ライフサイエンスコーパス: semiconducting

1 The P = 1 atm structures are all semiconducting.

2 FeO3 (x = 0.725) (BT-BFO) film integrated on semiconducting (100) Nb (0.7%) doped SrTiO3 (Nb:STO) sub

3 ort on the fabrication and properties of the semiconducting 2D (CH3(CH2)3NH3)2(CH3NH3)(n-1)Pb(n)I(3n+

4 stance between the consecutive layers of the semiconducting 2D material and dynamically reduces its b

5 For electronic applications, semiconducting 2D materials benefit from sizable mobilit

6 Even in their single layer form, semiconducting 2D materials have demonstrated efficient

7 state-of-the-art in photodetectors based on semiconducting 2D materials, focusing on the transition

8 Semiconducting 2D materials, like transition metal dicha

9 aspects of graphene and the new families of semiconducting 2D materials, like transition metal dicha

10 he process transforms them from the pristine semiconducting 2H phase to a distorted metallic phase.

11 However, metals deposited on the semiconducting 2H phase usually form high-resistance (0.

12 bands that overlap near the Fermi level, but semiconducting 2H-MoTe2 is more stable and therefore mor

13 ring properties that are very different from semiconducting 2H-WS2 .

14 c properties of purified, solution-processed semiconducting (6,5) single-walled carbon nanotubes (SWC

15 Such semiconducting Ag clusters are extremely stable and reta

16 We report on the synthesis of semiconducting AgFeS2 nanowires, obtained from the conve

17 The knowledge of diffusion processes in semiconducting alloys is very important both technologic

18 ilm exhibit metallic along [100], but remain semiconducting along [010] under application of a magnet

19 activated electronic transport properties of semiconducting and insulating perovskite oxides.

20 essure range of 28.2-61.7 GPa, where a mixed semiconducting and metallic feature is observed due to t

21 sively explain why tetragonal FeS shows both semiconducting and metallic responses in contrast to tet

22 s demonstrated to enable isolation of single semiconducting and metallic single-wall carbon nanotube

23 ised considerable interest due to its unique semiconducting and opto-electronic properties.

24 e show that it renders the metallic 1T phase semiconducting, and gives it strong and tunable photolum

25 is of metallic, ferroelectric, upconversion, semiconducting, and thermoelectric 1D nanocrystals, amon

26 p III dopant atoms into bottom-up fabricated semiconducting armchair GNRs (AGNRs).

27 tronic properties of MOFs from insulating to semiconducting, as well as provide a blueprint for the d

28 All contain AuH2(-) molecular units and are semiconducting at P = 1 atm, and some form metallic and

29 Securing a semiconducting bandgap is essential for applying graphen

30 ngle crystal transport measurements indicate semiconducting behavior for the anionic radical Ni compl

31 This material shows emergent semiconducting behavior with significantly higher conduc

32 ction and has useful properties that include semiconducting behavior, catalytic reactivity, and aqueo

33 ases with decreasing temperature, suggesting semiconducting behavior.

34 te excellent air stability and high-mobility semiconducting behaviour.

35 (benzylammonium)2PbCl4 is ferroelectric with semiconducting behaviours.

36 2 to a mixture of superconducting Bi2212 and semiconducting Bi2Sr2CuO6+delta (Bi2201) during the shoc

37 A ternary organic semiconducting blend composed of a small-molecule, a con

38 hermally-activated carrier absorption in the semiconducting bulk states.

39 e prepared, from solution, on top of aligned semiconducting C60 single crystals, using an orthogonal

40 Metallic silver and semiconducting cadmium selenide nanocrystals are deposit

41 esistance end-bonded contacts, a high-purity semiconducting carbon nanotube source, and self-assembly

42 Built on one semiconducting carbon nanotube, it occupies less than ha

43 The combination of the short channel and semiconducting carbon nanotubes (CNT) allows for an exce

44 Thin film networks of highly purified semiconducting carbon nanotubes (CNTs) are being explore

45 The quasiparticle band gaps of semiconducting carbon nanotubes (CNTs) supported on a we

46 e measurements on individual polymer wrapped semiconducting carbon nanotubes.

47 We demonstrate this in quasi-one-dimensional semiconducting carbon nanotubes.

48 valence and conduction band energy levels of semiconducting carbon nanotubes; (ii) provide a direct m

49 Controlling the charge transfer between a semiconducting catalyst carrier and the supported transi

50 odetector efficiency by uniformly decorating semiconducting CdSe quantum dots on Si channel (Si-QD).

51 etallic bilayer serves as electrodes for the semiconducting channel monolayer, avoiding contact resis

52 Our atomically thin and layered semiconducting-channel tunnel-FET (ATLAS-TFET) is the on

53 erve a 25% reduction in the transport gap of semiconducting CNTs, and a 32% reduction in the band gap

54 This work is relevant to the integration of semiconducting, conducting, and insulating nanomaterials

55 nt functional shell, Tube(wedge)2 allows the semiconducting conduction pathway to be modulated solely

56 ge rearrangement with the adjacent metal and semiconducting contacts.

57 ectivity from atomically thin conducting and semiconducting crystals enables us to exploit these hete

58 ased on a deeply depleted graphene-insulator-semiconducting (D(2)GIS) junction, which offers the poss

59 ve the way for the fabrication of spin-based semiconducting devices.

60 selective transformation of the cylindrical semiconducting domain into discrete spheres while keepin

61 Aligned films of a semiconducting DPP-based copolymer exhibit highly anisot

62 Dielectric, semiconducting, electrically conducting, and ionically c

63 Combining the semiconducting energy gap, the 100% spin polarized valen

64 to conductive behaviour at charged walls in semiconducting ErMnO3.

65 s a material with combined ferroelectric and semiconducting features could be a promising solution fo

66 A sol-gel method for the synthesis of semiconducting FeCrAl oxide photocathodes for solar-driv

67 rons and holes, a possibility if MAPbI3 is a semiconducting ferroelectric, which, however, requires c

68 Applying uniaxial tensile strains to the semiconducting few-layer 2H-MoS2 crystals in the nanocom

69 As a result, our fabricated semiconducting film can be stretched up to 100% strain w

70 Here, we use the anisotropic semiconducting framework Cd2(TTFTB) (TTFTB(4-) = tetrath

71 mbedded within the three-dimensional Bi-rich semiconducting framework.

72 al, however, it is necessary to separate the semiconducting from the metallic SWNTs present in the as

73 al structure, and document a decrease of the semiconducting gap that is directly linked to its nonpla

74 attention; however, due to the absence of a semiconducting gap, the realization of graphene-based de

75 with quasiparticles injection across a rigid semiconducting gap.

76 trate, we produce large area two-dimensional semiconducting GaS of unit cell thickness ( approximatel

77 nternal non-contacting continuous domains; a semiconducting glass between two conductors.

78 ithography to fabricate uniform, chip-scale, semiconducting graphene nanomesh (GNM) with sub-10 nm ne

79 ay for potential applications in spintronics.Semiconducting graphene nanoribbon provides a platform f

80 Unlike graphene, semiconducting graphene nanoribbons do not have free ele

81 s to be an ordered composite of uniform-size semiconducting graphene quantum dots laterally integrate

82 of cost-effective development of large-scale semiconducting graphene sheets and devices.

83 The energy band gaps of 2D semiconducting Group 15 monolayers cover a wide range fr

84 nd alignment of vertically stacked WS2 /MoS2 semiconducting heterobilayers and finite density of stat

85 lithographically patterned arrays of lateral semiconducting heterojunctions within a single two-dimen

86 nsively to control the lifetime of atoms and semiconducting heterostructures coupled to microwave or

87 ot perturb the ordered microstructure of the semiconducting host.

88 his effect may be explained by deposition of semiconducting iron oxide particles within LSLs.

89 n transistor comprises a small conducting or semiconducting island separated from two metallic reserv

90 Analogous to a depleted metal-oxide-semiconducting junction, photo-generated charge collects

91 By using SWCNTs as the semiconducting layer and poly(ethylene terephthalate) (P

92 Therefore, semiconducting layered 2D materials are strong candidate

93 Here we implemented active semiconducting layers into the microcavity to obtain a v

94 perconductor, a ferromagnetic insulator, and semiconducting layers with intrinsic spin-orbit coupling

95 en photonic and electronic performance of 2D semiconducting layers, and demonstrates that they are no

96 is argued that in the observed high-pressure semiconducting Li phase (oC40, Aba2), an example of such

97 Another two-dimensional semiconducting material molybdenum disulfide (MoS2) is a

98 a crucial feature for two-dimensional (2-D) semiconducting material-based image sensor applications.

99 ing interactions, which render this series a semiconducting material.

100 ine the best features of metals or inorganic semiconducting materials (excellent electrical and optic

101 s based on a wide range of different organic semiconducting materials and incorporating reduced POM/A

102 The optical and electronic properties of semiconducting materials are of great importance to a va

103 block in the syntheses of efficient organic semiconducting materials during the past decade.

104 rid) perovskites have emerged as competitive semiconducting materials for photovoltaic devices due to

105 Recently, two-dimensional semiconducting materials have emerged as promising candi

106 ely modulate the charge carrier transport in semiconducting materials is extremely challenging for th

107 Two-dimensional semiconducting materials of the transition-metal-dichalc

108 Despite numerous organic semiconducting materials synthesized for organic photovo

109 e three-atom-thick monolayers, provide ideal semiconducting materials with high electrical carrier mo

110 stors demonstrating that SBT can enable good semiconducting materials with hole mobilities ranging fr

111 ore the unique properties of two-dimensional semiconducting materials with low crystal symmetry for f

112 onal conducting nanowires in two-dimensional semiconducting materials with nanometre precision is pos

113 However, air-stable ultrathin semiconducting materials with superior performances rema

114 ning systems Ge4R4 (potential precursors for semiconducting materials) are predicted.

115 ion demonstrate their promising potential as semiconducting materials, exhibiting high current on/off

116 enide takes advantage of the high quality of semiconducting materials, reliability in fabricating arr

117 particularly problematic for lone-pair-rich, semiconducting materials, such as phase-change materials

118 g unit for the construction of pi-conjugated semiconducting materials.

119 the highest among all known two-dimensional semiconducting materials.

120 length are important physical parameters for semiconducting materials.

121 cenes comprise an important class of organic semiconducting materials.

122 While the chemical composition of semiconducting metal halide perovskites can be precisely

123 Bio-functionalized nanoparticles with semiconducting/metallic core encapsulated in a bio- or b

124 around a decade ago, that combines arrays of semiconducting microwires with flexible polymeric membra

125 sulfurization process that directly converts semiconducting molten stibnite (Sb2S3) into pure (99.9%)

126 sis of heterostructures made of single-layer semiconducting molybdenum disulfide contacting conductiv

127 Semi-metallic graphene and semiconducting monolayer transition-metal dichalcogenide

128 The optical response of semiconducting monolayer transition-metal dichalcogenide

129 sulating hexagonal boron nitride and various semiconducting monolayers into complex but carefully des

130 erostructure of atomically thin graphene and semiconducting MoS2.

131 The semiconducting nanocrystals described here offer a cheap

132 res; and energy-transfer in assemblies of 0D semiconducting nanocrystals.

133 rolling the shape and crystallography of any semiconducting nanomaterial is a key step towards extend

134 d digital electronics using ZnO and/or other semiconducting nanomaterial.

135 from a broad spectrum of materials spanning semiconducting nanomaterials to organic molecular dyes,

136 nt experiments and calculations suggest that semiconducting nanoparticles could act as efficient volt

137 m-confined Stark effect in membrane-embedded semiconducting nanoparticles, examines their possible ut

138 ion from the dye into the conduction band of semiconducting nanoparticles, such as titanium dioxide a

139 ssfully overcome by using vertically aligned semiconducting nanorods as the 3D photosensing pixels.

140 approach for improving the photoactivity of semiconducting nanostructures for a wide range of reacti

141 Well-ordered and highly interconnected 3D semiconducting nanostructures of bismuth sulphide were p

142 es and the substrate is utilized to assemble semiconducting nanotubes into well-aligned, ultrahigh-de

143 f a single nanotube in a network of purified semiconducting nanotubes.

144 sers rely on solid gain materials (inorganic semiconducting nanowire or organic dye in a solid matrix

145 m trans-configuration and self-assemble into semiconducting nanowires.

146 ducting transition metal dichalcogenides; 1D semiconducting nanowires; and energy-transfer in assembl

147 cal factor, we have designed a series of new semiconducting naphthalene diimide (NDI)-selenophene/per

148 asurements on nanowire ensembles confirm the semiconducting nature of AgFeS2, with a direct band gap

149 infrared absorption studies demonstrate the semiconducting nature of b-AsP with tunable band gaps, r

150 We demonstrate that the semiconducting nature of our AFM electrode allows us to

151 a temperature dependence consistent with the semiconducting nature of the TI film and freeze-out of b

152 The semiconducting nature of ZnO provides charges to partial

153 tion is stable and preserves the monolayer's semiconducting nature, along with other attractive chara

154 P-type semiconducting NiO thin film was deposited by RF sputter

155 This is often accompanied by semiconducting or insulating behavior.

156 nic/molecular conductivity in conducting and semiconducting organic polymers and small molecules, the

157 to produce uniform and intimately contacted semiconducting organic-inorganic nanocomposites for pote

158 surface ozone monitoring using gas-sensitive semiconducting oxide (GSS) technology, solar power, and

159 charge injection from the Mo2 center to the semiconducting oxide particle.

160 oach to passivate the surface of a versatile semiconducting oxide, zinc oxide (ZnO), evoking a self-a

161 an underlying support, such as a metal or a semiconducting oxide.

162 of multishell nanotubes combining different semiconducting oxides and metal nanoparticles is as well

163 to surface passivation will allow the use of semiconducting oxides in a variety of different electron

164 allic MoS2 showing high responsivity and the semiconducting phase exhibiting high on/off ratios.

165 norganic hybrid perovskites with metallic or semiconducting phases of 2D MoS2 nanosheets via solution

166 rs on a variety of technologically important semiconducting photoanodes, including textured crystalli

167 Semiconducting photocatalytic solar-hydrogen conversion

168 l of these self-passivating, high-efficiency semiconducting photoelectrodes for >100 h of sustained,

169 However, the semiconducting photoelectrodes used in these cells typic

170 echnologically advanced systems are based on semiconducting photoelectrodes.

171 ation and mechanochemical unzipping to yield semiconducting polyacetylene-based block copolymers.

172 We herein report an all-in-one fluorescent semiconducting polymer based far-red to near-infrared (N

173 Melt-processing of complementary semiconducting polymer blends provides an average charge

174 In these conditions, the semiconducting polymer chains are inhibited from attaini

175 Semiconducting polymer dots (P-dots) recently have emerg

176 we show the concept of using photoswitchable semiconducting polymer dots (Pdots) as an optical 'paint

177 Recently, semiconducting polymer dots (Pdots) have become a novel

178 Semiconducting polymer dots (Pdots) have recently been p

179 he design and synthesis of quinoxaline-based semiconducting polymer dots (Pdots) that exhibit near-in

180 he design and development of squaraine-based semiconducting polymer dots (Pdots) that show large Stok

181 we report a probe of lanthanide-coordinated semiconducting polymer dots (Pdots), which possess fluor

182 s (hydrogels), hydrophobic organic polymers, semiconducting polymer dots, quantum dots, carbon dots,

183 thiophene)} [P(NDI2OD-T2)], a widely studied semiconducting polymer exhibiting high electron mobility

184 ate; and (iv) demonstrate that modulation of semiconducting polymer frontier orbital energy levels ca

185 This new semiconducting polymer is designed specifically to facil

186 delivery of two nanocarriers, a fluorescent semiconducting polymer model drug nanoparticle as well a

187 Here we present semiconducting polymer nanoparticles (SPNs) <40 nm in di

188 Semiconducting polymer nanoparticles (SPNs) emerge as at

189 Furthermore, the semiconducting polymer nanoparticles possess high struct

190 Diketopyrrolopyrrole-based semiconducting polymer nanoparticles with high photostab

191 cles (NPs) (including dye-doped polymer NPs, semiconducting polymer NPs, small-molecule organic NPs,

192 nravel molecular order in thin layers of the semiconducting polymer poly[N,N'-bis(2-octyldodecyl)-1,4

193 Thienoisoindigo-based semiconducting polymer with a strong near-infrared absor

194 ment encoded in the spectral response of the semiconducting polymer, and correlate chain packing with

195 uction of absorption and emission in p3ht, a semiconducting polymer, and found that the rate of photo

196 It has been demonstrated that LBG semiconducting polymers based on electron-donor units co

197 Here, we show that semiconducting polymers can be confined into weakly orde

198 We show that micelle-forming cationic semiconducting polymers can coassemble in water with cat

199 Here, we present a series of semiconducting polymers designed to elucidate important

200 e of totally disintegrable and biocompatible semiconducting polymers for thin-film transistors.

201 Solution processable semiconducting polymers have been under intense investig

202 otential applications of these disintegrable semiconducting polymers in low-cost, biocompatible, and

203 The charge-carrier mobility of organic semiconducting polymers is known to be enhanced when the

204 , further advancing the hole mobility of LBG semiconducting polymers is of equal importance as broade

205 High-mobility semiconducting polymers offer the opportunity to develop

206 Semiconducting polymers owe their optoelectronic propert

207 behaviors are also observed in other common semiconducting polymers such as poly(3-hexyl thiophene)

208 because high mobility has been reported for semiconducting polymers that exhibit a surprisingly low

209 e effective design rules for approaching LBG semiconducting polymers with high molar absorptivity, su

210 we present a design concept for stretchable semiconducting polymers, which involves introducing chem

211 severely limited by the hole mobility of LBG semiconducting polymers, which is significantly lower th

212 bility control is a patterning technique for semiconducting polymers, which utilizes the reduction in

213 perties that supersede those of conventional semiconducting polymers.

214 s an attractive strategy to high performance semiconducting polymers.

215 The interplay between semiconducting properties and ferroelectricity in this t

216 Currently, semiconducting properties and the corresponding applicat

217 ation and the controllable recovery of their semiconducting properties directly in solution.

218 lectrification, electrostatic induction, and semiconducting properties for area-scalable conversion o

219 technologically useful manner.Integration of semiconducting properties into the basic topological mot

220 rmining the surface electronic structure and semiconducting properties of hybrid perovskites.

221 agrams may be used for imposition of desired semiconducting properties that are needed to maximize th

222 n opportunity to integrate ferromagnetic and semiconducting properties through the Rasbha effect for

223 Recovery of the semiconducting properties typically involves heating of

224 lms of the macrocycle show that they exhibit semiconducting properties with a redox-conductivity of u

225 However, the routine integration of semiconducting properties, particularly long-range elect

226 talline morphology formation for spin-coated semiconducting PTB7 (poly[[4,8-bis[(2-ethylhexyl)oxy]ben

227 in texture in monolayer, centrosymmetric and semiconducting PtSe2 film without the characteristic spi

228 ultrathin body, but problems such as limited semiconducting purity and non-ideal assembly still need

229 mbled carbon nanotube arrays with over 99.9% semiconducting purity, and the complementary feature was

230 homoatomic polymer chain, which is part of a semiconducting pyrroloperylene-iodine complex.

231 Luminescent semiconducting quantum dots (QDs) are central to emergin

232 ging light-harvesting nanomaterials, such as semiconducting quantum dots (QDs), metal nanoparticles,

233 hyperbolic metasurfaces, wherein distributed semiconducting quantum wells display extreme absorption

234 n intensity enhancement relative to the bare semiconducting quantum wells.

235 However, robust implementations of semiconducting qubits must overcome the effects of charg

236 (thus well-stabilized), small-diameter, and semiconducting-rich CNTs have higher-measured excited tr

237 e, which contain both metallic (m-SWCNT) and semiconducting (s-SWCNT) species.

238 is lattice-type defect patterns, identifying semiconducting/semimetallic configurations.

239 a wire-like material that can also integrate semiconducting sequences into the framework of DNA mater

240 straightforward method by which to integrate semiconducting sequences, site-specifically, into the fr

241 ted on native silicon dioxide layer grown on semiconducting single crystal silicon wafer.

242 ns into an electric signal) based on organic semiconducting single crystals that possess enhanced sen

243 was developed and used to uniformly deposit semiconducting single-wall carbon nanotube (SWCNT)-based

244 and ridge waveguides based on large-diameter semiconducting single-wall carbon nanotubes (s-SWCNTs) d

245 that enable low voltage operation of p-type semiconducting single-walled carbon nanotube and n-type

246 larly tunable fluorescent quantum defects in semiconducting single-walled carbon nanotube hosts throu

247 Composed of a semiconducting single-walled carbon nanotube nested in a

248 in the molarity of any structurally enriched semiconducting single-walled carbon nanotube preparation

249 High purity semiconducting single-walled carbon nanotubes (s-SWCNTs)

250 High-purity semiconducting single-walled carbon nanotubes (s-SWNTs)

251 Chirality-selective functionalization of semiconducting single-walled carbon nanotubes (SWCNTs) h

252 Highly pure semiconducting single-walled carbon nanotubes (SWNTs), s

253 Semiconducting single-walled carbon nanotubes are one-di

254 e show that optical excitation of individual semiconducting single-walled carbon nanotubes triggers s

255 Herein, semiconducting single-walled carbon nanotubes with large

256 Semiconducting, single-walled carbon nanotubes (SWNTs) a

257 ty organic single crystals, based on various semiconducting small molecules on virtually any substrat

258 y and at low temperature, from rhombohedral, semiconducting SrCrO(2.8) to cubic, metallic perovskite

259 g conversion to the thermodynamically stable semiconducting state (2H) when mildly annealed in a nitr

260 Full device relaxation back to a semiconducting state is accomplished by annealing in vac

261 netic field of 9 T) discovered in degenerate semiconducting strontium titanite (SrTiO3) single crysta

262 ngs demonstrate that decoupling magnetic and semiconducting sublattices allows access to high-Tc n- a

263 trongly coupled and interacting magnetic and semiconducting sublattices.

264 ith this precision directly on insulating or semiconducting substrates has not been possible.

265 hene can act as a probe to detect defects in semiconducting surfaces.

266 r, advances in the enrichment of high-purity semiconducting SWCNTs have enabled recent circuit demons

267 that the method can detect both metallic and semiconducting SWNTs in lysates of cells that had intern

268 However, many applications require semiconducting SWNTs in their pure form.

269 Semiconducting SWNTs were imaged during dielectrophoreti

270 us polymers are able to selectively disperse semiconducting SWNTs, the subsequent removal of the poly

271 gent, enabling isolation of dispersant-free, semiconducting SWNTs.

272 ecular polymer that can selectively disperse semiconducting SWNTs.

273 graphene transferred onto polystyrene (PS), semiconducting thienoazacoronene (EH-TAC), gold, and als

274 The large-scale growth of semiconducting thin films forms the basis of modern elec

275 f poly(p-phenylene) chains on the surface of semiconducting TiO2(110) via a dehalogenative homocoupli

276 Semiconducting TMD monolayers such as MoS2, MoSe2, WSe2

277 inarily large exciton binding energy in a 2D semiconducting TMD.

278 n switch continuously from a low-conductance semiconducting to a high-conductance metallic state.

279 sistivity studies reveal a transition from a semiconducting to a metallic phase with decreasing tempe

280 pant arrangement can convert graphene from a semiconducting to a semimetallic state.

281 able direct photo-conversion from conducting/semiconducting to insulating state through molecular dis

282 remarkable electronic properties of layered semiconducting transition metal dichalcogenides (TMDs) m

283 Although the main Raman features of semiconducting transition metal dichalcogenides are well

284 Semiconducting transition metal dichalcogenides consist

285 gh-performance piezoelectricity in monolayer semiconducting transition metal dichalcogenides is highl

286 rt in nanoscale optical characterization: 2D semiconducting transition metal dichalcogenides; 1D semi

287 the majority of related research focuses on semiconducting transition-metal dichalcogenides (for exa

288 Two-dimensional (2D) layered semiconducting transition-metal dichalcogenides (TMDCs)

289 espect, two-dimensional gapless graphene and semiconducting transition-metal dichalcogenides have eme

290 titution doping for chemical-vapor-deposited semiconducting transition-metal-dichalcogenide monolayer

291 erties, yet its lack of optical activity and semiconducting transport hamper application in optoelect

292 10 at.%) and Dy (24 at.%) can show excellent semiconducting transport properties.

293 ace between monolayer graphene and few-layer semiconducting tungsten disulphide.

294 Semiconducting two-dimensional crystals are currently re

295 Semiconducting two-dimensional transition metal dichalco

296 For semiconducting two-dimensional transition-metal dichalco

297 High-mobility semiconducting ultrathin films form the basis of modern

298 Films with R = 0.6 were semiconducting with visible light transmission due to a

299 These results revealed that semiconducting WS2 thin film works as a metallic conduct

300 This is achieved by introducing semiconducting ZnO particles into the relaxor ferroelect