A5066360038- Advanced Sensor and Energy Harvesting Materials
- Advanced Materials and Mechanics
- Advanced Chemical Physics Studies
- Quantum Dots Synthesis And Properties
- Neuroscience and Neural Engineering
- Modular Robots and Swarm Intelligence
- Non-Invasive Vital Sign Monitoring
- Surface and Thin Film Phenomena
- ZnO doping and properties
- Additive Manufacturing and 3D Printing Technologies
- Tactile and Sensory Interactions
- Photoreceptor and optogenetics research
- Electron and X-Ray Spectroscopy Techniques
- Respiratory Support and Mechanisms
- Graphene research and applications
- Copper-based nanomaterials and applications
- Sensor Technology and Measurement Systems
- Interactive and Immersive Displays
- Chalcogenide Semiconductor Thin Films
- Obstructive Sleep Apnea Research
- Carbon Nanotubes in Composites
- Semiconductor materials and devices
- Neural dynamics and brain function
- Force Microscopy Techniques and Applications
- Pressure Ulcer Prevention and Management
Sibel (United States)
2021-2023
Lux Research (United States)
2019-2022
University of Illinois Urbana-Champaign
2015-2019
Hanyang University
2004-2006
Sensitive sensing Neonatal care, particularly for premature babies, is complicated by the infants' fragility and need a large number of tethered sensors to be attached their tiny bodies. Chung et al. developed pair that only require water adhere skin allow untethered monitoring key vital signs (see Perspective Guinsburg). On-board data processing allowed efficient wireless near-field communication using standard protocols. The absence cables makes it easier handle infants allows skin-to-skin...
Here we demonstrate materials and operating conditions that allow for high-resolution printing of layers quantum dots (QDs) with precise control over thickness submicron lateral resolution capabilities use as active QD light-emitting diodes (LEDs). The shapes thicknesses the patterns exhibit systematic dependence on dimensions nozzle ink composition in ways nearly arbitrary, when exploited a fully automated tool. Homogeneous arrays QDs serve basis corresponding LEDs excellent performance....
Low modulus, compliant systems of sensors, circuits and radios designed to intimately interface with the soft tissues human body are growing interest, due their emerging applications in continuous, clinical-quality health monitors advanced, bioelectronic therapeutics. Although recent research establishes various materials mechanics concepts for such technologies, all existing approaches involve simple, two-dimensional (2D) layouts constituent micro-components interconnects. Here we introduce...
Dual-functioning displays, which can simultaneously transmit and receive information energy through visible light, would enable enhanced user interfaces device-to-device interactivity. We demonstrate that double heterojunctions designed into colloidal semiconductor nanorods allow both efficient photocurrent generation a photovoltaic response electroluminescence within single device. These dual-functioning, all-solution-processed double-heterojunction nanorod light-responsive light-emitting...
Capabilities for continuous monitoring of pressures and temperatures at critical skin interfaces can help to guide care strategies that minimize the potential pressure injuries in hospitalized patients or individuals confined bed. This paper introduces a soft, skin-mountable class sensor system this purpose. The design includes pressure-responsive element based on membrane deflection battery-free, wireless mode operation capable multi-site measurements strategic locations across body. Such...
Abstract Individuals who are unable to walk independently spend most of the day in a wheelchair. This population is at high risk for developing pressure injuries caused by sitting. However, early diagnosis and prevention these still remain challenging. Herein, we introduce battery-free, wireless, multimodal sensors movable system continuous measurement pressure, temperature, hydration skin interfaces. The device design includes crack-activated sensor with nanoscale encapsulations enhanced...
Here, we report multilayer stacking of films quantum dots (QDs) for the purpose tailoring energy band alignment between charge transport layers and light emitting different color in dot light-emitting diodes (QD LED) maximum efficiency full operation. The performance QD LEDs formed by transfer printing compares favorably to that conventional devices fabricated spin-casting. Results indicate zinc oxide (ZnO) titanium dioxide (TiO2) can serve effectively as electron (ETLs) red green/blue LEDs,...
Abstract This paper describes deterministic assembly processes for transforming conventional, planar devices based on flexible printed circuit board (FPCB) platforms into those with 3D architectures in a manner that is fully compatible off‐the‐shelf packaged or unpackaged component parts. The strategy involves mechanically guided geometry transformation by out‐of‐plane buckling motions follow from controlled forces imposed at precise locations across the FPCB substrate prestretched elastomer...
Recently developed approaches in deterministic assembly allow for controlled, geometric transformation of two-dimensional structures into complex, engineered three-dimensional layouts. Attractive features include applicability to wide ranging layout designs and dimensions along with the capacity integrate planar thin film materials device The work reported here establishes further capabilities directly embedding high-performance electronic devices resultant 3D constructs based on silicon...
The recent emergence of materials for electronic systems that are capable programmable self‐destruction and/or bio/eco‐resorption creates the potential important classes devices cannot be easily addressed using conventional technologies, ranging from temporary biomedical implants to enviromentally benign environmental monitors hardware secure data systems. Although most previous demonstrations rely on wet chemistry initiate transient processes degradation/decomposition, options in “dry...
Using first-principles density-functional calculations, we investigated two competing pathways for the dissociation of water and ammonia on a Si(001) surface. For both systems, found that, in addition to conventionally accepted intradimer transfer H atom, interdimer atom can be equally probable with same reaction mechanism. Our analysis shows that occur through Lewis acid−base between partially positive ion electron-abundant up buckled Si dimer. The result not only supports recently proposed...
Subscription RequiredScientific InvestigationsA new wearable diagnostic home sleep testing platform: comparison with available systems and benefits of multinight assessments Jessica Walter, MD, MSCE, Jong Yoon Lee, BS, Stefanida Blake, MS, Lakshmi Kalluri, MCA, Mark Cziraky, PharmD, Eric Stanek, Julie Miller, MPH, PMP, Brian J. Harty, MA, Lian Yu, Junbin Park, Michael Zhang, BA, Sarah Coughlin, Alexa Serao, Jungyup Alyssa Buban, Michelle Bae, Claire Edel, Omid Toloui, MBA, Stephanie M....
The adsorption and reaction of benzene $({\mathrm{C}}_{6}{\mathrm{H}}_{6})$ on the Si(001) surface are investigated by first-principles density-functional calculations within generalized gradient approximation. We find that ``tight-bridge'' configuration in which ${\mathrm{C}}_{6}{\mathrm{H}}_{6}$ bonds across two adjacent Si dimers is more stable than ``butterfly'' top a single dimer. Upon latter initially formed but converted to former one with an energy barrier 0.87 eV. As coverage...
A recent scanning tunneling microscope nanolithography technique can fabricate one-dimensional “dangling-bond (DB) wire” by the selective removal of H atoms from a H-passivated Si(001) surface along Si dimer row. We here theoretically investigate bonding geometry, band structure, and binding mechanism an armchair (3,3) single-walled carbon nanotube (CNT) adsorbed on DB wire. find that formation C–Si bonds between CNT wire gives rise to hybridization π-bond states dangling-bond states. This...
Using first-principles density-functional calculations we predict a self-directed growth of benzonitrile molecular line on H-terminated Si(001) surface. The C[triple bond]N bond reacts with single Si dangling which can be generated by the removal H atom, forming one Si-N and C radical. Subsequently, produced radical stabilized abstracting atom from neighboring dimer, creating another H-empty site. This H-abstraction process whose activation barrier is 0.65 eV sets off chain reaction to grow...
Surface metallization of Si(001) has been observed at high temperatures, but its explanation is controversial. Such a temperature-induced can be explained in terms symmetric-dimer model where symmetric dimers are alternately displaced up and down along the dimer rows. We find that this an electronlike Fermi surface around $\ensuremath{\Gamma}$ point hole pocket centered ${K}_{1∕2}$ point, good agreement with angle-resolved photoemission spectroscopy data. Since...
In article number 1803149, Yonggang Huang, Yihui Zhang, John A. Rogers, and co-workers present deterministic assembly processes for transforming conventional, planar devices based on flexible printed circuit board (FPCB) platforms into those with 3D architectures in a manner that is fully compatible off-the-shelf packaged or unpackaged component parts. The strategy to FPCB technologies creates immediate opportunities designs multifunctional systems leverage state-of-the-art components.
By using subliming materials, Bong Hoon Kim, John A. Rogers, and co-workers successfully design dry electronic systems that undergo timed self-destruction. As described in article number 1606008, sublimation causes mechanical fragmentation disintegration of the devices. The concept is promising for such diverse fields as biomedical implants, environmental monitoring, secure data systems.