Article
Computer Science, Hardware & Architecture
Miao Zhang, Fangxin Wang, Yifei Zhu, Jiangchuan Liu, Bo Li
Summary: The widespread deployment of networked cameras has increased the use of video analytics applications, but the traditional cloud service deployment does not match the high dynamic demands. Serverless computing has the potential to be a game-changer in this field.
Article
Engineering, Electrical & Electronic
Goksu Karadag, Muhammad Shahid Iqbal, Sinem Coleri
Summary: This paper introduces the radio frequency (RF) energy harvesting paradigm into the wireless networked control system framework and explores solutions for optimal power control, energy harvesting, and scheduling problems. By proposing polynomial-time heuristic algorithms, the study achieves efficient scheduling and optimization, outperforming traditional algorithms significantly in terms of adaptivity, delay, reliability, and average runtime.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Kaveh Barri, Pengcheng Jiao, Qianyun Zhang, Jun Chen, Zhong Lin Wang, Amir H. Alavi
Summary: Researchers have introduced a novel concept called self-aware composite mechanical metamaterial (SCMM) that can transform mechanical metamaterials into nanogenerators and active sensing mediums. By studying new paradigms, they have achieved contact electrification between snapping microstructures composed of topologically different triboelectric materials, leading to self-powering and self-sensing meta-tribomaterial systems.
Review
Chemistry, Physical
Wanheng Lu, Wei Li Ong, Ghim Wei Ho
Summary: Atmospheric moisture, with its significant water and energy potential, can be harnessed through nanomaterial advancements for water harvesting and energy generation. This review explores sorbent-assisted atmospheric water harvesting (AWH) and moisture-enabled energy generation (MEEG), highlighting their correlation and discussing mechanisms, innovative materials, device development, and integration with renewable energy sources. The future directions for water and energy harvesting from moisture in scientific research and practical applications are also outlined.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Xun Zhao, Austin Chang, Justin Li, Jing Xu, John Hollister, Ziyuan Che, Xiao Wan, Junyi Yin, Shaolei Wang, Shinyoung Lee, Pirouz Kavehpour, Jun Chen
Summary: Advances in wearable bioelectronics have the potential to transform healthcare from reactive to proactive by focusing on disease prevention and health promotion. This study presents the development of an air-permeable textile (APT) bioelectronics that utilizes a liquid metal electrode encapsulated between layers of electrospun Polycaprolactone textile. The APT bioelectronics demonstrates stable performance, producing an open-circuit voltage of 12 V and a short-circuit current of 0.12 mA. With a drying rate of 5.07% min(-1), the APT bioelectronics offers improved breathability and wearing comfort compared to conventional fabrics.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Miaomiao Cui, Yawei Feng, Hao Wu, Yuankai Jin, Wanbo Li, Zuankai Wang
Summary: Engineering materials in marine surroundings are subject to corrosion. Utilizing the corrosive marine conditions to harvest kinetic ocean wave energy is a promising solution. Leveraging water-solid triboelectrification for active anticorrosion by collecting low-frequency wave energy is efficient.
Article
Engineering, Multidisciplinary
Zimin Jiang, Zefan Tang, Peng Zhang, Yanyuan Qin
Summary: The PASS approach protects DER inverters from various power-bot attacks by utilizing software-defined networking techniques and a coordinated detection method, enhancing the security and scalability of microgrids. This method efficiently identifies the location and type of power-bot attacks without disrupting normal operations, validating its efficacy and practicality for securing NMs.
Article
Nanoscience & Nanotechnology
Ali Matin Nazar, King-James Idala Egbe, Pengcheng Jiao, Yuzhou Wang, Yang Yang
Summary: The study introduces magnetic lifting triboelectric nanogenerators (ml-TENG) for energy harvesting and active sensing under cyclic loading like traffic. By utilizing magnetic force to induce repulsive force for relative displacement between electrodes and dielectric layers in sliding mode, the ml-TENG demonstrated strong electrical performance with open-circuit voltage of 4 V and output power of 340 mu W per capsule. The development of a self-powered velocity active sensing system using ml-TENG, achieving a maximum open-circuit voltage of 7.2 V at a velocity of 15 km/h during field tests, showcases its potential for real-world applications such as velocity detection.
Article
Acoustics
Xiang Shi, Qingyang Yu, Zhiwei Wu, Jin-Yang Li, Songye Zhu
Summary: This study aims to develop an innovative self-powered active suspension using a dual-function active electromagnetic damper (DF-AEMD). The DF-AEMD is capable of providing force tracking and energy harvesting functions simultaneously, achieving better performance than traditional semi-active dampers in terms of force tracking accuracy and energy harvesting efficiency.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Materials Science, Multidisciplinary
Zhiyi Wu, Peng Wang, Binbin Zhang, Hengyu Guo, Chaoyu Chen, Zhiming Lin, Xia Cao, Zhong Lin Wang
Summary: Triboelectric foam (T-Foam), composed of a foam material with an embedded soft electrode, inherits dominant mechanical properties of foam. Its high durability and stability allows for easy integration into smart applications, with consistent output performance even after multiple tests.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Wenjian Li, Liqiang Lu, Xianpeng Fu, Chi Zhang, Katja Loos, Yutao Pei
Summary: This study proposes a Karman vortex street driven membrane triboelectric nanogenerator for ultra-low speed wind energy harvesting and flow sensing. By introducing Karman vortex, the energy transducing efficiency of the nanogenerator is significantly increased at low wind speeds. It is successfully demonstrated to detect gas pipeline leakage with high sensitivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Reza Azmi, Mehdi Mirzaei, Amir Habibzadeh-Sharif
Summary: This paper presents a new optimal control algorithm for the energy-regenerative active suspension system (RASS) that considers both energy regeneration and ride comfort. The proposed algorithm employs a realistic nonlinear model of the suspension system and achieves high performance. The results show that the proposed control strategy delivers lower acceleration and significantly increases harvested energy compared to previous strategies.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Automation & Control Systems
Ge Shi, Jian Chang, Yinshui Xia, Xiudeng Wang, Huakang Xia, Qing Li
Summary: This article presents a multisource collaborative energy extraction circuit (MSC-EC) that can extract energy from vibration, ambient light, and thermal energy simultaneously. It utilizes maximum power point tracking (MPPT) and a single inductor to extract energy from piezoelectric transducer (PZT) and photovoltaic (PV) cell. The circuit can also collaborate with a thermoelectric generator (TEG) to improve the efficiency of thermal energy extraction. Experimental results show an MPPT efficiency of about 83% for the PV cell and a maximum energy extraction efficiency of about 74% for the TEG. The MSC-EC achieves a maximum output power of 4.2 mW under certain conditions.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Elisa Lenzi, Dorleta Jimenez de Aberasturi, Malou Henriksen-Lacey, Paula Pineiro, Ayse J. Muniz, Joerg Lahann, Luis M. Liz-Marzan
Summary: By embedding fluorescent labels and SERS-active gold nanoparticles (AuNPs) into 3D-printed multifunctional scaffolds, real-time monitoring of cell proliferation can be achieved, providing a simple method for tracking cell dynamics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Physical
Yeon Sik Choi, Sang-Woo Kim, Sohini Kar-Narayan
Summary: Tribopower technologies have gained attention for efficiently transforming vibrational and frictional energy into electrical energy. Material science and nanotechnology advancements have paved the way for high-performance triboelectric harvesters, but challenges remain in understanding and optimizing material properties for future development.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Seyed Mehdi Sattari-Esfahlan, Yvan Bonnassieux, Ioannis Kymissis, Chang-Hyun Kim
Summary: This study demonstrates a high-performance resistive-switching memory cell based on biomass-derived nanoporous graphene (NPG) materials. A new processing method is used to create 3D NPG from Saccharum officinarum, revealing the oxygen ion migration and charge-injection modulation as the key mechanism.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Zhaowen Wang, Yudong Zhang, Yuka Onizuka, Peter R. Kinget
Summary: In this paper, a high-accuracy, low-jitter MPCG based on MPIL-ROSC and QDLL is proposed, which successfully breaks the tradeoff between jitter and phase accuracy in traditional ROS. Experimental results show that the performance of the MPCG is excellent.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2022)
Article
Energy & Fuels
Hyuna Lee, Aniket Rana, Ioannis Kymissis, Chang-Hyun Kim
Summary: This article provides a new insight into the charge-carrier mobility in perovskite solar cells using experimentally calibrated numerical simulations. It is found that increasing the mobility substantially improves the short-circuit current, but simultaneously decreases the open-circuit voltage, resulting in efficiency roll-off in the high-mobility regime. The increased bending of potential profiles and decreased electric field due to carrier diffusion are identified as the key mechanisms behind this behavior, providing a theoretical guideline for material and device engineering.
Article
Materials Science, Multidisciplinary
Muhammad Tahir, Ikram Ud Din, Muhammad Zeb, Fakhra Aziz, Fazal Wahab, Zahid Gul, Alamgeer, Mahidur R. Sarker, Sajad Ali, Sawal Hamid Md Ali, Ioannis Kymissis
Summary: This paper reports on the fabrication and photovoltaic characteristics of a heterojunction solar cell based on an organic small molecule semiconductor, N749-BD. The study shows that N749-BD has the potential to be utilized in low-cost, simple manufacturing process, and high-performance solar cells.
Article
Materials Science, Multidisciplinary
Vikrant Kumar, Caroline Yu, Christine K. McGinn, Krista E. Perks, Sarah M. Thompson, Nathaniel B. Sawtell, Ioannis Kymissis
Summary: This paper presents an electrode array and system that can stimulate specific regions of an electroreceptor array, providing potential for high spatial resolution stimulation and mapping of electrosensory systems.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Ilaria Fratelli, Laura Basirico, Andrea Ciavatti, Zachary A. Lamport, John E. Anthony, Ioannis Kymissis, Beatrice Fraboni
Summary: Organic semiconductors are promising materials for X-ray detectors due to their mechanical flexibility and large coverage. The detection efficiency can be enhanced by considering the photoconductive gain effect. This study demonstrates a flexible arrayed thin-film X-ray detector with record X-ray sensitivities using controlled solution deposition and crystallization processes.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Engineering, Electrical & Electronic
Keith Behrman, Ioannis Kymissis
Summary: Micro light-emitting diodes (microLEDs) are an emerging display technology with advantages in brightness, color, pixel size, and lifetime. They can be used to create novel display applications and have the potential to become the next prominent display technology in consumer electronics.
NATURE ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Benjamin G. Cary, John Z. Zhang, Christopher McHugh, Ioannis Kymissis, Elizabeth S. Olson, Hideko Heidi Nakajima, Jeffrey H. Lang
Summary: This article presents an implantable microphone for sensing the displacement of the umbo, and describes the structure and working principle of the sensor. The sensor enables the full implantation of assistive hearing devices, restoring hearing and improving sound localization in noisy environments.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Yue Wang, Minjae Kim, Akendra Singh Chabungbam, Dong-eun Kim, Qingyi Shao, Ioannis Kymissis, Hyung-Ho Park
Summary: This study prepared La2Ti2O7-x thin film by atomic layer deposition on TiN substrate, and confirmed its clockwise forming-less resistive switching behavior. The resistive switching mechanism was achieved by voltage-driven and oxygen vacancy doping-controlled Mott transition.
SCRIPTA MATERIALIA
(2023)
Article
Optics
Vikrant Kumar, Keith Behrman, Forest Speed, Catherine A. Saladrigas, Omkar Supekar, Zicong Huang, V. Ictor M. Bright, C. Ristin G. Welle, Diego Restrepo, Juliet T. Gopinath, Emily A. Gibson, Ioannis Kymissis
Summary: Optical sectioning structured illumination microscopy (OS-SIM) utilizes MicroLEDs as a light source to generate required illumination patterns, providing optical sectioning capability in wide-field microscopy. A directly addressable striped microLED microdisplay with 100 rows on a flexible cable is presented as an OS-SIM light source in a benchtop setup. OS-SIM implementation in a benchtop setup demonstrates improved contrast in reconstructed optically sectioned images compared with pseudo-widefield imaging. MicroLED based OS-SIM offers a new capability for deep tissue widefield imaging.
Article
Chemistry, Physical
L. Jay Deiner, Nicholas W. Gothard, James Buckley, Dave Clarkson, Steve Greenbaum, Itay Rubin, Megan Noga, Chrissy McGinn, Emily Hsieh, Ioannis Kymissis, Kalle Levon
Summary: The drive towards all solid state lithium ion batteries necessitates the discovery of new synthesis methods for hybrid solid electrolytes that simultaneously optimize lithium ion conductivity and processability by chemically associating organic and inorganic components. In this study, a mechanochemical milling synthesis method is presented for the first time to produce an ambient processable hybrid lithium aluminum germanium phosphate (Li1.5Al0.5Ge1.5(PO4)3)/polyethylene glycol (PEG) solid electrolyte. Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA) confirm that the mechanochemical milling procedure induces a condensation reaction between the ceramic and organic phases, resulting in the formation of water. Solid state nuclear magnetic resonance (NMR) spectroscopy verifies the bonding proximity between protons from the polymer or the water product to the Q2 metaphosphate sites of the glassy phase of the ceramic. This work establishes the viability of mechanochemical milling as a synthetic pathway for a class of promising ambient processable hybrid electrolytes.
SOLID STATE IONICS
(2023)
Article
Materials Science, Multidisciplinary
Joon Hyung Park, Ye Ji Shin, Ioannis Kymissis, Yongmin Jeon, Chang-Hyun Kim
Summary: We show the frequency-triggered internal circuit transition in high-performance organic light-emitting diodes. Blue fluorescent light-emitting devices are made using a stable and efficient host-dopant material system. Broad-band impedance spectroscopy analysis reveals two abrupt spectral transitions occurring at two small-signal frequency ranges in these diodes. By fitting Nyquist plots recorded under a wide range of conditions to an equivalent circuit model, we identify the key interface and bulk parameters. The sharp increases in conductance identified from this analysis are conceptually linked to trap deactivation at specific cut-off frequencies, suggesting possibilities for AC applications of organic light-emitting diodes.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Proceedings Paper
Computer Science, Theory & Methods
Wei Fan, Kevin A. Kam, Haokai Zhao, Patricia J. Culligan, Ioannis Kymissis
Summary: An optical absorbance-based sensor has been developed to measure the concentration of essential nutrients in urban soil. The sensor is capable of operating in different ambient light settings and has shown that street-tree pits contain higher levels of nutrients compared to park spaces. This new technology will contribute to better monitoring of soil nutrient conditions and the promotion of healthy green spaces in urban environments.
2022 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT ENVIRONMENTS (IE)
(2022)
Article
Nanoscience & Nanotechnology
Yue Wang, Minjae Kim, Malik Abdul Rehman, Akendra Singh Chabungbam, Dong-eun Kim, Hong Sub Lee, Ioannis Kymissis, Hyung-Ho Park
Summary: This study introduces a new type of nonvolatile memory, Mott memory, which utilizes oxygen migration to drive the transition from metal to insulator. By exploring the effects of a zinc oxide interlayer on the oxygen migration process, the research contributes to a better understanding of the resistive switching mechanism in Mott memory and improves the on/off current ratio of lanthanum titanium oxide.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
John Z. Zhang, Benjamin G. Cary, Aaron Yeiser, Christopher McHugh, Hideko Heidi Nakajima, Jeffrey H. Lang, Ioannis Kymissis, Elizabeth S. Olson
Summary: This paper presents the analysis, design, and experimental characterization of a piezoelectric intracochlear hydrophone and amplifier system for totally-implantable cochlear implants. The system achieves high sensitivity, wide bandwidth, and low output noise. The proposed implantable microphone proves to be a promising candidate for cochlear implants.
2022 IEEE 35TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS CONFERENCE (MEMS)
(2022)