Micro-scale wireless heater and fabrication method and applications thereof

Patent metadata

Field	Value
Publication number	US-11098955-B2
Application number	US-201916256417-A
Country	US
Kind code	B2
Filing date	Jan 24, 2019
Priority date	Nov 21, 2018
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A micro-scale wireless heater includes: a support layer having first and second sides and a cavity formed on the second side; a first electrode plate and a first conduction line disposed on the second side; a second electrode plate and a coil both embedded into a slot on the first side, wherein the support layer is disposed between the first and second electrode plates forming a capacitor, the coil forms an inductor, and the slot communicates with the cavity; and a second conduction line disposed in the cavity. The first and second electrode plates are electrically connected together through the first and second conduction lines and the coil in order. Three exposed surfaces of the second electrode plate, the coil and the first side are flush with one another. The inductor and the capacitor convert an electromagnetic wave into heat. A fabrication method and applications thereof are also provided.

First claim

What is claimed is:

1. A micro-scale wireless heater, comprising:
a support layer having a first side, a second side opposite to the first side and a cavity formed on the second side;
a first electrode plate and a first conduction line disposed on the second side;
a second electrode plate and a coil both embedded into a slot on the first side, wherein the support layer is disposed between the second electrode plate and the first electrode plate, which form a capacitor, the coil forms an inductor, and the slot communicates with the cavity; and
a second conduction line disposed in the cavity, wherein the first electrode plate is electrically connected to the second electrode plate through the first conduction line, the second conduction line and the coil in order, three exposed surfaces of the second electrode plate, the coil and the first side of the support layer are flush with one another, and the inductor and the capacitor converts an electromagnetic wave into heat.

2. The micro-scale wireless heater according to claim 1 , wherein the support layer is made of a microcrystalline diamond material providing supporting, heat conducting and electrical insulating functions.

3. The micro-scale wireless heater according to claim 1 , wherein the second electrode plate and the coil are made of titanium.

4. The micro-scale wireless heater according to claim 1 , wherein the second electrode plate, the coil, the first electrode plate, the first conduction line and the second conduction line are made of titanium.

5. The micro-scale wireless heater according to claim 1 , wherein dimensions of the first electrode plate and the second electrode plate range between 100 microns*300 microns and 1000 microns*500 microns, a line width of the coil ranges between 1 micron and 10 microns, and a pitch of the coil ranges between 10 microns and 50 microns.

6. A biological stimulation system, comprising:
multiple micro-scale wireless heaters each according to claim 1 respectively disposed on multiple organisms, the micro-scale wireless heaters having different response frequencies; and
an electromagnetic wave generator generating multiple electromagnetic waves having frequencies respectively corresponding to the response frequencies to stimulate the organisms respectively and independently.

7. The biological stimulation system according to claim 6 , wherein each of the organisms is a drosophila.

8. A micro-scale origami system, comprising:
a sheet structure having multiple stimulation blocks;
multiple micro-scale wireless heaters each according to claim 1 respectively disposed on the stimulation blocks, the micro-scale wireless heaters having different response frequencies; and
an electromagnetic wave generator generating multiple electromagnetic waves having frequencies respectively corresponding to the response frequencies to stimulate the stimulation blocks respectively and independently so that the sheet structure deforms in a specific direction.

9. A fabrication method of a micro-scale wireless heater, comprising steps of:
forming a second metal layer on a semiconductor substrate;
patterning the second metal layer to form a second electrode plate and a coil;
forming a support layer on and between the second electrode plate and the coil, so that the second electrode plate and the coil are embedded into a slot disposed on a first side of the support layer;
forming a cavity on the support layer to expose a portion of the coil;
forming a first metal layer in the cavity and on the support layer;
patterning the first metal layer to form a first electrode plate and a first conduction line on a second side of the support layer, and forming a second conduction line in the cavity; and
removing the semiconductor substrate to form the micro-scale wireless heater.

10. The fabrication method according to claim 9 , wherein the first metal layer in the cavity forms the second conduction line, the support layer is disposed between the second electrode plate and the first electrode plate, which form a capacitor, the coil forms an inductor, the slot communicates with the cavity, the first electrode plate is electrically connected to the second electrode plate through the first conduction line, the second conduction line and the coil in order, three exposed surfaces of the second electrode plate, the coil and the first side of the support layer are flush with one another, and the inductor and the capacitor convert an electromagnetic wave into heat.

Assignees

• Univ Nat Tsing Hua

Inventors

• Tsai Hung-Yin
• Lee Tung Che
• Tsai Ping Huan
• Wu shang ru
• Chen Yi Hung

Classifications

• A61N1/403

  for thermotherapy, e.g. hyperthermia · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H05B3/03 Primary

  Electrodes · CPC title

• H01F17/0006 Primary

  Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K) · CPC title

• H05B3/02

  Details · CPC title