CN215866024U

CN215866024U - Fiber transverse cross section auxiliary analyzer

Info

Publication number: CN215866024U
Application number: CN202121893961.1U
Authority: CN
Inventors: 刘丹妙; 梁小荣; 蒙国慧; 李德哲; 陈金转
Original assignee: Xinlong Holdings Group Co ltd; Hainan Xinlong Nonwovens Co ltd
Current assignee: Xinlong Holdings Group Co ltd; Hainan Xinlong Nonwovens Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-02-18
Anticipated expiration: 2031-08-13

Abstract

A fiber transverse section auxiliary analyzer comprises a fixed substrate and a fastening substrate; wherein, one side of the fixed substrate is concavely provided with a fixed groove which vertically penetrates through the upper side and the lower side of the fixed substrate towards the middle part of the fixed substrate, a first clamping tooth part is formed at the end part of the fixed groove, the fixed groove forms a notch on the side, and the sides at the two sides of the notch are concavely provided with two inserting grooves; the side surface of the fastening substrate is convexly provided with a fixed convex tongue and two inserting parts, and the end part of the fixed convex tongue forms a second clamping tooth part; the fiber sample is vertically placed in the end part of the fixing groove, the fixing convex tongue and the inserting part are inserted in the fixing groove and the inserting groove so as to clamp the fiber sample between the first clamping tooth part and the second clamping tooth part, and the fiber transverse section auxiliary analyzer is placed at the observation equipment after transversely cutting the fiber sample along the upper side and the lower side of the fixing substrate by using a cutting knife so as to perform identification analysis on the transverse section of the fiber sample. Therefore, the method is simple to operate, and the fiber section is more vertical to the longitudinal direction of the fiber, so that the analysis efficiency and accuracy are improved.

Description

Fiber transverse cross section auxiliary analyzer

Technical Field

The utility model relates to a fiber analysis device, in particular to a fiber transverse section auxiliary analyzer.

Background

In the textile industry, it is often desirable to perform a differential analysis of the fibers in a fibrous feedstock or product. Wherein, the fiber raw material can be effectively identified by detecting the cross section of the fiber. At present, fibers are generally sliced in the industry, and then the fiber slices are placed on a stage of a microscope or a scanning electron microscope and other equipment, and are observed with magnification at a certain magnification to obtain the cross section shape of the fibers. For example, patent document FZ/T01057.3 discloses a haugh slicer and a method of using the same, wherein the haugh slicer is composed of a metal plate tongue, a metal plate groove, a scale screw, a fastening screw, a positioning pin and a screw seat. In addition, as shown in fig. 1, the haar slicer provided in patent document No. 201520738437.5 is composed of a bottom plate 1, a clip 2, a knife slot 3, a thickness measuring device 4, a spring knife 5, and a frame 6. The whole machine consists of a front section and a rear section, the bottom is a bottom plate 1, the bottom plate 1 is a rectangular structural metal plate consisting of a front section bottom plate and a rear section bottom plate, the whole thickness of the bottom plate 1 is uniform, a clamping piece 2 is arranged on a front section bottom plate, the clamping piece 2 consists of two metal sheets, the two metal sheets are respectively arranged on the upper surface part and the lower surface part of the bottom plate, a double-sided knife is arranged in the middle of the clamping piece 2, and the thickness of the double-sided knife corresponds to the width of the knife groove 3; the rear section bottom plate is provided with a rack 6 and a cutter groove 3, the cutter groove 3 is a line slot, and the front section of the cutter groove 3 is provided with a V-shaped opening; the machine frame 6 is in a horizontal A shape, a spring tool bit 5 is arranged in an opening of the horizontal A shape, the spring tool bit 5 and the tail of the tool groove 3 form a vertical structure, a thickness measuring device 4 is arranged on the upper surface of the opening of the horizontal A shape, the lower part of the thickness measuring device 4 is connected with the spring tool bit 5, and the thickness of the spring tool bit 5 slice is accurately controlled by adjusting the thickness measuring device 4 on the machine frame 6. However, when the haar slicer is operated, the convex tongue and the concave groove of the metal plate of the extruding slicer are held by hands to squeeze the fiber sample between the convex tongue and the concave groove of the metal plate, then the fastening screw is installed, the screw needs to be slightly screwed after the screw is screwed so as to push a little of the fiber sample out of the slicer, then a thin layer of collodion glue is coated on the fiber sample exposed out of the slicer, after the glue is dried, the blade is held by the other hand, and the blade edge of the blade needs to be tightly attached to the surface of the slicer to cut the thin section layer of the fiber sample bonded with the collodion glue together with the surface of the slicer. However, the slicer still has some disadvantages when in use: 1. the process of manufacturing the fiber slice is complicated, reagents such as collodion liquid and the like are needed, the operation time for manufacturing the fiber slice is long, and the application of the reagents can influence the manufacturing effect of the fiber slice and the accuracy of subsequent analysis and identification, as shown in fig. 2, an observation diagram of a transverse section slice of a viscose fiber sample manufactured by a Ha-type slicer under observation equipment is provided, wherein L1, L2 and L3 are the diameters of observed viscose fibers, and as the viscose fibers have certain viscosity, the subsequent observation and analysis can generate larger images by applying the reagents and the like, and as can be seen in the diagram, part of the fibers are bonded together, and the section outline of the fibers is difficult to identify; 2. spring device among the slicer is difficult to control, cause the thickness of accurate control fibre section, and easily make the fibre take place the displacement, influence the observation and the analysis to its cross section, make great error easily appear when analysis product raw materials ratio, as shown in figure 3, for utilizing the observation drawing of the horizontal cross-section of dacron fibre sample of haake formula slicer preparation under observation equipment, wherein L1, L2, L3 are the diameter of the fibre of observing, it is visible in the figure, the phenomenon of falling to one side appears in some fibre, influence observation and analysis effect to whole fibre sample. In addition, when making fiber cross-section slices, the thickness requirement is usually lower than or close to the diameter of the fiber, so as to ensure that the fiber is in an upright state for observation and analysis, but for fibers with small diameter, such as fibers below 5 microns, slicing and cutting the fiber by using the slicer is difficult, the sample extraction failure rate is high, and the identification and analysis efficiency is low and the accuracy is poor.

Therefore, it is one of the technical problems to be solved in the art to provide an analyzing apparatus that is simple to operate and can make the transverse cross section of the fiber perpendicular to the longitudinal direction of the fiber to improve the efficiency and accuracy of analyzing the fiber.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the technical scheme is how to provide an analysis device which does not need to carry out reagent treatment on a fiber sample and manufacture a very thin fiber transverse section slice, only needs to place the fiber sample in an analysis device for cutting, can be placed on an observation device for analysis and identification, and can ensure that the cut fiber sample is in an upright state, thereby improving the analysis efficiency and the accuracy of the fiber sample.

In order to solve the above technical problem, the present technical solution provides a fiber transverse section auxiliary analyzer for fixing a fiber sample, cutting the transverse section, and performing an identification analysis on the fiber sample by cooperating with an observation device, including: a fixed substrate and a fastening substrate; the side surfaces at two sides of the notch are respectively concavely arranged towards the middle part of the fixed substrate to form two inserting grooves between the upper side surface and the lower side surface of the fixed substrate, and the two inserting grooves are respectively formed on the side surfaces to form inserting openings; the side surface of the fastening substrate facing the notch corresponds to the fixing groove and the two inserting grooves and is convexly provided with a fixing convex tongue and two inserting parts, and the end part of the fixing convex tongue corresponds to the first clamping tooth part to form a second clamping tooth part; the fiber sample is placed in the end part of the fixing groove with the axial direction thereof parallel to the penetrating direction of the fixing groove, the fixing convex tongue and the inserting part are correspondingly inserted into the fixing groove and the inserting groove, so that the fiber sample is fixedly clamped between the first clamping tooth part and the second clamping tooth part, then the fiber sample is transversely cut along the upper side and the lower side of the fixing substrate by a cutting knife, and then the fiber transverse section auxiliary analyzer with the cut fiber sample clamped therein is placed at an observation device to perform identification analysis on the transverse section of the fiber sample. Therefore, when the fiber transverse section auxiliary analyzer of the technical scheme is applied to assist in analyzing a fiber sample, reagents such as collodion liquid do not need to be used, the fiber sample does not need to be cut into a thin fiber transverse section slice, the fiber sample only needs to be longitudinally clamped between the first clamping tooth part and the second clamping tooth part of the fixed substrate and the fastening substrate, and the part of the fiber sample exposed out of the fiber transverse section auxiliary analyzer is removed through cutting, so that the fiber transverse section auxiliary analyzer with the clamped and cut fiber sample can be placed at an observation device to perform identification analysis on the transverse section of the fiber sample, and the fiber sample clamped and fastened by the first clamping tooth part and the second clamping tooth part can be kept in an upright state all the time, so that the observation and identification of the transverse section of the fiber sample are facilitated. Therefore, the fiber transverse section auxiliary analyzer is used for carrying out auxiliary analysis on the fiber sample, the operation is simple, repeated sampling is convenient, the fiber sample cannot be displaced and not inclined when being cut off, and the transverse section of the fiber can be ensured to be vertical to the fiber longitudinally, so that the sampling time of the fiber transverse section is greatly shortened, and the analysis efficiency and the accuracy of the fiber transverse section are improved.

In another embodiment of the present invention, the end surfaces of the first and second latch portions are formed by connecting two vertical flat surfaces at upper and lower portions thereof and two zigzag surfaces at middle portions thereof, wherein the two zigzag surfaces are formed by mutually crossing a tooth crest and a tooth valley from top to bottom, and the tooth crest and the tooth valley of the first latch portion correspond to the tooth valley and the tooth crest of the second latch portion, respectively. Therefore, the vertical fiber sample can be clamped and fixed, the upper part and the lower part of the fiber sample are vertical, the transverse section of the fiber sample is not deformed, and the middle part of the fiber sample is stably fixed and tightened by the staggered tooth peaks and the staggered tooth valleys so as to prevent displacement during cutting.

As another implementation of the technical scheme, the fixing groove and the two inserting grooves are communicated with each other; the two insertion parts are positioned on the two sides of the fixed convex tongue and are connected with the fixed convex tongue. In this way, the structure in which the insert is coupled with the fixing tab can significantly enhance the structural strength of the fixing tab, thereby enhancing the durability and extending the service life of the fiber transverse cross-section auxiliary analyzer.

As another implementation of the technical scheme, the fixing substrate and the fastening substrate are both rectangular bodies made of metal materials; the transverse cross-sectional shapes of the fixing groove, the inserting groove, the fixing convex tongue and the inserting part are all rectangular. Therefore, the regular outline shape is more beneficial to the assembly of the fixed substrate and the fastening substrate, and the clamping, cutting, observing and analyzing of the fiber sample.

As another implementation of the technical scheme, the thickness of the fixed substrate and the thickness of the fastening substrate are both 0.8-1.5 mm. Therefore, the whole thickness of the fiber transverse section auxiliary analyzer can be thinner, and the light transmittance of the clamped position of the fiber sample is better, so that the fiber transverse section auxiliary analyzer can be placed under observation equipment to clearly observe the transverse section shape of the fiber sample.

In another embodiment of the present invention, the fixing substrate and the fastening substrate are inserted and combined to have an overall length of 6cm and an overall width of 3 cm. Therefore, the operation area of the fiber transverse section auxiliary analyzer is moderate, so that the transverse section shapes of more fibers can be analyzed, and the fiber raw material ratio of the blended product can be analyzed more accurately.

As another implementation of the technical scheme, the width of the fixing groove and the fixing convex tongue is 0.5-1.5 mm. Therefore, the fiber sample with various diameters and different numbers can be fixedly clamped, so that subsequent cutting, observation and analysis are facilitated.

In another embodiment of the present invention, a distance between an end surface of the first latch portion and an end surface of the second latch portion is 0.5 to 2 mm. Therefore, the fiber sample with various diameters and different numbers of fiber samples can be fixedly clamped, so that subsequent cutting, observation and analysis are facilitated.

In another embodiment of the present disclosure, the thickness of the fixing substrate and the thickness of the fastening substrate are both 1mm, the width of the fixing groove and the width of the fixing protruding tongue are both 1.2mm, and the distance between the end surface of the first tooth portion and the end surface of the second tooth portion is 1.5 mm. Thereby forming the most optimized structure of the fiber transverse section auxiliary analyzer.

In another embodiment of the present invention, the observation device is a microscope or a scanning electron microscope, and the fiber transverse cross-section auxiliary analyzer holding the cut fiber sample is placed on a stage of the microscope or the scanning electron microscope.

Drawings

FIG. 1 is a schematic diagram of the mechanism of a novel Ha-type slicer in the prior art;

FIG. 2 is an observation view of a transverse cross-sectional slice of a viscose fiber sample made by a Ha-slicer under observation equipment;

FIG. 3 is an observation view of a transverse section slice of a polyester fiber sample manufactured by a Ha-type slicer under observation equipment;

FIG. 4 is a schematic view of a fiber transverse cross-section auxiliary analyzer of the present invention;

FIG. 5 is a schematic view of a first latch portion and a second latch portion of the present invention;

FIG. 6 is a perspective view of a viscose fiber sample produced using a fiber transverse cross-section assisted analyzer under viewing equipment;

FIG. 7 is a view of a polyester fiber sample made using a fiber transverse cross-section auxiliary analyzer under a viewing device.

Symbolic illustration in the drawings:

symbol labeling in the prior art:

1, a bottom plate; 2, clamping pieces; 3 cutter grooves; 4 a thickness measuring device; 5, a spring tool bit; 6, a frame;

the utility model has the following symbols:

7, fixing grooves; 71 a first latch part; 711 plane; 712 serrated face; 72 notches; 73 inserting into the groove; 8 fixing the convex tongues; 81 second clamping tooth parts; 811 plane; 812 a serrated surface; 82 an inserting part; 9 fixing the substrate; 10 secure the substrate.

Detailed Description

The following detailed description and technical contents of the present invention are described with reference to the drawings, which are provided for reference and illustration purposes only and are not intended to limit the present invention.

Fig. 4 shows an embodiment of the fiber transverse cross-section auxiliary analyzer of the present invention. The fiber transverse section auxiliary analyzer (hereinafter referred to as an auxiliary analyzer) is used for fixing a fiber sample, cutting a transverse section, and performing identification analysis on the fiber sample by matching with an observation device (not shown), wherein the observation device can be a microscope or a scanning electron microscope, but can also be other observation devices. As shown in the figure, the auxiliary analyzer includes a fixing substrate 9 and a fastening substrate 10, wherein one side of the fixing substrate 9 is recessed towards the middle of the fixing substrate 9 to form a fixing groove 7 vertically penetrating through the upper and lower sides of the fixing substrate 9, and the end of the fixing groove 7 located in the middle of the fixing substrate 9 is formed with a first serration part 71 having teeth peaks and teeth valleys staggered from top to bottom, the fixing groove 7 forms an open notch 72 on the side, the sides of the two sides of the notch 72 are recessed towards the middle of the fixing substrate 9 to form two insertion grooves 73 located between the upper and lower sides of the fixing substrate 9, and the two insertion grooves 73 form insertion openings (not shown) on the sides. The fastening base plate 10 has a fixing tongue 8 and two insertion portions 82 protruding toward the side of the notch 72 corresponding to the fixing groove 7 and the two insertion grooves 73, and the end of the fixing tongue 8 corresponds to the first engaging portion 71 to form a second engaging portion 81. When sampling and analyzing a fiber sample (not shown), firstly, the fiber sample is placed in the end part of the fixing groove 7 with the axial direction thereof being parallel to the penetrating direction of the fixing groove 7, and the fixing convex tongue 8 and the inserting part 82 are correspondingly inserted in the fixing groove 7 and the inserting groove 73, so that the fiber sample is clamped between the first clamping tooth part 71 and the second clamping tooth part 81; then transversely cutting the fiber sample along the upper and lower sides of the fixed base plate 9 by cutters (not shown, and the cutters may be general blades for cutting fibers) to cut off the portion of the fiber sample exposed to the outside of the auxiliary analyzer and to expose the transverse section thereof; and then placing the fiber transverse section auxiliary analyzer with the cut fiber sample on a stage of a microscope or a scanning electron microscope to perform identification analysis on the transverse section of the fiber sample. The fiber sample referred to in the present invention is generally a bundle of fibers composed of several fibers of the same kind.

More specifically, as shown in fig. 5, the end surface of the first tooth locking portion 71 and the end surface of the second tooth locking portion 81 are respectively formed by connecting

vertical planes

711 and 811 at the upper and lower portions and

sawtooth surfaces

712 and 812 formed by staggering the tooth peaks and the tooth valleys at the middle portions from top to bottom, and the tooth peaks and the tooth valleys of the first tooth locking portion 71 respectively correspond to the tooth valleys and the tooth peaks of the second tooth locking portion 81, so that the upper and lower portions of the fiber sample clamped and fixed therein are upright and the transverse cross section thereof is not deformed, and the middle portion of the fiber sample is stably clamped and fixed by the tooth peaks and the tooth valleys staggered at both sides (the first tooth locking portion and the second tooth locking portion) to prevent the fiber sample from being displaced or inclined when being cut.

In this embodiment, as shown in fig. 4, the fixing groove 9 and the two insertion grooves 73 can be communicated with each other, and correspondingly, the two insertion portions 82 are located at both sides of the fixing tongue 8 and connected with the fixing tongue 8. The structure of the interposition part 82 coupled with the fixing tongue 8 can significantly enhance the structural strength of the fixing tongue 8, thereby enhancing the durability of the auxiliary analyzer and extending the life span thereof.

In addition, in the present embodiment, the fixing substrate 9 and the fastening substrate 10 may be rectangular bodies made of metal material, and the transverse cross-sectional shapes of the fixing groove 7, the insertion groove 73, the fixing protruding tongue 8 and the insertion portion 82 are also rectangular, so that the regular outline shape is more favorable for assembling the fixing substrate 9 and the fastening substrate 10, and clamping, cutting, observing and analyzing the fiber sample. In order to make the overall thickness of the auxiliary analyzer thinner so as to make the light transmittance of the fiber sample clamped position better, thereby being more favorable for observing the transverse cross-sectional shape of the fiber sample, the thicknesses of the fixed substrate and the fastening substrate can be 0.8 to 1.5 mm. In order to enable the auxiliary analyzer to have a moderate operation area, the transverse cross-sectional shapes of more fibers can be analyzed, so that the fiber raw material proportion of the blended product can be analyzed more accurately, the whole length of the fixed substrate and the fastening substrate after the fixed substrate and the fastening substrate are inserted and combined can be 6cm, and the whole width can be 3 cm. In addition, in order to fix and clamp fibers with various diameters and fiber samples with different numbers for subsequent cutting, observation and analysis, the widths of the fixing groove and the fixing convex tongue can be 0.5-1.5 mm, and the distance between the end face of the first clamping tooth part and the end face of the second clamping tooth part can be set to be 0.5-2 mm. According to the practical experimental application effect, the most optimized structure of the auxiliary analyzer is as follows: the thickness of the fixing substrate and the thickness of the fastening substrate are set to be 1mm, the width of the fixing groove and the fixing convex tongue are set to be 1.2mm, and the distance between the end face of the first clamping tooth part and the end face of the second clamping tooth part is set to be 1.5 mm.

To sum up, when the auxiliary analyzer is used to analyze a fiber sample, it is not necessary to use reagents such as collodion solution, and to cut the fiber sample into a very thin section of a transverse cross section of the fiber, but only to longitudinally clamp the fiber sample between the first and second teeth of the fixed and fastening substrates, and then to remove the portion of the fiber sample exposed outside the auxiliary analyzer by cutting, the auxiliary analyzer with the cut fiber sample clamped therein can be placed on the stage of a microscope or a scanning electron microscope to perform differential analysis on the transverse cross section of the fiber sample, and the fiber sample clamped by the first and second teeth can always maintain an upright state without deformation of the transverse cross section, which is beneficial to the observation and identification of the transverse cross section, as shown in fig. 6 and 7, for the purpose of using the auxiliary analyzer to perform observation and measurement of the manufactured viscose fiber sample and the polyester fiber sample under observation equipment, wherein L1, L2 and L3 are the diameters of the observed fibers, and as can be seen in the figure, the fibers in the two fiber samples have no phenomenon of reverse inclination, and the outline of the transverse section is clearly seen. In addition, the transverse section of the fiber is rapidly cut by the auxiliary analyzer, and the observation of the transverse section of the fiber under a microscope or a scanning electron microscope is not influenced under the condition that the transverse section is thicker than the thickness of the fiber cut by the Ha-type slicer. Therefore, the auxiliary analyzer is used for carrying out auxiliary analysis on the fiber sample, the operation is simple, multiple sampling is convenient, the fiber sample cannot be displaced and not inclined when being cut off, and the transverse section of the fiber can be ensured to be vertical to the longitudinal direction of the fiber, so that the sampling time of the transverse section of the fiber is greatly shortened, and the analysis efficiency and the accuracy of the transverse section of the fiber are improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalent changes made by applying the patent concepts of the present invention should fall within the scope of the present invention.

Claims

1. A fiber transverse cross-section assisted analyzer, comprising: a fixed substrate and a fastening substrate; one side of the fixed substrate is concavely provided with a fixed groove which vertically penetrates through the upper side surface and the lower side surface of the fixed substrate in an extending manner towards the middle part of the fixed substrate, the end part of the fixed groove positioned in the middle part of the fixed substrate is provided with a first tooth clamping part with tooth peaks and tooth valleys which are mutually staggered from top to bottom and are in a sawtooth shape, the fixed groove is positioned on the side surface to form an open notch, the side surfaces on two sides of the notch are concavely provided with two inserting grooves positioned between the upper side surface and the lower side surface of the fixed substrate towards the middle part of the fixed substrate respectively, and the two inserting grooves are positioned on the side surfaces to form inserting openings respectively; the side surface of the fastening substrate facing the notch corresponds to the fixing groove and the two inserting grooves and is convexly provided with a fixing convex tongue and two inserting parts, and the end part of the fixing convex tongue corresponds to the first clamping tooth part to form a second clamping tooth part; and placing a fiber sample into the end part of the fixing groove with the axial direction thereof parallel to the penetrating direction of the fixing groove, correspondingly inserting the fixing convex tongue and the inserting part into the fixing groove and the inserting groove so as to clamp the fiber sample between the first clamping tooth part and the second clamping tooth part, transversely cutting the fiber sample along the upper side and the lower side of the fixing substrate by a cutting knife, and then placing the fiber transverse section auxiliary analyzer with the cut fiber sample clamped therein at an observation device so as to perform identification analysis on the transverse section of the fiber sample.

2. The fiber transverse section auxiliary analyzer according to claim 1, wherein the end face of the first latch portion and the end face of the second latch portion are each formed by connecting a plane having vertical upper and lower portions and a serrated face having a middle portion formed by mutually staggering a tooth crest and a tooth valley from top to bottom, and the tooth crest and the tooth valley of the first latch portion correspond to the tooth valley and the tooth crest of the second latch portion, respectively.

3. The fiber transverse section auxiliary analyzer according to claim 1, wherein the fixing groove and the two insertion grooves communicate with each other; the two insertion parts are positioned on two sides of the fixed convex tongue and connected with the fixed convex tongue.

4. The fiber transverse cross-section auxiliary analyzer according to claim 1, wherein the fixing substrate and the fastening substrate are rectangular bodies made of metal material; the transverse cross-sectional shapes of the fixing groove, the inserting groove, the fixing convex tongue and the inserting part are all rectangular.

5. The fiber transverse cross-section auxiliary analyzer of claim 4, wherein the thickness of the fixed substrate and the fastening substrate are both 0.8 to 1.5 mm.

6. The fiber transverse cross-section auxiliary analyzer according to claim 5, wherein the fixing substrate and the fastening substrate are inserted and combined to have an overall length of 6cm and an overall width of 3 cm.

7. The fiber transverse cross-section auxiliary analyzer of claim 6, wherein the width of the fixing groove and the fixing tab are both 0.5 to 1.5 mm.

8. The fiber transverse cross-section auxiliary analyzer of claim 7, wherein a distance between an end face of the first latch portion and an end face of the second latch portion is 0.5 to 2 mm.

9. The fiber transverse section auxiliary analyzer of claim 8, wherein the thickness of the fixing substrate and the fastening substrate are both 1mm, the width of the fixing groove and the fixing tongue are both 1.2mm, and the distance between the end face of the first latch part and the end face of the second latch part is 1.5 mm.

10. The auxiliary analyzer of claim 1, wherein the observation device is a microscope or a scanning electron microscope, and the auxiliary analyzer of the transverse cross section of the fiber with the cut fiber sample is placed on a stage of the microscope or the scanning electron microscope.