Abstract: A photo resist layer is used to protect a dielectric layer and conductive elements embedded in the dielectric layer when patterning an etch stop layer underlying the dielectric layer. The photo resist layer may further be used to etch another dielectric layer underlying the etch stop layer, where etching the next dielectric layer exposes a contact, such as a gate contact. The bottom layer can be used to protect the conductive elements embedded in the dielectric layer from a wet etchant used to etch the etch stop layer.

Abstract: A ferroelectric memory device and a semiconductor die are provided. The ferroelectric memory device includes a gate electrode; a channel layer, overlapped with the gate electrode; source/drain contacts, in contact with separate ends of the channel layer; a ferroelectric layer, lying between the gate electrode and the channel layer; and a first insertion layer, extending in between the ferroelectric layer and the channel layer, and comprising a metal carbonitride or a metal nitride.

Abstract: An electrostatic sensing system configured to sense an electrostatic information of a fluid inside a fluid distribution component and including an electrostatic sensing assembly, a signal amplifier and an analog-to-digital converter. The electrostatic sensing assembly includes a sensing component, and a shield. The sensing component is configured to be disposed at the fluid distribution component. The sensing component is disposed through the fluid distribution component so as to be partially located in the fluid distribution component. The shield surrounds a part of the sensing component that is located in the fluid distribution component. At least part of the shield is located on an upstream side of the sensing component. The signal amplifier is electrically connected to the sensing component. The analog-to-digital converter is electrically connected to the signal amplifier. The shield has an opening spaced apart from the sensing component.

Abstract: A toy airplane includes a fuselage and a main wing fastened to the fuselage, the fuselage having a top clamping strip at a front side thereof, a vertical stabilizer at a rear side thereof, a plug strip spaced between the top clamping strip and the vertical stabilizer, a first retaining notch disposed between the top clamping strip and the plug strip, and a second retaining notch disposed between the plug strip and the vertical stabilizer, the main wing having two parallel front tips attached to the top clamping strip of the fuselage at two opposite sides, a first retaining notch longitudinally extended to a front side thereof and defined between the front tips and forced into engagement with the first retaining notch on the fuselage, a second retaining notch longitudinally extended to a rear side thereof and forced into engagement with the second retaining notch on the fuselage, and an elongated plug hole longitudinally disposed on the middle and engaged with the plug strip of the fuselage.