C. Hruanun

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Three different types of surface, silicon dioxide (SiO2), silicon nitride (Si3N4), and titanium oxynitride (TiON) were modified for lactate dehydrogenase (LDH) immobilization using (3-aminopropyl)triethoxysilane (APTES) to obtain an amino layer on each surface. The APTES modified surfaces can directly react with LDH via physical attachment. LDH can be(More)
This innovative pH-ISFET sensor used nanocrystalline-AlN thin film as ion-sensitive membrane which prepared by reactive gas-timing r.f. magnetron sputtering without heating substrate and post annealing. The technique of gas-timing r.f. magnetron sputtering purposed by us, the feeding gas is on-off controlled periodically in such a way that the deposited(More)
This paper presents the characteristics of silicon thin film thermistors. The polycrystalline silicon and amorphous silicon films were deposited by low pressure chemical vapor deposition (LPCVD) to serve as thermistors. We have studied the effects of temperature on thermistor with various boron implantation doses from 1.0times10<sup>16</sup> to(More)
Many photolithography and etching steps for a fabrication of an Air Bearing Surface (ABS) structure which is responsible for the aerodynamic behavior of a read/write head make a significant impact to HDDs overall cost. To reduce a cost/time consuming, the ABS can be fabricated by a technique called &#x201C;multi-level exposure&#x201D;. This technique(More)
This paper presents improve sensitivity of pnp-magnetotransistor for detect vertical magnetic field response. The device structure consisted of one emitter, four collectors and four bases. The four collectors are separate to form four terminals. The same is true for the four bases. The experiment showed that, at 2 and 4mA of biasing current, magnetic field(More)
Nowadays, eyepiece lenses in optical microscope have microscales so-called reticles or eyepiece lens scale. They are located at the focal plane inside the eyepiece lens of the microscope and allow an inspector to make accurate measurements of specimens. The scale of micrometer on eyepiece lens can be produced by using photolithography process. In this(More)
Superhydrophobic surface can be fabricated by creating a rough surface at very fine scale and modify it with low-surface energy material. To obtain the optimum superhydrophobicity, the surface roughness must be maximized. To avoid the limitation of scaling down the pattern size by using an expensive lithography tools, the surface roughness factor (r) was(More)