Thermally conductive ultra-low-k dielectric layers based on two-dimensional covalent organic frameworks

Current Status of Research on the Modification of Thermal Properties of Epoxy Resin-Based Syntactic Foam Insulation Materials

“…Considering the influence of the microstructure on the overall thermal conductivity of composites, a specially designed heat conduction path is constructed during the processing to reduce transmission resistance of phonons to obtain high thermal conductivity in a certain direction [ 46 , 47 , 48 , 49 ]. As shown in Figure 8 , Xu et al [ 50 ] constructed a 3D BN foam to achieve good thermal conductivity and insulation simultaneously.…”

“…However, in practical applications, this type of filler is expensive and generally added only in a small amount, that is, it is added as an auxiliary filler together with other fillers to improve the thermal conductivity and insulation performance of composites. Considering the influence of the microstructure on the overall thermal conductivity of composites, a specially designed heat conduction path is constructed during the processing to reduce transmission resistance of phonons to obtain high thermal conductivity in a certain direction [46][47][48][49]. As shown in Figure 8, Xu et al [50] constructed a 3D BN foam to achieve good thermal conductivity and insulation simultaneously.…”

“…Chen et al [51] mixed BN with a salt template at first to dissolve polyvinylidene fluoride (PVDF) as a binder in acetone to prevent the precipitation of BN (Figure 11). Then, they used acetone to evaporate and remove salt Considering the influence of the microstructure on the overall thermal conductivity of composites, a specially designed heat conduction path is constructed during the processing to reduce transmission resistance of phonons to obtain high thermal conductivity in a certain direction [46][47][48][49]. As shown in Figure 8, Xu et al [50] constructed a 3D BN foam to achieve good thermal conductivity and insulation simultaneously.…”

Towards High‐Performance Resistive Switching Behavior through Embedding a D‐A System into 2D Imine‐Linked Covalent Organic Frameworks

“…Covalent organic frameworks (COFs) have emerged as a new class of 2D crystalline porous materials with unique designability with respect to topology diagram, pore environments, chemical structure and functionalities. COFs have been investigated into multifarious applications of gas adsorption and separation, [29–32] energy storage, [33–36] chemical sensors, [37–39] proton or ion conduction, [40–43] catalysis, [44–48] and some promising semiconductor devices [49–52] . Unfortunately, the research on nonvolatile resistive switching memory devices based on 2D COFs is still in its infancy.…”

Towards High‐Performance Resistive Switching Behavior through Embedding a D‐A System into 2D Imine‐Linked Covalent Organic Frameworks

“…Covalent organic frameworks (COFs) have emerged as an ew class of 2D crystalline porous materials with unique designability with respect to topology diagram, pore environments,c hemical structure and functionalities.C OFs have been investigated into multifarious applications of gas adsorption and separation, [29][30][31][32] energy storage, [33][34][35][36] chemical sensors, [37][38][39] proton or ion conduction, [40][41][42][43] catalysis, [44][45][46][47][48] and some promising semiconductor devices. [49][50][51][52] Unfortunately, the research on nonvolatile resistive switching memory devices based on 2D COFs is still in its infancy. There are several main reasons we speculated as the following: 1) Above all, it remains ag reat challenge to shape nanocrystalline COFs into thin films with large scale and tunable electronic properties owing to their insolubility and nonprocessability;2 )COF thin-film synthetic methodologies for memory devices are imperfect in terms of scale,t hickness, roughness,l ayer orientation, and crystallinity;3 )more strikingly,t he relationship of memristor performance to the chemical structure of COFs is not yet clear.…”