Article
Materials Science, Multidisciplinary
Liang Zhang, Ran Zhang, Lili Cui, Tao Li, Dayong Gu, Jian'an He, Sixiang Zhang
Summary: This study successfully prepared GO-film-covered SPR sensor chips by modifying the surfaces of gold chips with linear functionalized polyethylene glycol. The optimal concentration of GO solution was determined, and the modified sensor chips showed enhanced detection ability for the dengue virus.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Polymer Science
Nur Alia Sheh Omar, Yap Wing Fen, Irmawati Ramli, Amir Reza Sadrolhosseini, Jaafar Abdullah, Nor Azah Yusof, Yasmin Mustapha Kamil, Mohd Adzir Mahdi
Summary: This study demonstrates the enhancement of sensitivity and selectivity of an SPR sensor for detecting DENV-2 E-proteins through the use of PAMAM dendrimer-based nanocomposite thin film. The sensor showed significant improvements in sensitivity and binding affinity towards lower range DENV-2 E-protein concentrations, with good selectivity and an average recovery rate of 80-120%. The combination of PAMAM dendrimer-based nanocomposite thin film with SPR sensor proves to be a promising diagnostic tool for sensitive and selective detection of DENV-2 E-proteins.
Article
Chemistry, Physical
Bhishma Karki, Nasih Hma Salah, Gaurav Srivastava, Arjuna Muduli, Ram Bharos Yadav
Summary: Surface plasmon resonance (SPR) sensor devices have various applications in monitoring and detecting diseases. They provide exceptional sensitivity and cost-effectiveness. A silver-barium titanate (BaTiO3)-cerium oxide (CeO2) multi-layered nanostructure integrated SPR sensor was designed for early diagnosis of dengue virus. The optimized structure consists of one layer of Ag, one layer of BaTiO3, and 28 layers of CeO2. The numerical study monitored the resonance angle and showed promising results for detecting dengue viruses.
Article
Materials Science, Multidisciplinary
Zhengfen Wan, Shujun Wang, Ben Haylock, Zhiqing Wu, Tuan-Khoa Nguyen, Hoang-Phuong Phan, Robert Sang, Nam-Trung Nguyen, David Thiel, Sergio Koulakov, Adrian Trinchi, Yongsheng Gao, Mirko Lobino, Qin Li
Summary: This study fabricates graphene sheets decorated with Au nanoparticles using milliwatt femtosecond laser reduction, revealing enhanced reduction of graphene oxide sheets and nucleation and growth of Au nanoparticles during the in situ laser treatment. Three stages of reactions are considered, involving spontaneous redox reactions, laser-induced decomposition, and localized surface plasmon resonance enhanced photoreduction. The Au nanoparticles form densely and evenly distributed square-lattice-like microcrack networks, enabling the development of flexible graphene/Au strain sensors with high gauge factors and linear behavior up to 25.4% strain, demonstrating the potential for highly functional, low-cost, flexible, and wearable graphene-based electronics.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Analytical
Onur Celik, Yeseren Saylan, Ilgim Gokturk, Fatma Yilmaz, Adil Denizli
Summary: Detection of antibiotic residues is crucial for protecting human health. This study successfully detected benzylpenicillin antibiotic using a surface plasmon resonance sensor and a molecularly imprinted polymer, with high selectivity and a low detection limit.
Review
Chemistry, Multidisciplinary
Filimon Hadish Abrha, Tadele Hunde Wondimu, Mebrahtu Hagos Kahsay, Fetene Fufa Bakare, Dinsefa Mensur Andoshe, Jung Yong Kim
Summary: The outbreak of the novel coronavirus has caused millions of confirmed and death cases worldwide. Therefore, it is crucial to develop a rapid and cost-effective detection method for the virus. Graphene, with its unique physical, optical, and electrochemical properties, can be utilized in biosensors to achieve high sensitivity and selectivity. This review article focuses on graphene-based electrochemical, field-effect transistor, and surface plasmon biosensors for detecting the novel coronavirus, providing insights into the surface modification, immobilization, sensitivity, and limit of detection of these sensors.
Article
Materials Science, Multidisciplinary
Awadhesh Kumar, Anil Kumar, Sarvesh K. Dubey, Prateek Kumar Yadav, S. K. Srivastava
Summary: In this paper, an enhanced sensing performance-based surface plasmon resonance biosensor is proposed using silver, silicon nitride, and graphene oxide. The sensor shows better performance parameters for different types of cancer cells and has potential applications in cancer detection.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Hassan Nasiri, Hamed Baghban, Reza Teimuri-Mofrad, Ahad Mokhtarzadeh
Summary: This study aims to develop a surface plasmon resonance (SPR) sensor using a Chitosan/Polyaniline/Graphene oxide-Ferrocene (CS/PANI/GOFc) composite thin film for glucose detection. The optimal composite formulation was determined based on experimental refractive index data and the effective medium theory (EMT). The prepared CS 25%/PANI 25%/GOFc 50% composite was evaluated in the design of the glucose sensor by modifying the SPR gold chip. The results show that the SPR sensor exhibits a linear response in the glucose concentration range of 0.5-100 μM with a sensitivity of 0.0202 μM-1. The binding affinity analysis using Langmuir and Sips models indicates that the composite film has a higher affinity constant compared to the bare gold chip.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Analytical
Shimeng Chen, Yun Liu, Qingxu Yu, Wei Peng
Summary: A novel SPR biosensing approach with low LOD, high sensitivity, and extensive applicability was introduced in this study. By optimizing the SPR sensor structure and employing a self-referencing sensing strategy, the low LOD of 0.2 fM was achieved.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Piyong Zhang, Hongyan Liu, Xuemei Li
Summary: The study demonstrates the fabrication of CuCo/reduced graphene oxide junctions for photocatalytic water splitting without a sacrificial agent, improving energy conversion efficiency. The CuCo bimetal converts sunlight energy into surface plasmon resonance oscillations and transfers the energy to electron-hole pairs via Landau damping. The synergistic interaction in the bimetallic material results in an enhancement of photocatalytic activity compared to pure copper.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Devi Taufiq Nurrohman, Nan-Fu Chiu
Summary: The surface plasmon resonance (SPR) biosensor is a powerful analytical tool for investigating biomolecular interactions, and graphene has been widely studied as a material to increase the sensor's sensitivity through various excitation methods. Current development of graphene-based SPR biosensor includes discussion on graphene properties, its application in biosensors, simulation, and experimental results of different excitation methods. Additionally, a review on graphene-based Surface-Enhanced Raman Scattering (SERS) biosensor expands the discussion on SPR biosensors, providing an overview of future material development in biosensors.
Article
Optics
Nur Hidayah Azeman, Mohd Hafiz Abu Bakar, Nur Afifah Ahmad Nazri, Nadhratun Naiim Mobarak, Muhammad Asif Ahmad Khushaini, Tengku Hasnan Tengku Abdul Aziz, Ahmad Rifqi Md Zain, Ahmad Ashrif A. Bakar
Summary: This work reports the application of silver nanotriangles (AgNT) incorporated with chitosan/graphene oxide (Chit/GO) and carboxymethyl chitosan/graphene oxide (CMChit/GO) for the enhancement of ammonium localized surface plasmon resonance (SPR) sensor. The ammonium is detected through the hydrogen bonding between the hydroxyl functional group on the sensing material surface with ammonium. The results show that the addition of AgNT, Chit/GO, and CMChit/GO can improve the sensitivity of the sensor and effectively detect ammonium.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Aline dos Santos Almeida, Dario A. Bahamon, Nuno M. R. Peres, Christiano J. S. de Matos
Summary: The use of graphene in surface plasmon resonance sensors has advantages such as protecting the film and increasing sensitivity. However, the role of single and few layers of graphene in sensitivity enhancement was critically examined, and it was found that only the isotropic layer model provides significant sensitivity increases.
Article
Chemistry, Physical
M. Amin, O. Siddiqui, H. Abutarboush, M. Farhat, R. Ramzan
Summary: A novel method utilizing the chirality of highly sensitive graphene plasmonic metasurfaces is proposed to characterize the complex refractive indexes of viruses by detecting the polarization state of the reflected electric fields in the THz spectrum. The method exploits chiral surface currents to couple linearly polarized incident fields to circularly polarized reflected fields, resulting in unique polarization states in the far-field with ellipticity values that change rapidly with the analyte's refractive index. The method demonstrates potential for virus characterization with simpler instrumentation compared to traditional spectroscopic methods.
Article
Chemistry, Analytical
Zhe-Wei Yang, Thi-Thu-Hien Pham, Chin-Chi Hsu, Chi-Hsiang Lien, Quoc-Hung Phan
Summary: This article proposes a graphene-based surface plasmon resonance prism coupler sensor for rapid detection of immunoglobulin G antibodies. The feasibility of the sensor is demonstrated through experiments, showing high resolution and response time.
Article
Instruments & Instrumentation
E. K. Ng, N. Mohd Yusoff, H. K. Lee, J. Y. C. Liew, M. H. Abu Bakar, N. H. Zainol Abidin, M. T. Alresheedi, M. A. Mahdi
Summary: This paper focuses on the design and fabrication method of black phosphorus/polydimethylsiloxane composite microfiber-based saturable absorber (SA) for ultrashort pulse generation. The integration of the SA in an erbium-doped fiber laser exhibited a pulse duration of 724 fs. This work provides a guideline for the design of microfiber-based SA using spin-coating technique to maximize its laser performances.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mohammed M. Alkhabet, Saad H. Girei, Husam K. Salih, Rasha Thabit, Mohammed Abdullah Issa, Suriati Paiman, Norhana Arsad, Mohammed Thamer Alresheedi, Mohd A. Mahdi, Mohd H. Yaacob
Summary: This study describes the development of a palladium-coated optical fiber for room temperature hydrogen gas detection. The sensor exhibits high sensitivity, good selectivity, and operates reliably at room temperature. The results demonstrate that this simple and cost-effective method enables reliable and efficient detection of hydrogen gas.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Optics
Nurul Hida Zainuddin, Hui Yee Chee, Suraya Abdul Rashid, Muhammad Zamharir Ahmad, Muhammad Hafiz Abu Bakar, Mohd Adzir Mahdi, Mohd Hanif Yaacob
Summary: This paper reports on the development of a DNA biosensor using carbon quantum dots (CQDs) for enhanced detection of Leptospira DNA. The biosensor demonstrated high sensitivity and specificity, and has the potential for the development of more sensitive and reliable diagnostic testing for leptospirosis in the future.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
N. Z. A. Naharuddin, M. H. Abu Bakar, N. Tamchek, M. T. Alresheedi, A. F. Abas, C. S. Goh, N. H. Zainuddin, M. A. Mahdi
Summary: This study compares the optical performance of a passively mode-locked erbium-doped fiber laser incorporating gold nanoparticles (Au-NPs) of different sizes as saturable absorbers (SAs). The Au-NPs were mixed with polydimethylsiloxane and spin coated on a microfiber waveguide. The fabricated Au-NP-based SA was used in a ring cavity erbium-doped fiber laser, and its lasing performance was evaluated by comparing SA characteristics and pulse qualities for different Au-NP sizes. The best pulse performance was achieved with 20 and 40 nm Au-NP size.
Article
Engineering, Electrical & Electronic
Norita Mohd Yusoff, Eng Khoon Ng, Natrah Shafiqah Rosli, Che Azurahanim Che Abdullah, Nelydia Md Yusoff, Mohd Adzir Mahdi
Summary: A tapered microfiber decorated with titanium dioxide-silicon dioxide nanocomposite saturable absorber (TiO2-SiO2-SA) was fabricated using alkali fusion method and spin-coating technique. The TiO2-SiO2-SA showed a modulation depth of 17.1%, a saturation fluence of 31.7 μJ/cm(2), and a non-saturable loss of 35.4%. At a repetition rate of 10.39 MHz and a wavelength of 1.56 μm, the TiO2-SiO2-SA generated a pulse duration of 797 fs and an average output power of 16.57 mW. This work demonstrates an improved pulse duration using titanium-based saturable absorbers and suggests a new route for utilizing nanomaterials derived from waste products in ultrafast photonic applications.
IEEE PHOTONICS JOURNAL
(2023)
Article
Optics
Norita Mohd Yusoff, Han Kee Lee, Eng Khoon Ng, Natrah Shafiqah Rosli, Che Azurahanim Che Abdullah, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi
Summary: A nanocomposite of titania-coated silica saturable absorber (TiO2-SiO2-SA) with nonlinear saturable absorption and optical limiting effect was fabricated. It demonstrated stable noise-like pulse (NLP) generation in a ring cavity erbium-doped fiber laser at low threshold power and maintained operation at high pump power. The NLP with TiO2-SiO2-SA showed stability and potential as a next-generation nanocomposite material for ultrafast photonics.
JOURNAL OF LUMINESCENCE
(2023)
Article
Polymer Science
Mohammed Thamer Alresheedi, Mohamed Elsafi, Yosef T. T. Aladadi, Ahmad Fauzi Abas, Abdullrahman Bin Ganam, M. I. Sayyed, Mohd Adzir Mahdi
Summary: This study aimed to prepare silicone rubber composites with heavy metal oxide nanoparticles for gamma ray shielding applications. The incorporation of heavy metal oxide nanoparticles improved the thermal stability, mechanical properties, and radiation shielding performance of the silicone rubber composites. The addition of heavy metal oxide nanoparticles decreased the transmission factor (TF) of gamma rays through the composites, indicating enhanced radiation shielding effectiveness. Furthermore, the linear attenuation coefficient (LAC) and half-value layer (HVL) of the composites were evaluated, with HMO inclusion leading to increased photon interactions and reduced HVL values, particularly at low energy levels.
Article
Chemistry, Multidisciplinary
Ahmad Fauzi Abas, Kuen Yao Lau, Yahya Mohammed Al-Moliki, Yosef Taher Aladadi, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi
Summary: This study presents a passive mode-locked erbium-doped fiber laser using a graphene nanoplatelet-saturable absorber (GNP-SA) to generate femtosecond pulses. The output coupling ratio and intracavity power have been found to affect the optical amplification properties and lasing wavelength of the fiber laser. The results contribute to the understanding of the behavior of oscillating light under varying intracavity power.
APPLIED SCIENCES-BASEL
(2023)
Review
Chemistry, Analytical
Yasmin Mustapha Kamil, Muhammad Hafiz Abu Bakar, Nurul Hida Zainuddin, Mohd Hanif Yaacob, Mohd Adzir Mahdi
Summary: Biosensors play a crucial role in diagnostic and medicinal applications for monitoring, managing illness, and public health. Microfiber-based biosensors have the ability to sensitively measure the presence and behavior of biological molecules. The flexibility of microfiber in supporting different sensing layer designs and integration with nanomaterials enhances specificity.
Article
Materials Science, Multidisciplinary
Nurul Hida Zainuddin, Hui Yee Chee, Suraya Abdul Rashid, Muhammad Zamharir Ahmad, Zuraidah Zan, Muhammad Hafiz Abu Bakar, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi, Mohd Hanif Yaacob
Summary: This study developed an optical biosensor using a tapered optical fiber integrated with post-deposition annealed carbon quantum dots (CQDs) to improve Leptospira DNA detection. The CQDs surface properties on the tapered optical fiber were tuned using a simple annealing process. Leptospira probe DNA was bonded to the annealed CQDs surface and detected through hybridization with different concentrations of complementary target DNA. The integration of CQDs improved the biosensor's sensitivity and specificity, making it a promising tool for reliable leptospirosis diagnosis.
Article
Materials Science, Multidisciplinary
Norita Mohd Yusoff, Mahmoud Hazzaa Mohamed Ahmed, Eng Khoon Ng, Mohammed Thamer Alresheedi, Mohd Zul Hilmi Mayzan, Mohd Adzir Mahdi
Summary: This work presents a tapered fiber decorated with bulk alpha-alumina that induces noise-like pulse (NLP) in an eye-safe wavelength region. The NLP is formed through light-matter interaction within an ultrathin tapered fiber in a ring configuration of a thulium-doped fiber laser.
RESULTS IN PHYSICS
(2023)
Article
Optics
Airull Azizi Awang Lah, Abdul Hadi Sulaiman, Fairuz Abdullah, Sumiaty Ambran, Eng Khoon Ng, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi, Nelidya Md Yusoff
Summary: In this study, three lasing wavelengths are generated using Rayleigh backscattering to stabilize peak power variations. The proposed laser consists of a combination of a semiconductor optical amplifier (SOA) and erbium-doped fiber amplifier (EDFA) as the amplifying media. Three fiber Bragg gratings are used as selective wavelength selectors. A flattened output spectrum with 0.9 dB peak power variation is achieved at 110 mA SOA current and 18 dBm EDFA output power. The maximum peak power fluctuation for the individual laser is 0.24 dB within a 120-minute observation period. Without the Rayleigh backscattering effect, peak power flatness is significantly degraded, indicating the potential use of weakly distributed photons as peak power stabilizers in fiber laser systems.
Article
Chemistry, Physical
Mohammed Thamer Alresheedi, Mohamed Elsafi, Yosef T. Aladadi, Ahmad Fauzi Abas, Abdullrahman Bin Ganam, M. I. Sayyed, Mohd Adzir Mahdi
Summary: This study developed a mortar composite with improved gamma ray shielding properties by adding WO3 and Bi2O3 nanoparticles, as well as replacing part of the sand with granite residue. The addition of nanoparticles and granite residue improved the homogeneity of the mixture and reduced the percentage of voids. Thermal analysis showed that the material exhibited improved thermal properties with the increase in nanoparticles, without weight loss at higher temperatures. The incorporation of Bi2O3 nanoparticles greatly affected the linear attenuation coefficient at low energies and had a noticeable effect at higher energies, resulting in excellent gamma ray shielding properties.
Article
Chemistry, Multidisciplinary
Maisarah Mansor, Nadiah Husseini Zainol Abidin, Norita Mohd Yusoff, Kuen Yao Lau, Josephine Liew Ying Chyi, Vijay Janyani, Amit Kumar Garg, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi
Summary: This research demonstrates the use of tungsten trioxide/polydimethylsiloxane nanocomposite saturable absorber (WO3/PDMS-SA) in achieving mode-locked conventional soliton (CS) and noise-like pulse (NLP) laser generation with net anomalous dispersion. The switching from CS regime to NLP regime was achieved by varying the pump power. The pulse laser exhibited good stability and signal-to-noise ratio in both CS and NLP regimes, making it potentially beneficial for compact dual-purpose laser systems.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Optics
Hazwani Suhaila Hashim, Yap Wing Fen, Nur Alia Sheh Omar, Wan Mohd Ebtisyam Mustaqim Mohd Daniyal, Nurul Illya Muhamad Fauzi, Jaafar Abdullah, Mohd Adzir Mahdi
Summary: By adding graphene quantum dots to the gold thin film, the sensing capabilities of the surface plasmon resonance sensor for phenol have been significantly improved. The gold-graphene quantum dots thin film has a lower limit of detection and higher sensitivity, and exhibits excellent selectivity towards phenol.
OPTICS AND LASER TECHNOLOGY
(2024)
