1
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Pisano F, Collard L, Zheng D, Kashif MF, Kazemzadeh M, Balena A, Piscopo L, Andriani MS, De Vittorio M, Pisanello F. Potential of plasmonics and nanoscale light-matter interactions for the next generation of optical neural interfaces. NEUROPHOTONICS 2024; 11:S11513. [PMID: 39119220 PMCID: PMC11309004 DOI: 10.1117/1.nph.11.s1.s11513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 07/02/2024] [Accepted: 07/15/2024] [Indexed: 08/10/2024]
Abstract
Within the realm of optical neural interfaces, the exploration of plasmonic resonances to interact with neural cells has captured increasing attention among the neuroscience community. The interplay of light with conduction electrons in nanometer-sized metallic nanostructures can induce plasmonic resonances, showcasing a versatile capability to both sense and trigger cellular events. We describe the perspective of generating propagating or localized surface plasmon polaritons on the tip of an optical neural implant, widening the possibility for neuroscience labs to explore the potential of plasmonic neural interfaces.
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Affiliation(s)
- Filippo Pisano
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- University of Padua, Department of Physics and Astronomy “G. Galilei” Padua, Italy
| | - Liam Collard
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- RAISE Ecosystem, Genova, Italy
| | - Di Zheng
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
| | - Muhammad Fayyaz Kashif
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
| | - Mohammadrahim Kazemzadeh
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
| | - Antonio Balena
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
| | - Linda Piscopo
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- Università del Salento, Dipartimento di Ingegneria Dell’Innovazione, Lecce, Italy
| | - Maria Samuela Andriani
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- Università del Salento, Dipartimento di Ingegneria Dell’Innovazione, Lecce, Italy
| | - Massimo De Vittorio
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- RAISE Ecosystem, Genova, Italy
- Università del Salento, Dipartimento di Ingegneria Dell’Innovazione, Lecce, Italy
| | - Ferruccio Pisanello
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, Arnesano (Lecce), Italy
- RAISE Ecosystem, Genova, Italy
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2
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Roschelle M, Rabbani R, Gweon S, Kumar R, Vercruysse A, Cho NW, Spitzer MH, Niknejad AM, Stojanović VM, Anwar M. A Wireless, Multicolor Fluorescence Image Sensor Implant for Real-Time Monitoring in Cancer Therapy. ARXIV 2024:arXiv:2406.18881v1. [PMID: 38979489 PMCID: PMC11230517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Real-time monitoring of dynamic biological processes in the body is critical to understanding disease progression and treatment response. This data, for instance, can help address the lower than 50% response rates to cancer immunotherapy. However, current clinical imaging modalities lack the molecular contrast, resolution, and chronic usability for rapid and accurate response assessments. Here, we present a fully wireless image sensor featuring a 2.5×5 mm2 CMOS integrated circuit for multicolor fluorescence imaging deep in tissue. The sensor operates wirelessly via ultrasound (US) at 5 cm depth in oil, harvesting energy with 221 mW/cm2 incident US power density (31% of FDA limits) and backscattering data at 13 kbps with a bit error rate <10-6. In-situ fluorescence excitation is provided by micro-laser diodes controlled with a programmable on-chip driver. An optical frontend combining a multi-bandpass interference filter and a fiber optic plate provides >6 OD excitation blocking and enables three-color imaging for detecting multiple cell types. A 36×40-pixel array captures images with <125 μm resolution. We demonstrate wireless, dual-color fluorescence imaging of both effector and suppressor immune cells in ex vivo mouse tumor samples with and without immunotherapy. These results show promise for providing rapid insight into therapeutic response and resistance, guiding personalized medicine.
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Affiliation(s)
- Micah Roschelle
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Rozhan Rabbani
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Surin Gweon
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Rohan Kumar
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Alec Vercruysse
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Nam Woo Cho
- Department of Radiation Oncology and the Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA 94158 USA
| | - Matthew H. Spitzer
- Department of Otolaryngology-Head and Neck Surgery and the Department of Microbiology and Immunology, University of California, San Francisco, CA 94158 USA
| | - Ali M. Niknejad
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Vladimir M. Stojanović
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley CA 94720 USA
| | - Mekhail Anwar
- Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720 USA
- Department of Radiation Oncology, University of California, San Francisco, CA 94158 USA
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3
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Chen FD, Sharma A, Roszko DA, Xue T, Mu X, Luo X, Chua H, Lo PGQ, Sacher WD, Poon JKS. Development of wafer-scale multifunctional nanophotonic neural probes for brain activity mapping. LAB ON A CHIP 2024; 24:2397-2417. [PMID: 38623840 DOI: 10.1039/d3lc00931a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Optical techniques, such as optogenetic stimulation and functional fluorescence imaging, have been revolutionary for neuroscience by enabling neural circuit analysis with cell-type specificity. To probe deep brain regions, implantable light sources are crucial. Silicon photonics, commonly used for data communications, shows great promise in creating implantable devices with complex optical systems in a compact form factor compatible with high volume manufacturing practices. This article reviews recent developments of wafer-scale multifunctional nanophotonic neural probes. The probes can be realized on 200 or 300 mm wafers in commercial foundries and integrate light emitters for photostimulation, microelectrodes for electrophysiological recording, and microfluidic channels for chemical delivery and sampling. By integrating active optical devices to the probes, denser emitter arrays, enhanced on-chip biosensing, and increased ease of use may be realized. Silicon photonics technology makes possible highly versatile implantable neural probes that can transform neuroscience experiments.
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Affiliation(s)
- Fu Der Chen
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - Ankita Sharma
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - David A Roszko
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - Tianyuan Xue
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - Xin Mu
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
| | - Xianshu Luo
- Advanced Micro Foundry Pte Ltd, 11 Science Park Road, Singapore Science Park II, 117685, Singapore
| | - Hongyao Chua
- Advanced Micro Foundry Pte Ltd, 11 Science Park Road, Singapore Science Park II, 117685, Singapore
| | - Patrick Guo-Qiang Lo
- Advanced Micro Foundry Pte Ltd, 11 Science Park Road, Singapore Science Park II, 117685, Singapore
| | - Wesley D Sacher
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
| | - Joyce K S Poon
- Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany.
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada
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4
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Yu H, Hu Z, He J, Ran Y, Zhao Y, Yu Z, Tai K. Flexible temperature-pressure dual sensor based on 3D spiral thermoelectric Bi 2Te 3 films. Nat Commun 2024; 15:2521. [PMID: 38514626 PMCID: PMC10958038 DOI: 10.1038/s41467-024-46836-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 03/06/2024] [Indexed: 03/23/2024] Open
Abstract
Dual-parameter pressure-temperature sensors are widely employed in personal health monitoring and robots to detect external signals. Herein, we develop a flexible composite dual-parameter pressure-temperature sensor based on three-dimensional (3D) spiral thermoelectric Bi2Te3 films. The film has a (000l) texture and good flexibility, exhibiting a maximum Seebeck coefficient of -181 μV K-1 and piezoresistance gauge factor of approximately -9.2. The device demonstrates a record-high temperature-sensing performance with a high sensing sensitivity (-426.4 μV K-1) and rapid response time (~0.95 s), which are better than those observed in most previous studies. In addition, owing to the piezoresistive effect in the Bi2Te3 film, the 3D-spiral deviceexhibits significant pressure-response properties with a pressure-sensing sensitivity of 120 Pa-1. This innovative approach achieves high-performance dual-parameter sensing using one kind of material with high flexibility, providing insight into the design and fabrication of many applications, such as e-skin.
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Affiliation(s)
- Hailong Yu
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Zhenqing Hu
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Juan He
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Yijun Ran
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Yang Zhao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Zhi Yu
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China.
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - Kaiping Tai
- School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China.
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
- Liaoning professional technology innovation center for integrated circuit thermal management, Shenyang, 110016, China.
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5
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Roschelle M, Rabbani R, Papageorgiou E, Zhang H, Cooperberg M, Stohr BA, Niknejad A, Anwar M. Multicolor fluorescence microscopy for surgical guidance using a chip-scale imager with a low-NA fiber optic plate and a multi-bandpass interference filter. BIOMEDICAL OPTICS EXPRESS 2024; 15:1761-1776. [PMID: 38495694 PMCID: PMC10942699 DOI: 10.1364/boe.509235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 03/19/2024]
Abstract
In curative-intent cancer surgery, intraoperative fluorescence imaging of both diseased and healthy tissue can help to ensure the successful removal of all gross and microscopic diseases with minimal damage to neighboring critical structures, such as nerves. Current fluorescence-guided surgery (FGS) systems, however, rely on bulky and rigid optics that incur performance-limiting trade-offs between sensitivity and maneuverability. Moreover, many FGS systems are incapable of multiplexed imaging. As a result, clinical FGS is currently limited to millimeter-scale detection of a single fluorescent target. Here, we present a scalable, lens-less fluorescence imaging chip, VISION, capable of sensitive and multiplexed detection within a compact form factor. Central to VISION is a novel optical frontend design combining a low-numerical-aperture fiber optic plate (LNA-FOP) and a multi-bandpass interference filter, which is affixed to a custom CMOS image sensor. The LNA-FOP acts as a planar collimator to improve resolution and compensate for the angle-sensitivity of the interference filter, enabling high-resolution and multiplexed fluorescence imaging without lenses. We show VISION is capable of detecting tumor foci of less than 100 cells at near video framerates and, as proof of principle, can simultaneously visualize both tumors and nerves in ex vivo prostate tissue.
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Affiliation(s)
- Micah Roschelle
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Rozhan Rabbani
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Efthymios Papageorgiou
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Hui Zhang
- Department of Radiation Oncology, University of California, San Francisco, California 94158, USA
| | - Matthew Cooperberg
- Department of Urology, University of California, San Francisco, California 94158, USA
| | - Bradley A Stohr
- Department of Pathology, University of California, San Francisco, California 94158, USA
| | - Ali Niknejad
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
| | - Mekhail Anwar
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA
- Department of Radiation Oncology, University of California, San Francisco, California 94158, USA
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6
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Roschelle M, Rabbani R, Papageorgiou E, Zhang H, Cooperberg M, Stohr BA, Niknejad A, Anwar M. Multicolor fluorescence microscopy for surgical guidance using a chip-scale imager with a low-NA fiber optic plate and a multi-bandpass interference filter. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.16.562247. [PMID: 37904924 PMCID: PMC10614810 DOI: 10.1101/2023.10.16.562247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
In curative-intent cancer surgery, intraoperative fluorescence imaging of both diseased and healthy tissue can help to ensure successful removal of all gross and microscopic disease with minimal damage to neighboring critical structures, such as nerves. Current fluorescence-guided surgery (FGS) systems, however, rely on bulky and rigid optics that incur performance-limiting trade-offs between sensitivity and maneuverability. Moreover, many FGS systems are incapable of multiplexed imaging. As a result, clinical FGS is currently limited to millimeter-scale detection of a single fluorescent target. Here we present a scalable, lens-less fluorescence imaging chip, VISION, capable of sensitive and multiplexed detection within a compact form factor. Central to VISION is a novel optical frontend design combining a low-numerical-aperture fiber optic plate (LNA-FOP) and a multi-bandpass interference filter, which is affixed to a custom CMOS image sensor. The LNA-FOP acts as a planar collimator to improve resolution and compensate for the angle-sensitivity of the interference filter, enabling high-resolution and multiplexed fluorescence imaging without lenses. We show VISION is capable of detecting tumor foci of less than 100 cells at near video framerates and, as proof of principle, can simultaneously visualize both tumor and nerves in ex vivo prostate tissue.
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7
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Xie S, Kong X, Cong J, Mao X, Fu Y. Design and simulation of a near-infrared enhanced Si-based SPAD for an automotive LiDAR. APPLIED OPTICS 2023; 62:7380-7386. [PMID: 37855506 DOI: 10.1364/ao.498189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/10/2023] [Indexed: 10/20/2023]
Abstract
A near-infrared (NIR)-enhanced single-photon avalanche diode (SPAD) with a retrograded NM/XP junction for an automotive LiDAR was designed based on CSMC 0.18 µm BCD technology. A 3 µm depth NM/XP junction embedded in a lightly doped deep p-well (DP) improves the absorption efficiency in the NIR regime; the photo-generated electrons generated in the depletion region are efficiently collected into the central multiplication region by a drift process, and then the impact ionization is triggered by the strong field, resulting in a high photon detection efficiency (PDE). Additionally, the deep NM/XP junction and the buried layer effectively isolate the dark noise originating from the interface and the substrate. The SPAD was initially simulated by numerical calculation, and then was evaluated with active quench/reset electronics in a circuit simulator. The results revealed that the SPAD with an active area of 314µm 2 achieves a PDE of 16.2% at 905 nm and a dark count rate (DCR) of 1.46H z/µm 2, with an excess bias of 5 V at room temperature. The designed SPAD is well suited for the low-cost, miniaturized automotive LiDAR.
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8
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Schaufler A, Sanin AY, Sandalcioglu IE, Hartmann K, Croner RS, Perrakis A, Wartmann T, Boese A, Kahlert UD, Fischer I. Concept of a fully-implantable system to monitor tumor recurrence. Sci Rep 2023; 13:16362. [PMID: 37773315 PMCID: PMC10541913 DOI: 10.1038/s41598-023-43226-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/21/2023] [Indexed: 10/01/2023] Open
Abstract
Current treatment for glioblastoma includes tumor resection followed by radiation, chemotherapy, and periodic post-operative examinations. Despite combination therapies, patients face a poor prognosis and eventual recurrence, which often occurs at the resection site. With standard MRI imaging surveillance, histologic changes may be overlooked or misinterpreted, leading to erroneous conclusions about the course of adjuvant therapy and subsequent interventions. To address these challenges, we propose an implantable system for accurate continuous recurrence monitoring that employs optical sensing of fluorescently labeled cancer cells and is implanted in the resection cavity during the final stage of tumor resection. We demonstrate the feasibility of the sensing principle using miniaturized system components, optical tissue phantoms, and porcine brain tissue in a series of experimental trials. Subsequently, the system electronics are extended to include circuitry for wireless energy transfer and power management and verified through electromagnetic field, circuit simulations and test of an evaluation board. Finally, a holistic conceptual system design is presented and visualized. This novel approach to monitor glioblastoma patients is intended to early detect recurrent cancerous tissue and enable personalization and optimization of therapy thus potentially improving overall prognosis.
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Affiliation(s)
- Anna Schaufler
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
- Department of Neurosurgery, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
- INKA Health Tech Innovation Lab., Medical Faculty, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Ahmed Y Sanin
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
- Research Campus STIMULATE, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - I Erol Sandalcioglu
- Department of Neurosurgery, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Karl Hartmann
- Department of Neurosurgery, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Roland S Croner
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Aristotelis Perrakis
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Thomas Wartmann
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Axel Boese
- INKA Health Tech Innovation Lab., Medical Faculty, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Ulf D Kahlert
- Molecular and Experimental Surgery, Clinic for General-, Visceral-, Vascular - and Transplant Surgery, Faculty of Medicine, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
- Research Campus STIMULATE, Otto-von-Guericke University Magdeburg, 39120, Magdeburg, Germany
| | - Igor Fischer
- Department of Neurosurgery, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225, Düsseldorf, Germany.
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9
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Wu F, She Y, Cheng Z, Hu S, Liu G, Xiao S. Anomalous polarization-sensitive Fabry-Perot resonance in a one-dimensional photonic crystal containing an all-dielectric metamaterial defect. OPTICS EXPRESS 2023; 31:32669-32683. [PMID: 37859064 DOI: 10.1364/oe.499830] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/24/2023] [Indexed: 10/21/2023]
Abstract
Owing to polarization-independent property of propagating phases inside isotropic dielectric layers, Fabry-Perot resonances in metal-dielectric-metal sandwich structures and one-dimensional (1-D) photonic crystals (PhCs) with isotropic dielectric defects are polarization-insensitive. Herein, we introduce an all-dielectric elliptical metamaterial (EMM) defect into a 1-D PhC to realize an anomalous polarization-sensitive Fabry-Perot resonance empowered by the polarization-sensitive property of the propagating phase inside the all-dielectric EMM layer. The wavelength difference of the Fabry-Perot resonance between transverse magnetic and transverse electric polarizations is larger than 100 nm at the incident angle of 45 degrees. Enabled by the polarization-sensitive property of the Fabry-Perot resonance, high-performance polarization selectivity can be achieved in a broad angle range. Our work offers a viable recipe, well within the reach of current fabrication technique, to explore polarization-dependent physical phenomena and devices.
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10
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Fagihi MA, Premathilaka C, O’Neill T, Garré M, Bhattacharjee S. An Investigation into the Acidity-Induced Insulin Agglomeration: Implications for Drug Delivery and Translation. ACS OMEGA 2023; 8:25279-25287. [PMID: 37483254 PMCID: PMC10357556 DOI: 10.1021/acsomega.3c02482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 06/23/2023] [Indexed: 07/25/2023]
Abstract
Insulin undergoes agglomeration with (subtle) changes in its biochemical environment, including acidity, application of heat, ionic imbalance, and exposure to hydrophobic surfaces. The therapeutic impact of such unwarranted insulin agglomeration is unclear and needs further evaluation. A systematic investigation was conducted on recombinant human insulin-with or without labeling with fluorescein isothiocyanate-while preparing insulin suspensions (0.125, 0.25, and 0.5 mg/mL) at pH 3. The suspensions were incubated (37 °C) and analyzed at different time points (t = 2, 4, 24, 48, and 72 h). Transmission electron microscopy and nanoparticle tracking analysis identified colloidally stable (zeta potential 15 ± 5 mV) spherical agglomerates of unlabeled insulin (100-500 nm). Circular dichroism established the preservation of insulin's secondary structure rich in α-helices despite exposure to an acidic environment (pH 3) for 72 h. Furthermore, fluorescence lifetime imaging microscopy illustrated an acidic core inside these spherical agglomerates, while the acidity gradually lessened toward the periphery. Some of these smaller agglomerates fused to form larger chunks with discrete zones of acidity. The data indicated a primary nucleation-driven mechanism of acid-induced insulin agglomeration under physiologically relevant conditions.
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Affiliation(s)
- Megren
H. A. Fagihi
- School
of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Clinical
Laboratory Sciences Department, College of Applied Medical Sciences, Najran University, Najran 55461, Kingdom of Saudi Arabia
| | - Chanaka Premathilaka
- Institute
of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Tartu 51006, Estonia
| | - Tiina O’Neill
- Conway
Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Massimiliano Garré
- Super-Resolution
Imaging Consortium, Royal College of Surgeons
in Ireland University of Medicine and Health Sciences, Dublin D02 YN77, Ireland
| | - Sourav Bhattacharjee
- School of
Veterinary Medicine, University College
Dublin, Belfield, Dublin 4, Ireland
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11
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Pollmann EH, Yin H, Uguz I, Dubey A, Wingel KE, Choi JS, Moazeni S, Gilhotra Y, Pavlovsky VA, Banees A, Boominathan V, Robinson J, Veeraraghavan A, Pieribone VA, Pesaran B, Shepard KL. Subdural CMOS optical probe (SCOPe) for bidirectional neural interfacing. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.07.527500. [PMID: 36798295 PMCID: PMC9934536 DOI: 10.1101/2023.02.07.527500] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Optical neurotechnologies use light to interface with neurons and can monitor and manipulate neural activity with high spatial-temporal precision over large cortical extents. While there has been significant progress in miniaturizing microscope for head-mounted configurations, these existing devices are still very bulky and could never be fully implanted. Any viable translation of these technologies to human use will require a much more noninvasive, fully implantable form factor. Here, we leverage advances in microelectronics and heterogeneous optoelectronic packaging to develop a transformative, ultrathin, miniaturized device for bidirectional optical stimulation and recording: the subdural CMOS Optical Probe (SCOPe). By being thin enough to lie entirely within the subdural space of the primate brain, SCOPe defines a path for the eventual human translation of a new generation of brain-machine interfaces based on light.
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12
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Fang B, Shen Y, Peng B, Bai H, Wang L, Zhang J, Hu W, Fu L, Zhang W, Li L, Huang W. Small‐Molecule Quenchers for Förster Resonance Energy Transfer: Structure, Mechanism, and Applications. Angew Chem Int Ed Engl 2022; 61:e202207188. [DOI: 10.1002/anie.202207188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Bin Fang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
| | - Yu Shen
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Bo Peng
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Hua Bai
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Limin Wang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Jiaxin Zhang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Wenbo Hu
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Li Fu
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
| | - Wei Zhang
- Teaching and Evaluation Center of Air Force Medical University Xi'an 710032 China
| | - Lin Li
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- The Institute of Flexible Electronics (IFE, Future Technologies) Xiamen University Xiamen 361005, Fujian China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- The Institute of Flexible Electronics (IFE, Future Technologies) Xiamen University Xiamen 361005, Fujian China
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13
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Huang H, Wang H, Li S, Jiang J, Liu Y, Cai M, Shao L, Chen H, Wang J. WS 2-Flake-Sandwiched, Au-Nanodisk-Enabled High-Quality Fabry-Pérot Nanoresonators for Photoluminescence Modulation. ACS NANO 2022; 16:14874-14884. [PMID: 36036762 DOI: 10.1021/acsnano.2c05769] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The increasing demand for compact and high-performance photonic devices drives the development of optical resonators with nanoscale sizes and ultrahigh quality factors. Fabry-Pérot (FP) resonators, the most widely employed optical resonators, can support ultrahigh quality factors in the simple structure, which is particularly attractive for applications in lasers, filters, and ultrasensitive sensors. However, the construction of FP resonators with both nanoscale sizes and high quality factors has still faced challenges. Herein we demonstrate the construction of FP nanoresonators out of single Au nanodisks (NDs) and a Au film, with a WS2 flake sandwiched in between. The atomically flat surfaces of the WS2 flake and Au NDs benefit mirror alignment and boost the quality factor up to 76. The nanoresonators can support FP resonances with different mode orders in the visible region. The optical properties and formation mechanisms of the high-quality FP modes are systematically studied. The FP modes are further hybridized with excitons in the WS2 flake spacer, enabling the modulation of the WS2 indirect band gap emissions. Our study combines the advantages of plasmonic nanoparticles and FP resonators, providing a promising platform for the development of compact nanophotonic devices such as tunable nanolasers, smart sensors, and photonic-circuit elements.
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Affiliation(s)
- He Huang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, 999077, China
| | - Hao Wang
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Shasha Li
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, 999077, China
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Jingyao Jiang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Yi Liu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, 999077, China
| | - Mingyang Cai
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, 999077, China
| | - Lei Shao
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Huanjun Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, 999077, China
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14
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Mitra E, Guo R, Nelson S, Nagarajan N, Menon R. Computational microscopy for fast widefield deep-tissue fluorescence imaging using a commercial dual-cannula probe. OPTICS CONTINUUM 2022; 1:2091-2099. [PMID: 37378086 PMCID: PMC10299805 DOI: 10.1364/optcon.469219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/25/2022] [Indexed: 06/29/2023]
Abstract
A solid-glass cannula serves as a micro-endoscope that can deliver excitation light deep inside tissue while also collecting emitted fluorescence. Then, we utilize deep neural networks to reconstruct images from the collected intensity distributions. By using a commercially available dual-cannula probe, and training a separate deep neural network for each cannula, we effectively double the field of view compared to prior work. We demonstrated ex vivo imaging of fluorescent beads and brain slices and in vivo imaging from whole brains. We clearly resolved 4 μm beads, with FOV from each cannula of 0.2 mm (diameter), and produced images from a depth of ~1.2 mm in the whole brain, currently limited primarily by the labeling. Since no scanning is required, fast widefield fluorescence imaging limited primarily by the brightness of the fluorophores, collection efficiency of our system, and the frame rate of the camera becomes possible.
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Affiliation(s)
- Ekata Mitra
- Department of Electrical & Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
| | - Ruipeng Guo
- Department of Electrical & Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
| | - Soren Nelson
- Department of Computer Science, Boston University, Boston, MA 02215, USA
| | - Naveen Nagarajan
- Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
| | - Rajesh Menon
- Department of Electrical & Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA
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15
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Fang B, Shen Y, Peng B, Bai H, Wang L, Zhang J, Hu W, Fu L, Zhang W, Li L, Huang W. Small Molecule Quenchers for Förster Resonance Energy Transfer: Structure, Mechanism and Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bin Fang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Yu Shen
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Bo Peng
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Hua Bai
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Limin Wang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Jiaxin Zhang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Wenbo Hu
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Li Fu
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Wei Zhang
- Air Force Medical University Teaching and Evaluation Center CHINA
| | - Lin Li
- Nanjing Tech University Institute of Advanced Materials 30 South Puzhu Road 210008 Nanjing CHINA
| | - Wei Huang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
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