A5066783466- Manufacturing Process and Optimization
- Electronic Packaging and Soldering Technologies
- Thermal properties of materials
- Additive Manufacturing and 3D Printing Technologies
- Advanced Sensor and Energy Harvesting Materials
- 3D Shape Modeling and Analysis
- Graphene research and applications
- Nanomaterials and Printing Technologies
- 3D IC and TSV technologies
- Carbon Nanotubes in Composites
- Acute Ischemic Stroke Management
- Traumatic Brain Injury and Neurovascular Disturbances
- Mechanical Behavior of Composites
- Nanofabrication and Lithography Techniques
- Computer Graphics and Visualization Techniques
- Supercapacitor Materials and Fabrication
- Advanced Numerical Analysis Techniques
- Advanced Surface Polishing Techniques
- Advanced MRI Techniques and Applications
- Material Properties and Processing
- Injection Molding Process and Properties
- Advanced Vision and Imaging
- Surface Modification and Superhydrophobicity
- RFID technology advancements
- Cerebrovascular and Carotid Artery Diseases
Yale University
2020-2025
Hong Kong University of Science and Technology
2011-2022
University of Hong Kong
2011-2022
Dartmouth College
2019
Wuyi University
2019
Materials Science & Engineering
2017
Georgia Institute of Technology
2011
A scalable preparation method for high-quality silver nanowires (Ag NWs), which can be used as the electrical circuits a broad spectrum of ultralow-cost, recyclable, foldable electronics, is presented. Paper-based radio-frequency identification (RFID) tags, light-emitting diode (LED) chip arrays, and 3D origami devices are synthesized. The signal transmittance biodecomposition RFID tags investigated.
Luminogenic molecules [(TPE)3 (1), TPE-C = C-TPE-C C-TPE (2), and TPE-C≡C-TPE-C≡C-TPE (3)] their polymers P1–P3 are constructed from tetraphenylethene (TPE) building blocks in high yields by Suzuki, Witting, Sonogashira coupling reactions. All the compounds soluble enjoy thermal stability, losing little of weights when they heated to 290–528 °C under nitrogen or 288–436 air. Analyses UV spectroscopy cyclic voltammetry as well theoretical calculations show that conjugation luminophores is...
Neuroimaging is a key step in the clinical evaluation of brain injury. Conventional magnetic resonance imaging (MRI) systems operate at high-strength fields (1.5-3 T) that require strict, access-controlled environments. Limited access to timely neuroimaging remains structural barrier effectively monitor occurrence and progression neurological injury intensive care settings. Recent advances low-field MRI technology have allowed for acquisition clinically meaningful outside radiology suites...
Abstract Radiological examination of the brain is a critical determinant stroke care pathways. Accessible neuroimaging essential to detect presence intracerebral hemorrhage (ICH). Conventional magnetic resonance imaging (MRI) operates at high field strength (1.5–3 T), which requires an access-controlled environment, rendering MRI often inaccessible. We demonstrate use low-field (0.064 T) for ICH evaluation. Patients were imaged using conventional (non-contrast computerized tomography (CT) or...
Brain imaging is essential to the clinical management of patients with ischemic stroke. Timely and accessible neuroimaging, however, can be limited in stroke pathways. Here, portable magnetic resonance (pMRI) acquired at very low field strength (0.064 T) used obtain actionable bedside neuroimaging for 50 confirmed Low-field pMRI detected infarcts 45 (90%) across cortical, subcortical, cerebellar structures. Lesions as small 4 mm were captured. Infarcts appeared hyperintense regions on...
Aligned carbon nanotube (CNT) arrays were fabricated from a multilayer catalyst configuration by microwave plasma-enhanced chemical vapor deposition (PECVD). The effects of the thickness and annealing aluminum layer on CNT synthesis thermal performance investigated. An experimental study resistance across array interface using modified ASTM D5470 standard was conducted. It demonstrated that CNT-thermal material (CNT-TIM) reduced interfacial significantly compared with state-of-art commercial...
Tetraphenylethene-containing diyne (1), named 1,2-bis(4-ethynylphenyl)-1,2-diphenylethene, was synthesized and polymerized by TaBr5 catalyst, affording the hyperbranched polymer hb-P1 with a high molecular weight (Mw up to 157 800) in nearly quantitative yield. The cyclotrimerization of 1-(4-ethynylphenyl)-1,2,2-triphenylethene also carried out give 1,3,5- 1,2,4-tris[4-(1,2,2-triphenylvinyl)phenyl]benzene (1,3,5-2 1,2,4-2) that served as model compounds for structural characterization...
Abstract The ventrolateral pallial (VLp) excitatory neurons in the claustro-amygdalar complex and piriform cortex (PIR; which forms part of palaeocortex) form reciprocal connections with prefrontal (PFC), integrating cognitive sensory information that results adaptive behaviours 1–5 . Early-life disruptions these circuits are linked to neuropsychiatric disorders 4–8 , highlighting importance understanding their development. Here we reveal transcription factors SOX4, SOX11 TFAP2D have a...
A facile one-step solution-phase chemical reduction method has been developed to synthesize Ag microsheets at room temperature. The morphology of sheets is a regular hexagon more than 1 μm in size and about 200 nm thickness. hexagonal possess smoother straighter surface compared with that the commercial micrometer-sized flakes prepared by ball milling for electrically conductive adhesives (ECAs). function reagents formation mechanism are also investigated. For polyvinylpyrrolidone (PVP)...
Abstract Neuroimaging is crucial for assessing mass effect in brain-injured patients. Transport to an imaging suite, however, challenging critically ill We evaluated the use of a low magnetic field, portable MRI (pMRI) midline shift (MLS). In this observational study, 0.064 T pMRI exams were performed on stroke patients admitted neuroscience intensive care unit at Yale New Haven Hospital. Dichotomous (present or absent) and continuous MLS measurements obtained locally available accessible...
Neuroimaging is a critical component of triage and treatment for patients who present with neuropathology. Magnetic resonance imaging non-contrast computed tomography are the gold standard diagnosis prognostication acute brain injuries. However, these modalities require intra-hospital transport to strict, access-controlled environments, which puts critically ill at risk complications secondary A novel, portable MRI (pMRI) device that can be deployed patient's bedside provides needed...
Abstract Conductive polymer composites were prepared by sintering a mixture of ultrahigh molecular weight polyethylene (UHMWPE) powder and carbon black. Two processing parameters—time temperature—were shown to have notable effect on the resistivity composites. The relationships between parameters morphology studied using optical microscopy transmission electron (TEM). results studies indicate that black is distributed in interfacial regions UHMWPE particles. dimension channels increases with...
Abstract Large-area freestanding graphene films are facilely fabricated by reducing oxide on recyclable Cu foils in H 2 -containing atmosphere at high temperature. might act as efficient catalysts for considerably improved reduction of according to the SEM, EDS, XRD, XPS, Raman and TGA results. Comparing with ~30 μm thickness reduced without substrate 900 °C, thermal conductivity electrical enhanced about 140% 902 Wm −1 K 3.6 × 10 4 S/m, respectively. Moreover, demonstrate superior ~1219...
A facile approach for the synthesis of hyperbranched polyacrylates is developed. Tetraphenylethene-containing di- and tetra-acrylates are synthesized by esterification bis(4-hydroxylphenyl)diphenylethene tetrakis(4-hydroxylphenyl)ethene with acryloyl chloride polymerized using azobisisobutyronitrile in refluxing THF, furnishing high molecular weight (Mw up to 87 100) glycogen-like structures closed-loops nearly quantitative yields (isolation yield 99%). All polymers soluble common organic...
High quality vertically aligned carbon nanotube (VACNT) arrays have been synthesized on bulk Al alloy (Al6063) substrates with an electron-beam (E-beam) evaporated Fe catalyst using low pressure chemical vapor deposition (LPCVD). The pretreatment process of the was shown to play a critical role. This studied comprehensively and optimized repeatedly grow high VACNT within wide range thicknesses layer (2–11 nm) acetylene (C2H2) flow rates (100–300 sccm). thermal performance resulting...
The effects of several important parameters, including processing conditions, package geometry and materials, are specifically studied on the occurrence warpage coplanarity for a plastic package. Special emphasis is placed evaluation moulding compound properties optimal conditions that can effectively minimize warpage. It found compounds requiring low temperature having coefficient thermal expansion (CTE) significantly reduce elastic modulus was to be inversely proportional warpage,...
The high growth temperature of carbon nanotubes (CNTs) hinders their direct assembly on temperature-sensitive substrates. We present a method to transfer an aligned CNT film at room overcome this problem. Using 'liftoff' technique with hydrofluoric acid solution, we separate the from silicon substrate. lifted-off is suspended in water, remaining intact and due crowding effect. then various substrates that are sensitive temperature. To illustrate quality transferred film, demonstrate thermal...