Other

Tsinghua University

National Science Council

Hong Hocheng

Hung-Yin Tsai

Yu-Ching Lin

Li-An Chu

Chin Chung Nien

Rong-Shun Chen

Chien-Hung Lin

Chung-chen Tsao

Yu-Cheng Wu

Yen Chu Chen

Yun-Liang Huang

Jhih-Shun Yang

The present invention provides a drilling apparatus and a method thereof capable of providing an adjustable active backup force to a composite workpiece to effectively reduce the delamination of the workpiece during drilling such that the application of the active backup force in terms of its force magnitude and its application location on the workpiece can adjustably counter the drill thrust force to retard the onset of delamination growth and reduce delamination damage at the drill exit in the workpiece, in particular in situation where large feed rate with short cycle time is desired for drilling of composite materials. A critical drill thrust force of the drilling apparatus and the method of the present invention is advantageously obtained in relation to said active backup force and the application of the active backup force to reduce the crack propagation of the delamination occurred in the composite workpiece.

Apparatus and method for delamination reduction of composite materials

A detecting platform for holding a tiny insect includes a main body forming a containing space, which passes through the main body and is surrounded by side walls of the main body. A first side wall and a second side wall of the side walls are opposite to each other, and the area of the second side wall is smaller than that of the first side wall. The main body forms a first opening and a second opening passing through the first side wall and the second side wall respectively for the tiny insects entering and leaving the containing space. A bottom plate covers a first through surface of the containing space to form a bottom surface and a detecting area is configured thereon to holding the tiny insects. Accordingly, the tiny insects can stay on the detecting area so as to detect the characteristics of the tiny insects expediently.

Detecting platform for holding a tiny insect

An image method for classifying insects includes the following steps: obtaining detecting images of the insects in a detecting area; obtaining a first foreground image related to the insects by background subtraction; extracting the saturation from the first foreground image and eliminating the non-characteristic objects therein to obtain a second foreground image; extracting the characteristics related to the insects from the second foreground image according to a threshold; and, determining the classifications or the sexes of the insects according to the characteristics. Accordingly, the image method for classifying insects can be used for automatically classifying the insects so as to save the manpower and time.

Image method for classifying insects and classifying process for insects

A system for nano-imprint with mold deformation detector is disclosed for real-time monitoring of the deformation of the mold. An electrostatic plate capacitor is embedded in the mold, serving as the deformation detector. The capacitor includes two opposite metal film electrodes formed by silicon micromachining technique on opposite surfaces of the mold and connected by a metal lead. During imprinting, the mold is acted upon by an external force and deformation occurs, which induces change of distance between the metal film electrodes and thus variation of the capacitance of the capacitor. The amount of deformation of the mold can then be assessed by comparing the capacitance with a reference. Thus, real-time detection and monitoring of the deformation of the nano-imprint mold is realized. Also disclosed is a method for carrying out the real-time monitoring of the deformation of the mold.

Nano-imprint system with mold deformation detector and method of monitoring the same

The present invention provides a method for in-situ real-time monitoring of mold deformation by using a database to store temporary information during the following steps: (a) providing a mark on the mold body that is easy to observe in order to monitor the mold deformation, (b) installing a signal source and a monitor device for monitoring the deformation quantity on the mold, (c) transforming the above deformation quantity into computer signals for storing in the database and (d) issuing controlling or warning signals to the imprinting machine based on the processing results of the stored information in the database.

In-situ monitoring method and system for mold deformation in nanoimprint

A method for detecting the endpoint of a chemical mechanical polishing (CMP) process uses the slope variation of temperature difference of polishing pad. The method combines temperature measurement at polishing pad and atmosphere, and numerical analysis to figure out the curve of temperature difference variation versus polishing time. The endpoint of CMP is determined by the change of the slope of the curve. The method allows endpoint to be detected in-situ at the polishing apparatus, without stopping polishing process.

Method for detecting the endpoint of a chemical mechanical polishing (CMP) process

The present invention relates to a method of electropolishing aided by ultrasonic means having the capability of rapidly discharging dregs. More specifically, the invention relates to a method of electrochemical polishing process aided by an auxiliary ultrasonic cleaning device which emits ultrasonic vibrating energy to effectively discharge dregs, shorten the polishing cycle time for each workpiece, and improve the surface roughness of the workpiece. The present invention further provides an electropolishing apparatus that can be easily retrofitted to almost every existing machine tool as an auxiliary unit. Alternately, the ultrasonic apparatus can be installed separately as an independent ultrasonic generating unit. Metal workpieces are then immersed in an electrolyte solution excited by high-frequency ultrasonic energy in order to have the dregs and other electropolishing byproducts rapidly discharged and removed from working area, so surface roughness of processed workpieces can be rapidly improved with a simple, low-cost ultrasonic apparatus.

Growing community of inventors

Hsinchu, Taiwan

Hong Hocheng