Article
Polymer Science
Chung-Chih Lin, Chao-Long Yang
Summary: In this work, a novel method is proposed to manufacture complicated hollow products without limitations on resin type and with a lower energy consumption process. This method utilizes a water-soluble core and a shell to achieve the desired internal contour of the product, resulting in improved product quality.
Article
Engineering, Electrical & Electronic
Jichao Zang, Charu Goel, Muhammad Rosdi Abu Hassan, Wonkeun Chang, Seongwoo Yoo
Summary: The unique characteristics of hollow core fibers make them attractive for designing inline fiber optic devices. We report a novel approach that uses a resonant band of single-ring antiresonant fiber to realize a high-performance hollow-core fiber polarizer. The device offers low transmission loss and a high polarization extinction ratio. These results encourage further development of other hollow-core fiber components.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yucheng Min, Adam Filipkowski, Grzegorz Stepniewski, Dominik Dobrakowski, Jian Zhou, Bowen Lou, Mariusz Klimczak, Luming Zhao, Ryszard Buczynski
Summary: Fusion splicing of solid-core microstructured silica fibers enables practical applications of anti-resonant hollow core fibers, which have thin wall membranes critical for their unique optical properties. The splice loss is around 1-2 dB within the transmission window of 1450-2000 nm, with polarization maintaining and mechanical robustness successfully verified in the fabricated splices.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Xiaonan Zhao, Xuqiang Wu, Cheng Zuo, Shengquan Mu, Jinhui Shi, Dong Guang, Benli Yu, Zhenggang Lian, Bo Zhang, Weiping Chen
Summary: A novel sensitivity-enhanced optical fiber temperature sensor utilizing core offset and hollow core Bragg fiber has been proposed and experimentally investigated. The sensor, consisting of a hollow core Bragg fiber sandwiched between two single-mode fibers, enhances temperature sensitivity by exciting inter-modal interference through lateral offset splicing fibers. The unique four-cladding structure of hollow core Bragg fiber induces periodic interference envelopes in the transmission spectrum, allowing monitoring of changes in the external environment. Experimental results demonstrate high temperature and strain sensitivities, making the sensor suitable for applications in complex environments such as aerospace.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Shuichiro Rikimi, Yong Chen, Thomas W. Kelly, Ian A. Davidson, Gregory T. Jasion, Matthew Partridge, Kerrianne Harrington, Thomas D. Bradley, Austin A. Taranta, Francesco Poletti, Marco N. Petrovich, David J. Richardson, Natalie V. Wheeler
Summary: This study investigates the gas pressure and composition within a hollow core optical fiber immediately after fabrication. The results indicate that the initial gas pressure in the hollow core is significantly lower than atmospheric pressure and the internal surfaces become saturated with atmospheric water vapor. These findings are essential for studying the long-term optical and mechanical performance of hollow core fibers and accurately characterizing these specialty fibers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yong You, Huiyi Guo, Mao Feng, Baiwei Mao, Huimin Shi, Jiangbing Du, Zhi Wang, Yan-Ge Liu
Summary: The characteristics of higher-order modes in a 7-cell HC-PBF were investigated, revealing the non-degenerate phenomenon of HE21. An optimized 7-cell HC-PBF supporting 6 modes was developed through theoretical analysis. Additionally, bending losses of all HOMs in the fiber were measured, with marked bending loss not observed even at a small bending radius of 0.5 cm, distinguishing it from a solid core four-mode fiber.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Haihong Bao, Wei Jin, Yingzhen Hong, Hoi Lut Ho, Shoufei Gao, Yingying Wang
Summary: Photothermal interferometry with hollow core fibers enables highly sensitive spectroscopic gas sensors. By exploiting the optical-phase-modulation amplifying effect of an HCF resonating cavity, significant improvement in the limit of detection is achieved, enabling ultra-sensitive gas detection.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Foued Amrani, Jonas H. Osorio, Frederic Delahaye, Fabio Giovanardi, Luca Vincetti, Benoit Debord, Frederic Gerome, Fetah Benabid
Summary: The design of hollow-core photonic crystal fibres with hybrid-lattice cladding significantly reduces confinement loss and preserves single-mode operation, showing potential for next-generation optical fibres.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Optics
Shou-Fei Gao, Ying-Ying Wang, Federico Belli, Christian Brahms, Pu Wang, John C. Travers
Summary: A route to supercontinuum generation in gas-filled hollow-core anti-resonant fibers is demonstrated through the creation of a broad vibrational Raman frequency comb, followed by continuous broadening and merging of the comb lines through either rotational Raman scattering or the optical Kerr effect. The experimental results show a supercontinuum spanning from 440 to 1200 nm, with an additional deep ultraviolet continuum from 250 to 360 nm, and numerical results suggest even broader supercontinuum spectra extending from the ultraviolet to mid-infrared can be achieved.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Juliano G. Hayashi, Seyed M. A. Mousavi, Andrea Ventura, Francesco Poletti
Summary: The novel design of hollow-core fiber proposed in this study combines antiresonant/inhibited-coupling and photonic bandgap guidance mechanisms to significantly reduce optical loss. Through numerical modeling, it has been shown that this hybrid design offers low-loss, high beam-quality, effectively single-mode operation, and low bending losses, potentially addressing many issues faced by existing mid-infrared fiber types.
Article
Engineering, Electrical & Electronic
Huiyi Guo, Baiwei Mao, Yong You, Luhe Zhang, Siyu Chen, Zhi Wang, Yange Liu
Summary: Hollow core fibers have advantages in long-distance mode retention and high-speed transmission, but controlling the number of allowed modes remains a challenge. This paper introduces a new optical state observation method in k-space to propose a mode selection principle and demonstrate a fiber structure supporting only a single mode.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Md Selim Habib, Abubakar Adamu, Christos Markos, Rodrigo Amezcua-Correa
Summary: The proposed hollow-core anti-resonant fiber design based on hybrid silica/silicon cladding achieves single-polarization, single-mode, and high birefringence. The optimized design shows low propagation loss and high birefringence for y-polarization, making it suitable for applications in the field of optical fiber communications.
Article
Materials Science, Multidisciplinary
Xian Zhang, Jinghui Ding, Xiao-Song Zhu, Yi-Wei Shi
Summary: The potential of long-rang Tamm plasmon polariton (LRTPP) for sensing applications is investigated. A hollow-core fiber (HF) sensor based on LRTPP is proposed, and a theoretical analysis is conducted to understand the influence of structural parameters on the sensor performance. The HF LRTPP sensor achieves high sensitivity and figure of merit (FOM) in gas sensing.
RESULTS IN PHYSICS
(2023)
Review
Optics
Mario Chemnitz, Saher Junaid, Markus A. Schmidt
Summary: Softphotonics is a new discipline that utilizes soft matter as waveguide materials with versatile functionalities. The flexible properties of soft matter show great potential for exploiting nonlinear in-fiber phenomena to develop a new generation of optical light sources and signal processors. This review highlights the current state of development of nonlinear photonics in liquid-filled fibers, revisits the material properties of prominent solvents, and summarizes recent advances in liquid-core fiber optics including unique phenomena and dispersion control.
LASER & PHOTONICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Cong Zhang, Eric Numkam Fokoua, Songnian Fu, Meng Din, Francesco Poletti, David J. Richardson, Radan Slavik
Summary: We have studied and demonstrated the fusion splicing between single mode fiber (SMF) and nested anti-resonant node-less fiber (NANF) using angle-cleaved technique. With accurate angle-cleaving and improved offset splicing technique, we achieved a connection loss of 1.25 dB and back-reflection below -40 dB. Our research highlights the improved performance of the communication system through reduced round-trip induced multipath interference.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Mechanics
V. L. Okulov, B. R. Sharifullin, N. Okulova, J. Kafka, R. Taboryski, J. N. Sorensen, I. Naumov
Summary: Experiments were conducted using a water-filled elongated cup of a kitchen scale with a rotating disk with micro- and nano-roughness. The results showed that certain nanostructures led to significant growth of vortices while other roughnesses did not impact the flow structure. These findings are important for evaluating the efficiency of surfaces with nanoscale roughnesses and have potential applications in enhancing mixing in chemical and bio-reactors.
Article
Chemistry, Multidisciplinary
Nikolaj K. Mandsberg, Anna Shneidman, Kaare H. Jensen, Rafael Taboryski, Line H. Nielsen, Joanna Aizenberg, Anja Boisen
Summary: A method of producing droplet arrays with gradients in droplet height by dip-coating uniformly patterned biphilic substrates in acceleration-mode has been developed, allowing for the adjustment of droplet characteristics and demonstrating promising applications in experiments.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Physics, Applied
James L. Webb, Luca Troise, Nikolaj W. Hansen, Louise F. Frellsen, Christian Osterkamp, Fedor Jelezko, Steffen Jankuhn, Jan Meijer, Kirstine Berg-Sorensen, Jean-Francois Perrier, Alexander Huck, Ulrik Lund Andersen
Summary: This study demonstrates a method utilizing point defects in solid-state materials to achieve high-resolution measurement of signals in microscopic circuits, enabling simultaneous spatial and temporal recovery.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Maria Niora, Mathilde Hauge Lerche, Martin Dufva, Kirstine Berg-Sorensen
Summary: Fluorescent nanodiamonds (FNDs) with negative nitrogen-vacancy (NV-) defect centers are ideal probes for biosensing applications and can potentially serve as biomarkers for cell differentiation. The uptake of FNDs by THP-1 monocytes and monocyte-derived M0-macrophages is studied, revealing differing FND-cell interactions and time-dependent uptake. FND uptake allows for distinction between cell subtypes based on phagocytic capacity, and FNDs demonstrate effective cell labeling and have potential for sensing biological processes involving cell differentiation.
Article
Engineering, Biomedical
Murat Serhatlioglu, Emil Alstrup Jensen, Maria Niora, Anne Todsen Hansen, Christian Friberg Nielsen, Michelle Maria Theresia Jansman, Leticia Hosta-Rigau, Morten Hanefeld Dziegiel, Kirstine Berg-Sorensen, Ian David Hickson, Anders Kristensen
Summary: A compact microfluidic flow cytometer with viscoelastic flow focusing and fiber optical interface is demonstrated. The device allows for easy operation and interchangeable capillaries to achieve single-train particle focusing for a wide range of particle sizes. The system is integrated with optical imaging and other optofluidic modalities and achieves a high throughput of 3500 events s(-1).
ADVANCED NANOBIOMED RESEARCH
(2023)
Article
Plant Sciences
Marc Fradera-Soler, Jozef Mravec, Alexander Schulz, Rafael Taboryski, Bodil Jorgensen, Olwen M. Grace
Summary: Hydathode-mediated foliar water uptake (FWU) has been observed in the leaf-succulent genus Crassula, a diverse group of plants in southern Africa. This FWU ability is not restricted to arid environments and is independent of leaf surface wettability. It is an adaptation that allows Crassula species to harvest moisture from the atmosphere.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Engineering, Manufacturing
Federico Cantoni, Daniel Maher, Eugenia Bosler, Stefan Kuhne, Laurent Barbe, Dirk Oberschmidt, Christophe Marquette, Rafael Taboryski, Maria Tenje, Ada- Ioana Bunea
Summary: Since its introduction in the 1980s, 3D printing has developed as a versatile and reliable tool with applications in different fields. Among these, two-photon polymerization is considered one of the most promising technologies due to its ability to achieve high precision printing down to submicron scale and free-form structure design. Recent advancements in faster laser scanning strategies and new photoresists have further enhanced this technology, leading to a wider range of applications. This study aims to provide an overview of the technology capability by comparing three commercial systems in a round-robin test.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Electrical & Electronic
M. Serra Gonzalez, M. Keil, R. Deshpande, S. Kadkhodazadeh, N. Okulova, R. J. Taboryski
Summary: In this work, a complete process flow combining resolution enhancement techniques (RETs) and roll-to-roll extrusion coating (R2R-EC) is proposed to produce large-scale nanopillar arrays. The optimized lithographic parameters and process enable the successful replication of hexagonal and rectangular arrays, which show improved solar absorption efficiency and heat radiation blocking after metallization.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2023)
Article
Materials Science, Multidisciplinary
Emil Alstrup Jensen, Murat Serhatlioglu, Cihan Uyanik, Anne Todsen Hansen, Sadasivan Puthusserypady, Morten Hanefeld Dziegiel, Anders Kristensen
Summary: Label-free blood typing using Raman spectroscopy and artificial intelligence was demonstrated in this study. Training an AI model on a dataset of Raman spectra of blood samples allowed classification of ABO blood group, erythrocyte antigens, platelet antigens, antibody titers, and ABH-secretor status. The results show promising potential for future applications in transfusion medicine and blood banking.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Quantum Science & Technology
Luca Troise, Nikolaj Winther Hansen, Christoffer Olsson, James Luke Webb, Leo Tomasevic, Jocelyn Achard, Ovidiu Brinza, Robert Staacke, Michael Kieschnick, Jan Meijer, Axel Thielscher, Hartwig Roman Siebner, Kirstine Berg-Sorensen, Jean-Francois Perrier, Alexander Huck, Ulrik Lund Andersen
Summary: This research utilizes a new quantum sensor to record the biomagnetic field of living tissues, aiming to explain the biological action potential response. This method avoids potential damage to target systems caused by traditional invasive methods and provides a new approach to passive sensing and imaging at the microscopic level.
AVS QUANTUM SCIENCE
(2022)
Proceedings Paper
Engineering, Multidisciplinary
Murat Serhatlioglu, Emil Alstrup Jensen, Maria Niora, Anne Todsen Hansen, Christian Friberg Nielsen, Michelle Maria Theresia Jansman, Leticia Hosta-Rigau, Morten Hanefeld Dziegiel, Kirstine Berg-Sorensen, Ian D. Hickson, Anders Kristensen
Summary: Flow cytometry (FC) is a pivotal tool for studying the physical and chemical properties of particles. This study presents a miniaturized optical capillary FC device using the viscoelastic focusing technique. The device can collect and analyze light signals in real-time and can be used for both flow cytometry analysis and microscopy imaging. The device has been successfully used for particle measurements and can be combined with other tools for extended applications.
OPTICAL TRAPPING AND OPTICAL MICROMANIPULATION XIX
(2022)
Proceedings Paper
Engineering, Multidisciplinary
Emil Alstrup Jensen, Murat Serhatlioglu, Airidas Zukauskas, Cihan Uyanik, Anne Todsen Hansen, Sadasivan Puthusserypady, Morten Hanefeld Dziegiel, Anders Kristensen
Summary: This study presents a multivariate analysis of human-blood samples for ABO blood typing using Raman spectroscopy and support vector machine (SVM) classification. It addresses the issues of expensive and time-consuming traditional ABO blood typing methods, demonstrating the great potential of the developed system for future blood typing applications.
OPTICAL TRAPPING AND OPTICAL MICROMANIPULATION XIX
(2022)
Article
Materials Science, Multidisciplinary
Andreas F. L. Poulsen, Joshua D. Clement, James L. Webb, Rasmus H. Jensen, Luca Troise, Kirstine Berg-Sorensen, Alexander Huck, Ulrik Lund Andersen
Summary: In this study, we demonstrate the efficient and coherent control of a large defect ensemble for sensing using Floquet theory and optimal control optimization methods. By optimizing the microwave control pulses, we achieve an improvement in the strength of ensemble response, and identify the bandwidth limitations of large-ensemble reinitialization and propose alternative routes for further improvement.
