rapid and point-of-care diagnostics tests has become a global priority. In response to the current need for quick, highly sensitive and on-site detection of the SARS-CoV-2 virus in several aqueous solutions, a specific molecularly imprinted polymer (MIP) receptor has been designed, realized, and combined with an optical sensor. More specifically, the proof of concept of a SARS-CoV-2 sensor has been demonstrated by exploiting a plasmonic plastic optical fiber sensor coupled with a novel kind of synthetic MIP nano-layer, especially designed for the specific recognition of Subunit 1 of the SARS-CoV-2 Spike protein. First, we have tested the effectiveness of the developed MIP receptor to bind the Subunit 1 of the SARS-CoV-2 spike protein, then the results of preliminary tests on SARS-CoV-2 virions, performed on samples of nasopharyngeal (NP) swabs in universal transport medium (UTM) and physiological solution (0.9% NaCl), were compared with those obtained with RT-PCR. According to these preliminary results, the sensitivity of the proposed optical-chemical sensor proved to be higher than the RT-PCR one. Furthermore, a relatively fast response time (about 10 min) to the virus was obtained without the use of additional reagents.
Nunzio Cennamo; Girolamo D’Agostino; Chiara Perri; Francesco Arcadio; Guido Chiaretti; Eva Parisio; Giulio Camarlinghi; Chiara Vettori; Francesco Di Marzo; Rosario Cennamo; Giovanni Porto; Luigi Zeni. Proof of Concept for a Quick and Highly Sensitive On-Site Detection of SARS-CoV-2 by Plasmonic Optical Fibers and Molecularly Imprinted Polymers. Sensors 2021, 21, 1681 .
AMA StyleNunzio Cennamo, Girolamo D’Agostino, Chiara Perri, Francesco Arcadio, Guido Chiaretti, Eva Parisio, Giulio Camarlinghi, Chiara Vettori, Francesco Di Marzo, Rosario Cennamo, Giovanni Porto, Luigi Zeni. Proof of Concept for a Quick and Highly Sensitive On-Site Detection of SARS-CoV-2 by Plasmonic Optical Fibers and Molecularly Imprinted Polymers. Sensors. 2021; 21 (5):1681.
Chicago/Turabian StyleNunzio Cennamo; Girolamo D’Agostino; Chiara Perri; Francesco Arcadio; Guido Chiaretti; Eva Parisio; Giulio Camarlinghi; Chiara Vettori; Francesco Di Marzo; Rosario Cennamo; Giovanni Porto; Luigi Zeni. 2021. "Proof of Concept for a Quick and Highly Sensitive On-Site Detection of SARS-CoV-2 by Plasmonic Optical Fibers and Molecularly Imprinted Polymers." Sensors 21, no. 5: 1681.
We present a novel methodology for magnetic field sensing by exploiting Surface Plasmon Resonance (SPR) sensors based on D-shaped Plastic Optical Fiber (POF) and Magnetic Fluids (MFs). The proposed methodology adopts a multimode POF patch covered with ferrofluid placed between the light source and the SPR-POF platform. The working principle exploits the changing of the SPR spectra due to variations of the SPR resonance conditions generated by the changing in the input light in the SPR-POF sensor due to the attractive force exerted by the target magnetic field on the POF covered with ferrofluid. A model showing a good fitting between the simulated and measured values of the magnetic field is also presented. A proof of concept for this novel sensing approach has been obtained exploiting a prototype of sensor that has been characterized in the range of values between 0.15 mT and 1.2 mT. Particularly, we have estimated in the linear range of the sensor response a sensitivity equal to about 6800 pm/mT and a resolution equal to about 0.029 mT. Moreover, the comparison between the expected and the experimental behaviour has shown a very good match with a mean squared error of about 5%.
Nunzio Cennamo; Francesco Arcadio; Vincenzo Marletta; Salvatore Baglio; Luigi Zeni; Bruno Ando. A Magnetic Field Sensor Based on SPR-POF Platforms and Ferrofluids. IEEE Transactions on Instrumentation and Measurement 2020, 70, 1 -10.
AMA StyleNunzio Cennamo, Francesco Arcadio, Vincenzo Marletta, Salvatore Baglio, Luigi Zeni, Bruno Ando. A Magnetic Field Sensor Based on SPR-POF Platforms and Ferrofluids. IEEE Transactions on Instrumentation and Measurement. 2020; 70 (99):1-10.
Chicago/Turabian StyleNunzio Cennamo; Francesco Arcadio; Vincenzo Marletta; Salvatore Baglio; Luigi Zeni; Bruno Ando. 2020. "A Magnetic Field Sensor Based on SPR-POF Platforms and Ferrofluids." IEEE Transactions on Instrumentation and Measurement 70, no. 99: 1-10.
In this work, we have compared several configurations of surface plasmon resonance (SPR) sensors based on D-shaped tapered plastic optical fibers (TPOFs). Particularly, the TPOFs used to obtain the SPR sensors are made by a lab-built system based on two motorized linear positioning stages and a heating plate. Preliminarily, a comparative analysis has been carried out between two different configurations, one with and one without a thin buffer layer deposited between the core of TPOFs and the gold film. After this preliminary step, we have used the simpler configuration, obtained without the buffer layer, to realize different SPR D-shaped TPOF sensors. This study could be of interest in SPR D-shaped multimode plastic optical fiber (POF) sensors because, without the tapers, the performances decrease when the POF’s diameter decreases, whereas the performances improve in SPR D-shaped tapered POF sensors, where the diameter decreases in the D-shaped sensing area. The performances of the SPR sensors based on different taper ratios have been analyzed and compared. The SPR-TPOF sensors have been tested using water–glycerin mixtures with refractive indices ranging from 1.332 to 1.381 RIU. According to the theory, the experimental results have demonstrated that, as the taper ratio increases, the sensitivity of the SPR sensor increases as well, while on the contrary the signal-to-noise ratio (SNR) decreases.
Nunzio Cennamo; Francesco Arcadio; Aldo Minardo; Domenico Montemurro; Luigi Zeni. Experimental Characterization of Plasmonic Sensors Based on Lab-Built Tapered Plastic Optical Fibers. Applied Sciences 2020, 10, 4389 .
AMA StyleNunzio Cennamo, Francesco Arcadio, Aldo Minardo, Domenico Montemurro, Luigi Zeni. Experimental Characterization of Plasmonic Sensors Based on Lab-Built Tapered Plastic Optical Fibers. Applied Sciences. 2020; 10 (12):4389.
Chicago/Turabian StyleNunzio Cennamo; Francesco Arcadio; Aldo Minardo; Domenico Montemurro; Luigi Zeni. 2020. "Experimental Characterization of Plasmonic Sensors Based on Lab-Built Tapered Plastic Optical Fibers." Applied Sciences 10, no. 12: 4389.
The selective detection of pollutants in water in a laboratory scenario has been presented by authors exploiting low-cost optical biosensors based on plastic optical fibers (POFs) and biological or bio-mimetic receptors. For instance, the detection in water of naphthalene, perfluoroalkyl and polyfluoroalkyl substances (PFAs) have been investigated with interesting detection limits when compared to those obtained by using different expensive traditional approaches (e.g. liquid chromatography-mass spectrometry with high performances). In this work, we have developed and tested a novel approach used in a smart measuring system to use POF sensors in situ for the remote measures of pollutants in water for smart cities applications. More specifically, we have used different water-glycerin solutions to test the novel sensor system based on a Raspberry PI connected to the Internet and to a spectrometer, a light source, a POF sensor, and two computers connected to Internet used as client and server.
Nunzio Cennamo; Francesco Arcadio; Fiore Capasso; Chiara Perri; Girolamo D’Agostino; Gianni Porto; Adriano Biasiolo; Luigi Zeni. Towards Smart Selective Sensors exploiting a novel approach to connect Optical Fiber Biosensors in Internet. IEEE Transactions on Instrumentation and Measurement 2020, 69, 1 -1.
AMA StyleNunzio Cennamo, Francesco Arcadio, Fiore Capasso, Chiara Perri, Girolamo D’Agostino, Gianni Porto, Adriano Biasiolo, Luigi Zeni. Towards Smart Selective Sensors exploiting a novel approach to connect Optical Fiber Biosensors in Internet. IEEE Transactions on Instrumentation and Measurement. 2020; 69 (10):1-1.
Chicago/Turabian StyleNunzio Cennamo; Francesco Arcadio; Fiore Capasso; Chiara Perri; Girolamo D’Agostino; Gianni Porto; Adriano Biasiolo; Luigi Zeni. 2020. "Towards Smart Selective Sensors exploiting a novel approach to connect Optical Fiber Biosensors in Internet." IEEE Transactions on Instrumentation and Measurement 69, no. 10: 1-1.
We have used the same bio-mimetic receptor, a specific molecularly imprinted polymer (MIP), on two different plasmonic plastic optical fiber (POF) sensors, to measure how the optical response influences the chemical response. To obtain two surface plasmon resonance (SPR) platforms, we have used two different overlayers between the core of the POF and the gold film. These overlayers, with a refractive index higher than that of the POF’s core (PMMA), have been used to improve the performances of the plasmonic sensor. As overlayers, we have deposited a photoresist (Microposit S1813), in two different ageing conditions, namely before and after its expiry date. In this work, we have demonstrated how the alteration in the photoresist changes the sensor’s performances and eventually the chemical response of the MIPs. More specifically, we have compared the MIPs responses of these two SPR-POF platforms in two different refractive index ranges. For this purpose, an MIP receptor already tested in the detection of Perfluorinated compounds (PFAs) in water, has been exploited.
Nunzio Cennamo; Girolamo DrAgostino; Francesco Arcadio; Chiara Perri; Gianni Porto; Adriano Biasiolo; Luigi Zeni. Measurement of MIPs Responses Deposited on Two SPR-POF Sensors Realized by Different Photoresist Buffer Layers. IEEE Transactions on Instrumentation and Measurement 2020, 69, 1464 -1473.
AMA StyleNunzio Cennamo, Girolamo DrAgostino, Francesco Arcadio, Chiara Perri, Gianni Porto, Adriano Biasiolo, Luigi Zeni. Measurement of MIPs Responses Deposited on Two SPR-POF Sensors Realized by Different Photoresist Buffer Layers. IEEE Transactions on Instrumentation and Measurement. 2020; 69 (4):1464-1473.
Chicago/Turabian StyleNunzio Cennamo; Girolamo DrAgostino; Francesco Arcadio; Chiara Perri; Gianni Porto; Adriano Biasiolo; Luigi Zeni. 2020. "Measurement of MIPs Responses Deposited on Two SPR-POF Sensors Realized by Different Photoresist Buffer Layers." IEEE Transactions on Instrumentation and Measurement 69, no. 4: 1464-1473.
In several application fields, plasmonic sensor platforms combined with bio-receptors are intensively used to obtain biosensors. Most of these commercial devices are based on a disposable chip. Usually a gold chip, functionalized with a specific bio-receptor, inside a costly sensor system, is used. In this work, we propose a low-cost and small-size sensor system, used for monitoring a disposable plasmonic chip, based on an innovative optical waveguide made of bacterial cellulose (BC). In particular, we have sputtered gold on the green slab waveguide that is able to excite localized surface plasmon resonance (LSPR). Experimental results are presented on the capabilities of using the BC-based composite as an eco-friendly plasmonic sensor platform, which could be exploited for realizing disposable biosensors. The sensor has been used with optical fibers and simple equipment. More specifically, the fibers connect the green disposable LSPR sensor with a light source and with a spectrometer. The novel plasmonic sensing approach has been tested using two different optical waveguide configurations of BC, with and without ions inside BC.
Nunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Giovanna Di Pasquale; Antonino Pollicino. An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold. Sensors 2019, 19, 4894 .
AMA StyleNunzio Cennamo, Carlo Trigona, Salvatore Graziani, Luigi Zeni, Francesco Arcadio, Giovanna Di Pasquale, Antonino Pollicino. An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold. Sensors. 2019; 19 (22):4894.
Chicago/Turabian StyleNunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Giovanna Di Pasquale; Antonino Pollicino. 2019. "An Eco-Friendly Disposable Plasmonic Sensor Based on Bacterial Cellulose and Gold." Sensors 19, no. 22: 4894.
We have investigated, in a numerical and experimental way, a refractive index (RI) sensor based on surface plasmon resonance (SPR) in a silver-coated light-diffusing fiber (LDF). The experimental tests were conducted using water-glycerine mixtures with refractive indices ranging from 1.332 to 1.388. In the considered refractive index range, the experimental results show a sensitivity of the SPR wavelength to the outer medium’s RI ranging from 2600 to 4700 nm/RIU, which is larger than the sensitivity recently reported for a gold-coated LDF sensor (1200 to 4000nm/RIU). The silver-coated sensor is also shown to ensure a higher signal-to-noise ratio (SNR) compared to the gold-coated sensor.
Nunzio Cennamo; Luigi Zeni; Francesco Arcadio; Ester Catalano; Aldo Minardo. A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films. Fibers 2019, 7, 34 .
AMA StyleNunzio Cennamo, Luigi Zeni, Francesco Arcadio, Ester Catalano, Aldo Minardo. A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films. Fibers. 2019; 7 (4):34.
Chicago/Turabian StyleNunzio Cennamo; Luigi Zeni; Francesco Arcadio; Ester Catalano; Aldo Minardo. 2019. "A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films." Fibers 7, no. 4: 34.
This work presents how the altering in the photoresist (Microposit S1813) changes the performances of D-shaped plastic optical fiber (POF) plasmonic sensors. In particular, this photoresist has been used to obtain a buffer layer, deposited on the exposed core in the D-shaped POF region before sputtering the gold film, to improve the performances of the sensor. We have studied how the optical property of the photoresist layer changes when the photoresist is used after the expiry date. In particular, we have compared the performances of two surface plasmon resonance (SPR) sensors realized exploiting two Microposit S1813 photoresists, one before and the other after the expiry date. When the refractive index of the medium of interest (aqueous medium) is minor than 1.36, the sensitivity improves with the use of S1813 after the expiry date, vice versa when the refractive index is major than 1.36.
Nunzio Cennamo; Francesco Arcadio; Luigi Zeni. Effect of the photoresist aging in D-shaped POF SPR Sensors for biochemical applications. 2019 IEEE Sensors Applications Symposium (SAS) 2019, 1 -4.
AMA StyleNunzio Cennamo, Francesco Arcadio, Luigi Zeni. Effect of the photoresist aging in D-shaped POF SPR Sensors for biochemical applications. 2019 IEEE Sensors Applications Symposium (SAS). 2019; ():1-4.
Chicago/Turabian StyleNunzio Cennamo; Francesco Arcadio; Luigi Zeni. 2019. "Effect of the photoresist aging in D-shaped POF SPR Sensors for biochemical applications." 2019 IEEE Sensors Applications Symposium (SAS) , no. : 1-4.
We present a comparative study of three optical sensing platforms based on surface plasmon resonance (SPR) in plastic optical fibers (POFs). The proposed sensors consist of a D–shaped POF sensing area, where the exposed core is covered by a photoresist layer, used as intermediate layer between the fiber’s core and the metal (gold) film. The photoresist deposited on the exposed core in the D–shaped POF region, is pivotal in order to improve the performances of the sensor in terms of sensitivity. In particular, we have compared the performances of three different buffer layers based on the following photoresist: Microposit SU-8 3005, Microposit S1813 before and after the expiry date.
Nunzio Cennamo; Paola Zuppella; Francesco Arcadio; Luigi Zeni. Exploiting Several Buffer Layers in SPR D-Shaped POF Sensors Based on Gold Film for Different Applications. Proceedings 2019, 15, 47 .
AMA StyleNunzio Cennamo, Paola Zuppella, Francesco Arcadio, Luigi Zeni. Exploiting Several Buffer Layers in SPR D-Shaped POF Sensors Based on Gold Film for Different Applications. Proceedings. 2019; 15 (1):47.
Chicago/Turabian StyleNunzio Cennamo; Paola Zuppella; Francesco Arcadio; Luigi Zeni. 2019. "Exploiting Several Buffer Layers in SPR D-Shaped POF Sensors Based on Gold Film for Different Applications." Proceedings 15, no. 1: 47.
We use as optical waveguide a green composite, based on bacterial cellulose (BC). More specifically, we have sputtered a thin gold film on this innovative slab waveguide for obtaining a Localized Surface Plasmon Resonance (LSPR) sensor. Experimental results confirm the possibility of using the BC based composite as an environmental friendly optical sensor platform with plasmonic capabilities, which could be exploited for realizing disposable biosensors. The new optical sensor has been used by combining it with optical fibers. The fibers connect the green disposable optical sensor with a light source and with a spectrometer. The device has been tested by measuring the refractive index of different water-glycerin solutions.
Nunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Giovanna Di Pasquale; Antonino Pollicino; Zeni; Pasquale. A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose. Proceedings 2019, 15, 36 .
AMA StyleNunzio Cennamo, Carlo Trigona, Salvatore Graziani, Luigi Zeni, Francesco Arcadio, Giovanna Di Pasquale, Antonino Pollicino, Zeni, Pasquale. A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose. Proceedings. 2019; 15 (1):36.
Chicago/Turabian StyleNunzio Cennamo; Carlo Trigona; Salvatore Graziani; Luigi Zeni; Francesco Arcadio; Giovanna Di Pasquale; Antonino Pollicino; Zeni; Pasquale. 2019. "A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose." Proceedings 15, no. 1: 36.
In this paper, we show that light-diffusing fibers (LDF) can be efficiently used as host material for surface plasmon resonance (SPR)-based refractive index sensing. This novel platform does not require a chemical procedure to remove the cladding or enhance the evanescent field, which is expected to give better reproducibility of the sensing interface. The SPR sensor has been realized by first removing the cladding with a simple mechanical stripper, and then covering the unclad fiber surface with a thin gold film. The tests have been carried out using water–glycerin mixtures with refractive indices ranging from 1.332 to 1.394. The experimental results reveal a high sensitivity of the SPR wavelength to the outer medium’s refractive index, with values ranging from ~1500 to ~4000 nm/RIU in the analyzed range. The results suggest that the proposed optical fiber sensor platform could be used in biochemical applications.
Nunzio Cennamo; Luigi Zeni; Ester Catalano; Francesco Arcadio; Aldo Minardo. Refractive Index Sensing through Surface Plasmon Resonance in Light-Diffusing Fibers. Applied Sciences 2018, 8, 1172 .
AMA StyleNunzio Cennamo, Luigi Zeni, Ester Catalano, Francesco Arcadio, Aldo Minardo. Refractive Index Sensing through Surface Plasmon Resonance in Light-Diffusing Fibers. Applied Sciences. 2018; 8 (7):1172.
Chicago/Turabian StyleNunzio Cennamo; Luigi Zeni; Ester Catalano; Francesco Arcadio; Aldo Minardo. 2018. "Refractive Index Sensing through Surface Plasmon Resonance in Light-Diffusing Fibers." Applied Sciences 8, no. 7: 1172.
A novel Molecularly Imprinted Polymer (MIP) able to bind perfluorinated compounds, combined with a surface plasmon resonance (SPR) optical fiber platform, is presented. The new MIP receptor has been deposited on a D-shaped plastic optical fiber (POF) covered with a photoresist buffer layer and a thin gold film. The experimental results have shown that the developed SPR-POF-MIP sensor makes it possible to selectively detect the above compounds. In this work, we present the results obtained with perfluorooctanoate (PFOA) compound, and they hold true when obtained with a perfluorinated alkylated substances (PFAs) mixture sample. The sensor’s response is the same for PFOA, perfluorooctanesulfonate (PFOS) or PFA contaminants in the C4–C11 range. We have also tested a sensor based on a non-imprinted polymer (NIP) on the same SPR in a D-shaped POF platform. The limit of detection (LOD) of the developed chemical sensor was 0.13 ppb. It is similar to the one obtained by the configuration based on a specific antibody for PFOA/PFOS exploiting the same SPR-POF platform, already reported in literature. The advantage of an MIP receptor is that it presents a better stability out of the native environment, very good reproducibility, low cost and, furthermore, it can be directly deposited on the gold layer, without modifying the metal surface by functionalizing procedures.
Nunzio Cennamo; Girolamo D’Agostino; Gianni Porto; Adriano Biasiolo; Chiara Perri; Francesco Arcadio; Luigi Zeni. A Molecularly Imprinted Polymer on a Plasmonic Plastic Optical Fiber to Detect Perfluorinated Compounds in Water. Sensors 2018, 18, 1836 .
AMA StyleNunzio Cennamo, Girolamo D’Agostino, Gianni Porto, Adriano Biasiolo, Chiara Perri, Francesco Arcadio, Luigi Zeni. A Molecularly Imprinted Polymer on a Plasmonic Plastic Optical Fiber to Detect Perfluorinated Compounds in Water. Sensors. 2018; 18 (6):1836.
Chicago/Turabian StyleNunzio Cennamo; Girolamo D’Agostino; Gianni Porto; Adriano Biasiolo; Chiara Perri; Francesco Arcadio; Luigi Zeni. 2018. "A Molecularly Imprinted Polymer on a Plasmonic Plastic Optical Fiber to Detect Perfluorinated Compounds in Water." Sensors 18, no. 6: 1836.
A new approach for the selective detection of the Perfluorinated compounds in water is presented. The low-cost sensor system is based on a Molecular Imprinted Polymer deposited on a D-shaped Plastic Optical Fiber platform.
N. Cennamo; G. D’Agostino; Filipa Sequeira; F. Arcadio; G. Porto; A. Biasiolo; C. Perri; Rogerio Nogueira; L. Bilro; L. Zeni. An optical fiber intensity-based sensor configuration for the detection of PFOA in water. 26th International Conference on Optical Fiber Sensors 2018, ThE37 .
AMA StyleN. Cennamo, G. D’Agostino, Filipa Sequeira, F. Arcadio, G. Porto, A. Biasiolo, C. Perri, Rogerio Nogueira, L. Bilro, L. Zeni. An optical fiber intensity-based sensor configuration for the detection of PFOA in water. 26th International Conference on Optical Fiber Sensors. 2018; ():ThE37.
Chicago/Turabian StyleN. Cennamo; G. D’Agostino; Filipa Sequeira; F. Arcadio; G. Porto; A. Biasiolo; C. Perri; Rogerio Nogueira; L. Bilro; L. Zeni. 2018. "An optical fiber intensity-based sensor configuration for the detection of PFOA in water." 26th International Conference on Optical Fiber Sensors , no. : ThE37.